|Publication number||US5659300 A|
|Application number||US 08/707,945|
|Publication date||19 Aug 1997|
|Filing date||10 Sep 1996|
|Priority date||30 Jan 1995|
|Publication number||08707945, 707945, US 5659300 A, US 5659300A, US-A-5659300, US5659300 A, US5659300A|
|Inventors||Donn R. Dresselhuys, Kimbel Nap, Lance A. Ehrke|
|Original Assignee||Innovatec Corporation|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (21), Referenced by (184), Classifications (16), Legal Events (13)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present application is a continuation application of U.S. patent application, Ser. No. 08/380,803, filed Jan. 30, 1995, and now abandoned.
This invention relates generally to flow meters and, more particularly, to indicating meters such as used by utilities and municipalities to meter consumption of natural gas, water and electricity.
Commodities such as natural gas, water and electricity are routinely delivered to commercial and industrial establishments and residences by piping networks or electrical lines (as the case may be) operated by utility companies and municipalities. For billing purposes, such commodities are "metered" at the point of consumption. That is, the network line or "lateral" extending to the establishment or the residence includes a meter indicating how much of the commodity has been consumed in a period of time and the commodity customer is billed accordingly.
It has been estimated that there are about 600 million utility meters installed worldwide. It has also been estimated that there are about 270 million utility meters in the United States and that about 150-160 million of those meters are used for gas and water. Only a very small percentage of utility meters are configured to be read remotely.
In fact, most such meters are read visually by a person walking on site to actually view and manually record the information displayed on the meter dial. There are a number of disadvantages to this form of meter reading. One is that it is enormously labor-intensive. The overhead costs to a utility or municipality for "walk-by" meter reading are very substantial.
Another disadvantage of such form of meter reading is that the person reading meters is subjected to various forms of hazard, e.g., deep snow, barking (and perhaps biting) dogs and the like. And it is not unheard of that a consumer intentionally keeps a ferocious dog in the hope of preventing the meter from being read.
Still another disadvantage is that property owners, especially residential owners, prefer that mater readers not walk on the property. Sometimes, there is a risk that however careful, the meter reader will trample flowers or ornamental shrubs.
In recognition of the disadvantages of walk-by meter reading, meters have been developed which can be read remotely. Such meters are configured as transponders and include a radio transmitter. When the meter is "interrogated" by a radio signal from a remote location, the meter responds by transmitting a signal encoded with the meter reading.
But such meters also have a disadvantage. They are battery-powered and when the battery charge is depleted, such batteries must be replaced. Of course, replacement is very time-consuming and significantly negates the otherwise-very-attractive advantages of remote meter reading.
Yet another disadvantage of known battery-powered meters is that they continue to use "analog" readout devices such as mechanically-driven rotating dials. The non-rechargeable batteries are used only for the transmitting function.
Still another disadvantage of some known battery-powered meters is that the transmitting equipment is in a housing separate from that containing the meter per se. An electrical cable or wiring extends between the housings and its very existence and exposure to view makes such meter subject to tampering by, e.g., cutting the cable.
(As used herein, the term "non-rechargeable" means a battery which cannot be re-charged except by removing it from the meter and replacing it with another battery. That is, a non-rechargeable battery cannot be recharged by a source of electricity integral to the meter itself.)
Another disadvantage of transponding-type meters in certain geographical areas is that the meter is mounted below-ground in a pit. The pit sometimes fills with water, immersing the meter. And the need for an electrical lead passing through the meter housing makes it much more difficult to seal such housing against the entry of water.
A new meter which addresses and resolves disadvantages of the prior art and, in particular, which eliminates the need for "hard wiring" between the meter and transmitter would be a major improvement in the art. Similarly, a new meter which extends battery life would be an important technological advance.
It is an object of the invention to provide an improved meter overcoming some of the problems and shortcomings of the prior art.
Another object of the invention is to provide an improved meter capable of being interrogated by electro-magnetic radiation.
Yet another object of the invention is to provide an improved meter which can be remotely "interrogated" for transmitting signals and which eliminates the need for a hard-wire connection between the meter and a signal-radiating device.
Another object of the invention is to provide an improved meter which can be installed in a pit and readily sealed against the entry of water, even when the meter is immersed in water.
Another object of the invention is to provide an improved meter maximizing use of solid state digital technology.
Still another object of the invention is to provide an improved battery-powered meter which significantly extends battery life and thus the operating life of the meter before maintenance is needed.
Another object of the invention is to provide an improved battery-powered meter which substantially eliminates the need to replace the battery when the initial charge is depleted.
Yet another object of the invention is to provide an improved meter which in one embodiment is free of an analog readout device. How these and other objects are accomplished will become more apparent from the following descriptions and from the drawing.
The invention involves a meter for mounting to a conductor having a commodity such as natural gas, water or electricity flowing through it. The meter has an electrically-powered transmitter and includes a rechargeable device, e.g., a nickel-cadmium battery or a capacitor, for storing electricity to power such meter transmitter. There is also a source of electricity for recharging the device. The invention thereby resolves a major drawback of earlier meters in that such invention greatly extends both the life of the power source and the meter service life. To put it another way, the new meter substantially eliminates the need to replace the battery as is the case with prior art meters when the initial battery charge is depleted or is substantially so.
In a highly preferred embodiment, the source includes a charging generator coupled to the device to charge it and having a turbine or similar flow-responsive device driven by the commodity flowing through the conductor. In a specific embodiment configured as a water meter, the flow-responsive device is a turbine in the conductor and having a driving magnet thereon. The meter includes a rotor magnetically coupled to the driving magnet and rotated thereby. In another embodiment used for remote reading of meters, the meter has an antenna for radiating an encoded signal to a remote receiver.
The charging generator has a wire-wound stator stationary in the meter and a rotor driven by the commodity flowing through the conductor. While the rotor could be of the wire-wound type, a preferred rotor is embodied as a permanent magnet or has a permanent magnet attached thereto. The rotor is mounted on a generator shaft and in a meter embodied for metering gas, the turbine (rotated by the flow of the commodity through the conductor) is also mounted on the shaft.
The new meter has extremely low "drag" and for that reason may be used with analog indicator panels. To put it another way, the drag of the new meter is a very small part of the drag imposed by the analog indicator panel itself. However, in another aspect of the invention, the meter has a digital rather than an analog indicator panel. Such digital panel has a plurality of segments used to form numerals of the digital type. Combinations of segments at each location are activated for indicating commodity flow. In a highly preferred embodiment, the segments are of the liquid crystal display (LCD) type since such LCDs use extremely low power.
When the meter is configured for remote meter reading, a highly preferred arrangement, the meter includes a radio transmitter powered by the rechargeable device. The antenna is coupled to the transmitter and when the meter is "interrogated," (triggered by an incoming radio-wave signal to transmit the then-existing meter reading), such meter radiates a signal representing totalized flow of the commodity through the conductor.
And that is not all. The new meter also includes a pulse generator emitting pulses representing flow. Preferably, such pulse generator is of solid state configuration and has a permanent magnet rotating at a rate which represents the rate of flow. A switch is periodically actuated by the magnet during magnet rotation and such switch may be a Hall-effect transistor or a reed switch, for example.
(As used herein, totalized flow may mean the total of flow from the date the meter was installed and "zeroed." In that event, the periodic consumption of the commodity is determined by subtracting the current "reading" of totalized flow from the immediately-preceding reading thereof. If the meter if reset to zero upon interrogation, totalized flow means the total flow from such reset to the time of interrogation.)
In yet another aspect of the invention, the housing is watertight and the transmitter and antenna are confined in such housing. There are no electricity-carrying wires extending between the interior and the exterior of such housing. That is, the exterior of the housing is free of such wires and the meter may therefore be placed in a moist environment. When the meter is "interfaced" with a wireless system such as a cellular telephone (or other type of telephonic system) or with a vehicle carrying a transmitter and receiver, the housing is preferably made of a material, e.g., plastic or the like, which is permeable to electromagnetic radiation (EMR).
Another embodiment of the meter is particularly useful in areas where the meter is mounted in a pit. The meter includes an RF transceiver, a totalizing circuit board, a liquid crystal display and an antenna, all within the meter housing. A signal-radiating device such as a repeater antenna is spaced from the meter antenna and inductively-coupled to it. The meter is thereby free of wiring connecting the antenna and the device and the meter housing may be readily sealed for water exclusion.
More specifically, the signal-radiating device includes a pickup lead extending downwardly from it. Such lead terminates in a signal-coupling loop spaced from and in signal-coupling proximity to the antenna. The exterior of the meter housing is free of wires carrying electricity. In other words, there are no wires passing between the housing interior and exterior.
Therefore, the housing is substantially tamper-proof and readily made watertight for withstanding a moist environment. Such housing is also permeable to EMR so that electromagnetic radiation can pass between the interior transceiver antenna and the exterior repeater antenna.
In another aspect of the invention using the remote signal-radiating device, the conductor carrying the metered commodity has a flow sensor in it or associated with it. Such sensor has an output device providing a flow-related signal, i.e., a signal from which flow can be ascertained. In a specific embodiment, the output device includes one or more magnets attached to and rotating with a sensor turbine.
The meter has a sensing unit in signal-sensing relationship to the output device and the sensing unit has a component for sensing the flow-related signal from the output device. When such output device includes a magnet, the component may be a Hall-effect transistor, for example, to sense changes in the electromagnetic field of the magnet.
A common type of gas meter has a mechanical coupling extending from the gas meter enclosure. In conventional usage, such coupling is used to drive an analog readout dial.
Another embodiment of the new meter is particularly useful for measuring volumetric consumption of a gaseous commodity flowing through the gas meter enclosure. In the invention, the mechanical coupling is equipped with an output device providing a flow-related signal. Where the output device includes a magnet, a component of the meter sensing unit may be a Hall-effect transistor as mentioned above. The availability of the mechanical coupling on a conventional meter and the ease with which the analog readout dial hardware can be removed makes this version of the meter particularly attractive for retrofitting existing conventional gas meters.
Preferably, the transceiver and the totalizing circuit board are solid-state digital devices. Such devices, like the liquid crystal display, use very low power. And with such low power consumption, the new meter operates for extended periods, even without using a rechargeable battery.
Further details of the invention are set forth in the following detailed description and in the drawing.
FIG. 1 is an elevation view in phantom of one embodiment of the new commodity meter shown in conjunction with a fluid conductor. Parts are broken away and surfaces of parts are shown in dashed outline.
FIG. 2 is a representative view of a digital indicator panel of the liquid crystal display (LCD) type.
FIG. 3 is an elevation view of an analog indicator panel. Parts are broken away.
FIG. 4 is a perspective view in phantom of another embodiment of the new commodity meter.
FIG. 5 is a representative view showing how the new meter can be used with telephone or power lines, with an interrogating vehicle and/or with a cellular telephone.
FIG. 6 is a side elevation view, partly in phantom, of another embodiment of the new meter shown in connection with a commodity-carrying conductor. Parts are broken away and surfaces of parts are shown in dashed outline.
FIG. 7 is an exploded view of the meter shown in FIG. 6.
FIG. 8 is a top plan view of the meter shown in FIG. 7 taken along the viewing plane 8--8 thereof.
FIG. 9 is a cross-sectional side elevation view of the meter of FIG. 6 installed in a pit with a cover and a cover-mounted signal-radiating device.
FIG. 10 is a representative side elevation view of yet another embodiment of the new meter shown in conjunction with a conventional gas meter enclosure. Parts are broken away.
FIG. 11 is a phantom side elevation view of the meter shown in FIG. 10.
FIG. 12 is a front elevation view of the meter shown in FIG. 11 taken along the viewing plane 12--12 thereof.
Referring first to FIG. 1, the first embodiment of the new meter 10 is particularly well suited for water metering and has a housing 11 in which meter components are mounted. A turbine 13 is mounted in the pipeline or conductor 15 for rotation when water (or some other commodity) flows through such conductor 15. Such turbine 13 has a driving magnet 17 mounted thereon and such magnet 17 is magnetically-coupled (but not mechanically-coupled) to the rotor 19 described below. The rate of rotation of the turbine 13 is generally proportional to the rate at which the commodity (represented by the arrows 21) flows through the conductor 15.
That part of the meter 10 outside the conductor 15 has an upwardly-extending rotatable shaft 23 on which is mounted the rotor 19 of a pulse generator 25 for measuring volumetric flow. The rotor 27 of an electrical generator 29 comprising a source of battery-charging electricity is also mounted on and rotates with such shaft 23.
The pulse generator 25 emits pulses representing flow and in a highly preferred embodiment, the rotor 19 of such generator 25 is a permanent magnet or has one or two permanent magnets attached thereto. Such generator 25 also has one or two switches 31 actuated each time a magnet passes in close proximity thereto. An exemplary switch 31 is embodied as a magnetically-actuated reed switch or as a Hall-effect transducer.
Considering the electrical generator 29, its rotor 27 may be of the wire-wound type as shown but more preferably (to avoid the use of commutators), such rotor 27 is a permanent magnet rotating with the turbine 13 and the pulse generator rotor 19. The electrical generator 29, also has a wire-wound stator 33 and during rotation of the rotor 27, the stator winding 35 "cuts" lines of magnetic flux, thereby generating electricity.
The meter 10 also has a rechargeable device 37 such as a nickel-cadmium battery or a capacitor for storing electricity to power such meter. The device 37 has appropriate charging circuitry as well as the battery or capacitor per se and the stator wires 39 are coupled to such device 37 for providing charging power.
Referring also to FIG. 2, one embodiment of the meter 10 has a digital indicator panel 41 with a plurality of character locations 43. Each location 43 includes a plurality of segments 45 used to form numerals of the digital type and combinations of segments 45 at each location 43 are activated for indicating commodity flow. The preferred digital indicator panel 41 uses a liquid crystal display (LCD) because of its extremely low power consumption. The indicator panel 41, the rechargeable device 37 and other electrical and logic components used in the meter 10 (including those associated with transponding as described below) are mounted on a printed circuit board 47.
(As used herein, the term "digital indicator panel" means a panel 41 indicating commodity flow by actually forming the outline of a numeral at each of plural locations 43. This is in contrast to an analog indicator panel 49 which indicates flow by using a pointer 51 and printed numerals 53 on a background. And as indicated above, the new meter 10 may also be used with an analog indicator panel 49 as shown in FIG. 3.)
Referring again to FIG. 1, in one specific embodiment used for remote meter 10 reading, the meter has an antenna 55 for radiating an encoded signal to a remote receiver. The antenna 55 is attached to a radio transmitter 57 powered by the rechargeable device 37 and when the meter 10 is "interrogated," (triggered by an incoming radio-wave signal to transmit the then-existing meter reading), such meter 10 radiates a signal representing totalized flow of the commodity, e.g., water, gas or electricity, through the conductor 15.
FIG. 4 shows another embodiment of the new meter 10 which is particularly well suited for metering gas. Such meter 10 has a turbine 13a mounted on the shaft 23a for placement in a flow-receiving relationship to fluid flowing through the conductor 15.
Considering FIG. 5, after appreciating the various features of the new meter 10, it will be apparent that there are a number of ways to obtain consumption-based information from it. One way is by on-site visual inspection of the indicator panel 41 or 49. Another way is to couple the meter output to an electrical power line 59 (if not already coupled to such power line 59) and use power line carrier (PLC) techniques to transmit the interrogation or "wake up" sign and to receive the encoded information from the meter 10.
A telephone line 61 may be used in much the same manner to send digitally-coded interrogation signals and to receive digitally-encoded flow-related information. Still other ways include using a vehicle 63 equipped with an interrogating transmitter 65 and a receiver 67. And in view of the major advances being made in cellular telephonic communications, the meter 10 may interface with a telephone 69 and its communication network.
In warmer climates prevailing in some southern parts of the United States, conventional water meters are often installed in pits. Such pits are often moist and may even flood from time to time. In yet another aspect of the invention for use in such installations, the housing 11 is watertight and the antenna 55 and the transmitter 57 are confined in such housing 11. There are no electricity-carrying wires extending between the interior and the exterior of such housing 11. That is, the transmitter 57 is within the same housing 11 which encloses other meter components and the exterior of the housing 11 is free of such wires. The meter 10 may therefore be placed in a moist environment and even if the housing 11 is not watertight, the fact that there is external cable makes the meter 10 substantially tamper-proof. And when the meter 10 is used with a wireless (EME) system such as a cellular telephone 69 (or other type of telephone-like system) or a vehicle 63 carrying a transmitter 65 and receiver 67, the housing 11 is preferably made of a material, e.g., plastic or the like, which is permeable to EMR.
When the housing 11 is sealed and secured with non-removable fasteners or other means, it is not possible to enter the housing 11 without destroying the meter 10. This feature helps prevent tampering including efforts to bypass the meter 10 to avoid being billed for the commodity used.
Referring next to FIGS. 6, 7, 8 and 9 (and particularly to FIG. 6), another embodiment of the meter 10 is especially useful in areas where, as mentioned above, the meter 10 is mounted in a pit 75 below the ground level 77 of the earth 79. The conductor 15 carrying the metered commodity, e.g., water, has a portion 81 with a flow sensor 83 in it or associated with it. A turbine-type flow sensor 83 is represented but other types of such sensors are contemplated.
Such sensor 83 has an output device 85 providing a flow-related signal, i.e., a signal from which volumetric flow can be ascertained. In a specific embodiment, the output device 85 includes one or more magnets 87 attached to and rotating with a turbine.
The meter 10 has a sensing unit 89 in signal-sensing relationship to the output device 85 and the sensing unit 89 has a component for sensing the flow-related signal from such device 85. When the output device 85 includes a rotating magnet 87, the rate at which the standing electromagnetic field passes through a particular point is indicative of the rate at which the commodity is flowing through the conductor.
Therefore, when the output device 85 includes a rotating magnet 87, the "pickup" component 91 may be a Hall-effect transistor, for example. A Hall-effect transistor switches under the influence of a changing magnetic field and may be used to sense changes in the electromagnetic field of the magnet 87.
Referring particularly to FIG. 7, the meter 10 includes a printed circuit board 93 embodying an RF transceiver powered by a battery 95. A transceiver antenna 97 is connected to the board 93 and radiates RF energy from the transceiver. As described below, such antenna 97 also receives RF energy inductively-coupled thereto from a signal-radiating device 99.
The meter 10 also has a count accumulator (i.e., totalizer) circuit board 101 connected to the board 93 by appropriate wiring 103. A liquid crystal display board 105 is connected to the circuit board 93. As shown in FIG. 8, the display board 105 has a digital indicator or readout 107 of the type illustrated in FIG. 2.
The transceiver board 93, battery 95, antenna 97, and boards 101 and 105 are all supported by and confined in a housing 109 comprising a meter base 111 and a top cover 113 sealing against such base 111. The housing 109 is watertight and at least the cover 113 of such housing 109 is preferably made of a material which is permeable to EMR.
Referring particularly to FIG. 9, the pit 75 has a cover 113 into which is fitted a signal-radiating device 99 such as a repeater antenna. Such device 99 has a radiating portion 115 above the cover 113 so that such cover 113 (which may be metal) does not interfere with electromagnetic radiation from and to the device 99.
More specifically, the signal-radiating device 99 includes a wire-like, electrically-conductive radiation "link" 117 extending downwardly from it. Such link 117 terminates in a signal-coupling loop 119 spaced from and in signal-coupling proximity to the transceiver antenna 97. In other words, the spatial relationship of the antenna 97 and the loop 119 is such that they are inductively-coupled to one another (and only inductively-coupled) rather than being connected by "hard" wiring.
The meter 10 is thereby free of wiring connecting the antenna 97 and the device 99 and the meter housing 109 may be readily sealed for water exclusion. Additionally, the pit cover 113 may be lifted and removed without disconnecting any wiring between the meter 10 and the device 99. Service time is thereby reduced. And the exterior of the meter housing 109 is free of wires carrying electricity. In other words, there are no wires passing between the housing interior and exterior. The housing 109 is substantially tamper-proof and readily made watertight for withstanding a moist environment or even immersion in water.
Referring next to FIGS. 10, 11 and 12, a common type of gas meter 121 has a mechanical coupling 123 extending from the gas meter enclosure 125. In conventional usage, such coupling 123 is used to drive a mechanical analog readout dial.
Another embodiment of the new meter 10 is particularly useful for measuring volumetric consumption of a gaseous commodity flowing through the gas meter enclosure 125. The mechanical coupling 123 is equipped (as manufactured or by retrofit of a conventional gas meter) with an output device 85 providing a flow-related signal. Where the output device 85 includes a magnet 87, a component 91 of the meter sensing unit 89 may be a Hall-effect transistor as mentioned above. The availability of the mechanical coupling 123 on a conventional gas meter 121 and the ease with which the analog readout dial hardware can be removed makes this version of the meter 10 particularly attractive for retrofitting existing conventional gas meters 121.
Particularly in the meter embodiments shown in FIGS. 6-12, the transceiver board 93 and the totalizing circuit board 101 (as well as any other electrical circuitry) are preferably solid-state digital devices. Such devices, like the liquid crystal display 105, use very low power. And with such low power consumption, the new meter 10 operates for extended periods, even without using a rechargeable battery.
In use, the embodiments of the meter 10 shown in FIGS. 9 and 11 may be "interrogated" by a remotely-transmitted signal received by the antenna 97. In the embodiment of FIG. 9, such interrogating signal is first received by the radiating device 99 and is inductively-coupled to the antenna 97 through the link 117.
Thereupon, the transceiver board 93 is "triggered" and its responsive output signal (carrying encoded data from which consumption may be ascertained) is radiated from the antenna 97. In the embodiment of FIG. 9, such responsive output signal is inductively-coupled through the link 117 to the radiating portion 115 and thence to a receiver.
After analyzing the specification and the drawing, it will be appreciated that if the meter 10 is used to measure consumption of electricity, the battery 95 may not be required. And the flow sensor 83 may be other than a rotating turbine 13. Such embodiments are within the scope of the invention.
While the principles of the invention have been shown and described in connection with a few exemplary embodiments, it is to be understood clearly that such embodiments are exemplary and not limiting.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4132981 *||21 Oct 1976||2 Jan 1979||Rockwell International Corporation||Self-powered system for measuring and storing consumption of utility meter|
|US4463354 *||9 Dec 1981||31 Jul 1984||Sears Lawrence M||Apparatus for communicating utility usage related information from a utility usage location to a portable utility usage registering device|
|US4758836 *||20 Jun 1983||19 Jul 1988||Rockwell International Corporation||Inductive coupling system for the bi-directional transmission of digital data|
|US4848164 *||27 May 1988||18 Jul 1989||Graco Inc.||Liquid flow meter|
|US4885943 *||11 May 1988||12 Dec 1989||Hydro-Craft, Inc.||Electronic flowmeter system and method|
|US4908600 *||11 Apr 1988||13 Mar 1990||Cooper Industries, Inc.||Narrow band synchronized radio communication and alarm system|
|US4918995 *||4 Jan 1988||24 Apr 1990||Gas Research Institute||Electronic gas meter|
|US4940976 *||5 Feb 1988||10 Jul 1990||Utilicom Inc.||Automated remote water meter readout system|
|US4953368 *||17 Feb 1988||4 Sep 1990||Nikku Industry Co., Ltd.||Method of and apparatus for heat-treating bobbins of yarn|
|US4953386 *||13 Nov 1989||4 Sep 1990||Gas Research Institute||Method and apparatus for proving electronic gas meters|
|US4965756 *||11 Oct 1988||23 Oct 1990||Gas Research Institute||Method and apparatus for calibration of electronic gas meters|
|US4969365 *||4 Dec 1989||13 Nov 1990||Ljungmans Industrier Ab||Method and apparatus for measuring the volume of a flowing liquid|
|US4998102 *||2 Aug 1988||5 Mar 1991||Distribution Control Systems, Inc.||Integrated meter transponder|
|US5111407 *||21 Aug 1990||5 May 1992||Arad Ltd.||System for measuring and recording a utility consumption|
|US5126934 *||9 Jun 1989||30 Jun 1992||Smart House, L.P.||Gas distribution system|
|US5199307 *||16 Jan 1991||6 Apr 1993||Kimmon Manufacturing Co., Ltd.||Automatic power generation type flowmeter|
|US5251149 *||2 Aug 1991||5 Oct 1993||Great Plains Industries, Inc.||Electronic nutating disc flow meter|
|US5298894 *||17 Jun 1992||29 Mar 1994||Badger Meter, Inc.||Utility meter transponder/antenna assembly for underground installations|
|US5372048 *||8 Feb 1994||13 Dec 1994||Muir Products, Inc.||Floating-type turbine flow meter|
|US5455781 *||31 Aug 1993||3 Oct 1995||Dresser Industries, Inc.||Apparatus and method for determining the measurement accuracy of electronic gas meters|
|JPH01255100A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6084521 *||13 Apr 1998||4 Jul 2000||Pittway Corporation||Waterflow detector with electronic timer|
|US6124806 *||11 Sep 1998||26 Sep 2000||Williams Wireless, Inc.||Wide area remote telemetry|
|US6218995||12 Jun 1998||17 Apr 2001||Itron, Inc.||Telemetry antenna system|
|US6262685||23 Oct 1998||17 Jul 2001||Itron, Inc.||Passive radiator|
|US6275160||22 Mar 2000||14 Aug 2001||Pittway Corporation||Multi-mode waterflow detector with electronic timer|
|US6300881||9 Jun 1999||9 Oct 2001||Motorola, Inc.||Data transfer system and method for communicating utility consumption data over power line carriers|
|US6340932 *||27 Jun 2000||22 Jan 2002||Rf Code, Inc.||Carrier with antenna for radio frequency identification|
|US6366217||16 Aug 1999||2 Apr 2002||Internet Telemetry Corp.||Wide area remote telemetry|
|US6369769||23 Feb 2001||9 Apr 2002||Innovatec Communications, Llc||Flush mounted pit lid antenna|
|US6389909 *||13 Mar 2000||21 May 2002||Dwight N. Johnson||Flowmeter mounted with U-shaped bracket and clamping device|
|US6414605 *||2 Sep 1998||2 Jul 2002||Schlumberger Resource Management Services, Inc.||Utility meter pit lid mounted antenna assembly and method|
|US6612188 *||3 Jan 2001||2 Sep 2003||Neptune Technology Group Inc.||Self-powered fluid meter|
|US6617976||19 Nov 2001||9 Sep 2003||Neptune Technology Group, Inc.||Utility meter pit lid mounted antenna antenna assembly and method|
|US6628741 *||20 Nov 2001||30 Sep 2003||Netzer Precision Motion Sensors Ltd.||Non-volatile passive revolution counter with reed magnetic sensor|
|US6650249||13 Jul 2001||18 Nov 2003||Elster Electricity, Llc||Wireless area network communications module for utility meters|
|US6684245||13 Mar 2000||27 Jan 2004||Elster Electricity, Llc||Automatic meter reading system employing common broadcast command channel|
|US6700902||19 Oct 1998||2 Mar 2004||Elster Electricity, Llc||Method and system for improving wireless data packet delivery|
|US6819292||6 Mar 2002||16 Nov 2004||Arad Measuring Technologies Ltd||Meter register|
|US6954144||30 May 2003||11 Oct 2005||Amco Automated Systems, Inc.||Water pit transmitter assembly|
|US6954178||22 Sep 2003||11 Oct 2005||Arad Measuring Technologies, Ltd.||Meter register|
|US6997064 *||9 May 2003||14 Feb 2006||Anton Bird||Fluid metering and control device|
|US7061398||31 May 2002||13 Jun 2006||Bs&B Safety Systems Limited||Two-way wide area telemetry|
|US7084783||13 Aug 2002||1 Aug 2006||Elster Electricity, Llc||Electronic meter with enhanced thermally managed communications systems and methods|
|US7126551||27 Sep 2004||24 Oct 2006||Arad Measuring Technologies Ltd||Meter register|
|US7221286 *||8 Apr 2005||22 May 2007||M&Fc Holding, Llc||Inductive communications port for an automatic meter reading communication device|
|US7267014||15 Sep 2005||11 Sep 2007||Arad Measuring Technologies Ltd.||Meter register having an encoder|
|US7343795||10 Oct 2006||18 Mar 2008||Arad Measuring Technologies Ltd||Meter register and meter register tampering detector|
|US7412882 *||14 Feb 2006||19 Aug 2008||Badger Meter, Inc.||Meter with integral register having no visual display of consumption|
|US7446672||24 Mar 2005||4 Nov 2008||M&Fc Holding, Llc||Method and apparatus for coupling a meter register to an automatic meter reading communication device|
|US7453373||28 Oct 2005||18 Nov 2008||Itron, Inc.||Integrated meter module and utility metering system|
|US7508318 *||7 Apr 2006||24 Mar 2009||H20Flo, Llc||Apparatus, system and method for monitoring, recording and billing for individual fixture and unit water usage in a multi-unit structure|
|US7554460||25 Sep 2006||30 Jun 2009||Jeff Verkleeren||Utility meter antenna for ground mounted meter boxes|
|US7605485||20 Oct 2009||Fairfax County Water Authority||Systems and methods for generating power through the flow of water|
|US7633378||15 Dec 2005||15 Dec 2009||Rf Code, Inc.||Object identification system with adaptive transceivers and methods of operation|
|US7635972 *||26 Sep 2005||22 Dec 2009||Paul Rowe||Rechargeable powering system in an electricity meter|
|US7650425||9 Aug 2001||19 Jan 2010||Sipco, Llc||System and method for controlling communication between a host computer and communication devices associated with remote devices in an automated monitoring system|
|US7671480||2 Mar 2010||Fairfax County Water Authority||Systems and methods for remote utility metering and meter monitoring|
|US7683261||23 Mar 2010||Schweitzer Engineering Laboratories, Inc.||Article and method for providing a seal for an encapsulated device|
|US7692538||18 May 2007||6 Apr 2010||Schweitzer Engineering Laboratories, Inc.||User interface for monitoring a plurality of faulted circuit indicators|
|US7697492||23 Jun 2005||13 Apr 2010||Sipco, Llc||Systems and methods for monitoring and controlling remote devices|
|US7702594||24 Sep 2004||20 Apr 2010||Elster Electricity, Llc||System and method for automated configuration of meters|
|US7742430||24 Sep 2004||22 Jun 2010||Elster Electricity, Llc||System for automated management of spontaneous node migration in a distributed fixed wireless network|
|US7746241||18 May 2007||29 Jun 2010||Schweitzer Engineering Laboratories, Inc.||Magnetic probe apparatus and method for providing a wireless connection to a detection device|
|US7756086||3 Mar 2004||13 Jul 2010||Sipco, Llc||Method for communicating in dual-modes|
|US7775422||17 Aug 2010||Arad Measuring Technologies Ltd.||Meter register and remote meter reader utilizing a stepper motor|
|US7868776||11 Jan 2011||Schweitzer Engineering Laboratories, Inc.||Apparatus and system for adjusting settings of a power system device using a magnetically coupled actuator|
|US7877624||25 Jan 2011||Schweitzer Engineering Laboratories, Inc.||Faulted circuit indicator monitoring device with wireless memory monitor|
|US7962101||14 Jun 2011||Silver Spring Networks, Inc.||Method and system for providing a routing protocol for wireless networks|
|US7994994||9 Aug 2011||Itron, Inc.||Embedded antenna apparatus for utility metering applications|
|US8000314||15 Dec 2005||16 Aug 2011||Ipco, Llc||Wireless network system and method for providing same|
|US8013732||6 Sep 2011||Sipco, Llc||Systems and methods for monitoring and controlling remote devices|
|US8031650||4 Oct 2011||Sipco, Llc||System and method for monitoring remote devices with a dual-mode wireless communication protocol|
|US8059006||18 May 2007||15 Nov 2011||Schweitzer Engineering Laboratories, Inc.||System and method for communicating power system information through a radio frequency device|
|US8064412||9 May 2005||22 Nov 2011||Sipco, Llc||Systems and methods for monitoring conditions|
|US8073384||14 Dec 2006||6 Dec 2011||Elster Electricity, Llc||Optimization of redundancy and throughput in an automated meter data collection system using a wireless network|
|US8106563||31 Jan 2012||Exro Technologies Inc.||Polyphasic multi-coil electric device|
|US8109131||7 Feb 2012||Arad Measuring Technologies Ltd.||Meter register transmitting flow rate warning|
|US8138934||21 Nov 2008||20 Mar 2012||Trilliant Networks, Inc.||System and method for false alert filtering of event messages within a network|
|US8144596||21 Nov 2008||27 Mar 2012||Trilliant Networks, Inc.||Communication and message route optimization and messaging in a mesh network|
|US8157160 *||23 Jun 2010||17 Apr 2012||Arad Measuring Technologies Ltd.||Meter register and remote meter reader utilizing a stepper motor|
|US8171136||1 May 2012||Sipco, Llc||System and method for transmitting pollution information over an integrated wireless network|
|US8171364||21 Nov 2008||1 May 2012||Trilliant Networks, Inc.||System and method for power outage and restoration notification in an advanced metering infrastructure network|
|US8203463||19 Jun 2012||Elster Electricity Llc||Wakeup and interrogation of meter-reading devices using licensed narrowband and unlicensed wideband radio communication|
|US8212445||20 Aug 2009||3 Jul 2012||Exro Technologies Inc.||Polyphasic multi-coil electric device|
|US8212667||30 Jun 2011||3 Jul 2012||Sipco, Llc||Automotive diagnostic data monitoring systems and methods|
|US8223010||17 Jul 2012||Sipco Llc||Systems and methods for monitoring vehicle parking|
|US8223034||17 Jul 2012||Eister AMCO Water, LLC||Horizontal pit mount interface device|
|US8233471||31 Jul 2012||Ipco, Llc||Wireless network system and method for providing same|
|US8279080||2 Oct 2012||Fairfax County Water Authority||Systems and methods for remote utility metering and meter monitoring|
|US8284107||9 Oct 2012||Itron, Inc.||RF local area network antenna design|
|US8289182||21 Nov 2008||16 Oct 2012||Trilliant Networks, Inc.||Methods and systems for virtual energy management display|
|US8299975||30 Oct 2012||Itron, Inc.||Embedded antenna apparatus for utility metering applications|
|US8319658||11 Mar 2010||27 Nov 2012||Trilliant Networks, Inc.||Process, device and system for mapping transformers to meters and locating non-technical line losses|
|US8320302||20 Apr 2007||27 Nov 2012||Elster Electricity, Llc||Over the air microcontroller flash memory updates|
|US8330669||11 Dec 2012||Itron, Inc.||Remote antenna coupling in an AMR device|
|US8332055||11 Dec 2012||Trilliant Networks, Inc.||Energy use control system and method|
|US8334787||27 Oct 2008||18 Dec 2012||Trilliant Networks, Inc.||Gas meter having ultra-sensitive magnetic material retrofitted onto meter dial and method for performing meter retrofit|
|US8370697||5 Feb 2013||Trilliant Networks, Inc.||System and method for power outage and restoration notification in an advanced metering infrastructure network|
|US8378847||13 Aug 2010||19 Feb 2013||Elster Amco Water, Llc||Pit mount interface device|
|US8379564||19 Feb 2013||Sipco, Llc||System and method for monitoring remote devices with a dual-mode wireless communication protocol|
|US8410931||31 Aug 2011||2 Apr 2013||Sipco, Llc||Mobile inventory unit monitoring systems and methods|
|US8441402 *||5 Feb 2010||14 May 2013||Wika Alexander Wiegand Gmbh & Co. Kg||Measuring instrument|
|US8446884||21 May 2013||Sipco, Llc||Dual-mode communication devices, methods and systems|
|US8448845||28 May 2013||Arad Measuring Technologies Ltd.||Meter register and remote meter reader utilizing a stepper motor|
|US8449267||29 Sep 2004||28 May 2013||Shurflo, Llc||Pump assembly and fluid metering unit|
|US8462060||25 Oct 2012||11 Jun 2013||Itron, Inc.||Embedded antenna apparatus for utility metering applications|
|US8489063||6 May 2011||16 Jul 2013||Sipco, Llc||Systems and methods for providing emergency messages to a mobile device|
|US8525692||11 Jun 2009||3 Sep 2013||Elster Solutions, Llc||Techniques for limiting demand from an electricity meter with an installed relay|
|US8526156||21 Dec 2011||3 Sep 2013||Schweitzer Engineering Laboratories Inc||High speed signaling of power system conditions|
|US8614529||5 Jun 2012||24 Dec 2013||Exro Technologies, Inc.||Polyphasic multi-coil electric device|
|US8625496||23 May 2012||7 Jan 2014||Ipco, Llc||Wireless network system and method for providing same|
|US8665102||18 Jul 2008||4 Mar 2014||Schweitzer Engineering Laboratories Inc||Transceiver interface for power system monitoring|
|US8666357||20 Jan 2009||4 Mar 2014||Sipco, Llc||System and method for transmitting an emergency message over an integrated wireless network|
|US8690117||27 Jan 2012||8 Apr 2014||Capstone Metering Llc||Water meter|
|US8699377||4 Sep 2009||15 Apr 2014||Trilliant Networks, Inc.||System and method for implementing mesh network communications using a mesh network protocol|
|US8725274||8 Nov 2012||13 May 2014||Trilliant Networks, Inc.||Energy use control system and method|
|US8787246||29 May 2012||22 Jul 2014||Ipco, Llc||Systems and methods for facilitating wireless network communication, satellite-based wireless network systems, and aircraft-based wireless network systems, and related methods|
|US8832428||15 Nov 2011||9 Sep 2014||Trilliant Holdings Inc.||System and method for securely communicating across multiple networks using a single radio|
|US8856323||9 Feb 2012||7 Oct 2014||Trilliant Holdings, Inc.||Device and method for facilitating secure communications over a cellular network|
|US8866634||4 May 2007||21 Oct 2014||Capstone Metering Llc||System and method for remotely monitoring and controlling a water meter|
|US8924587||1 Jun 2012||30 Dec 2014||Sipco, Llc||Systems and methods for controlling communication between a host computer and communication devices|
|US8924588||1 Jun 2012||30 Dec 2014||Sipco, Llc||Systems and methods for controlling communication between a host computer and communication devices|
|US8930571||18 Jan 2010||6 Jan 2015||Sipco, LLP||Systems and methods for controlling communication between a host computer and communication devices|
|US8964708||12 Apr 2010||24 Feb 2015||Sipco Llc||Systems and methods for monitoring and controlling remote devices|
|US8970394||24 Jan 2012||3 Mar 2015||Trilliant Holdings Inc.||Aggregated real-time power outages/restoration reporting (RTPOR) in a secure mesh network|
|US8982856||3 Feb 2009||17 Mar 2015||Ipco, Llc||Systems and methods for facilitating wireless network communication, satellite-based wireless network systems, and aircraft-based wireless network systems, and related methods|
|US8994551||14 Aug 2012||31 Mar 2015||Mueller International, Llc||Systems and methods for remote utility metering and meter monitoring|
|US9001787||19 Sep 2012||7 Apr 2015||Trilliant Networks Inc.||System and method for implementing handover of a hybrid communications module|
|US9013173||13 Sep 2011||21 Apr 2015||Trilliant Networks, Inc.||Process for detecting energy theft|
|US9041349||7 Mar 2012||26 May 2015||Trilliant Networks, Inc.||System and method for managing load distribution across a power grid|
|US9084120||26 Aug 2011||14 Jul 2015||Trilliant Networks Inc.||System and method for interference free operation of co-located transceivers|
|US9105181||8 Jun 2012||11 Aug 2015||Mueller International, Llc||Systems and methods for generating power through the flow of water|
|US9111240||1 May 2012||18 Aug 2015||Sipco, Llc.||System and method for transmitting pollution information over an integrated wireless network|
|US9129497||21 Dec 2011||8 Sep 2015||Statsignal Systems, Inc.||Systems and methods for monitoring conditions|
|US9151654||26 Apr 2011||6 Oct 2015||Sensus Usa Inc.||Method and apparatus for capturing energy from a meter reading device|
|US9189822||19 Oct 2012||17 Nov 2015||Trilliant Networks, Inc.||Process, device and system for mapping transformers to meters and locating non-technical line losses|
|US9282029||3 Mar 2014||8 Mar 2016||Sipco, Llc.||System and method for transmitting an emergency message over an integrated wireless network|
|US9282383||13 Jan 2012||8 Mar 2016||Trilliant Incorporated||Process, device and system for volt/VAR optimization|
|US9287963||13 Mar 2013||15 Mar 2016||Mueller International, Llc||Relay modules for communication within a mesh network|
|US20020019725 *||9 Aug 2001||14 Feb 2002||Statsignal Systems, Inc.||Wireless communication networks for providing remote monitoring of devices|
|US20030016142 *||31 May 2002||23 Jan 2003||Holmes John K.||Two-way wide area telemetry|
|US20030233885 *||9 May 2003||25 Dec 2003||Anton Bird||Fluid metering and control device|
|US20040056807 *||22 Sep 2003||25 Mar 2004||Dan Winter||Meter register|
|US20040210544 *||1 Oct 2003||21 Oct 2004||Shuey Kenneth C||Broadcast technology for an automatic meter reading system|
|US20050007260 *||9 Jun 2004||13 Jan 2005||Dan Winter||Meter register and remote meter reader utilizing a stepper motor|
|US20050059365 *||2 Aug 2004||17 Mar 2005||Higgins Sidney Arch||Mounting bracket for a radio frequency communications device|
|US20050212710 *||12 Apr 2005||29 Sep 2005||Arad Measuring Technologies, Ltd.||Meter register|
|US20060012491 *||14 Jul 2004||19 Jan 2006||Mahowald Peter H||Utility meter reading system|
|US20060038700 *||23 Aug 2005||23 Feb 2006||Scott Cumeralto||Sleeve repeater for forwarding meter data|
|US20060073036 *||29 Sep 2004||6 Apr 2006||Pascual Joseph A||Pump assembly and fluid metering unit|
|US20060103368 *||26 Sep 2005||18 May 2006||Paul Rowe||Rechargeable powering system in an electricity meter|
|US20060103532 *||12 Nov 2004||18 May 2006||International Paper Company||Electromagnetic pathways to eliminate RFID limitations|
|US20060114121 *||28 Oct 2005||1 Jun 2006||Itron, Inc.||Integrated meter module and utility metering system|
|US20060162467 *||15 Sep 2005||27 Jul 2006||Arad Measuring Technologies, Ltd.||Meter register having an encoder|
|US20060218104 *||24 Mar 2005||28 Sep 2006||Johnson Rex A||Method and apparatus for coupling a meter register to an automatic meter reading communication device|
|US20060227006 *||8 Apr 2005||12 Oct 2006||Gould Mark A||Inductive communications port for an automatic meter reading communication device|
|US20060245467 *||7 Apr 2006||2 Nov 2006||Casella Michael H||Apparatus, system and method for monitoring, recording and billing for individual fixture and unit water usage in a multi-unit structure|
|US20070109209 *||10 Oct 2006||17 May 2007||Arad Measuring Technologies Ltd.||Meter register|
|US20070186644 *||14 Feb 2006||16 Aug 2007||Badger Meter, Inc.||Meter with integral register having no visual display of consumption|
|US20070267210 *||18 May 2007||22 Nov 2007||Kesler James R||Article and method for providing a seal for an encapsulated device|
|US20070268644 *||18 May 2007||22 Nov 2007||Schweitzer Edmund O||User interface for monitoring a plurality of faulted circuit indicators|
|US20070269219 *||18 May 2007||22 Nov 2007||Teller Witold R||System and apparatus for optical communications through a semi-opaque material|
|US20070284293 *||8 Jun 2007||13 Dec 2007||Fairfax County Water Authority||Systems and methods for remote utility metering and meter monitoring|
|US20080010528 *||18 May 2007||10 Jan 2008||Park Douglas A||Faulted circuit indicator monitoring device with wireless memory monitor|
|US20080051036 *||4 Apr 2007||28 Feb 2008||Raj Vaswani||Method and system for providing a routing protcol for wireless networks|
|US20080074283 *||25 Sep 2006||27 Mar 2008||Jeff Verkleeren||Utility meter antenna for ground mounted meter boxes|
|US20080143109 *||27 Feb 2008||19 Jun 2008||Fairfax County Water Authority||Systems and Methods for Generating Power Through The Flow of Water|
|US20080209985 *||14 Jan 2008||4 Sep 2008||Arad Measuring Technologies Ltd.||Meter register|
|US20080217339 *||26 Feb 2008||11 Sep 2008||Arn Robert W||Meter box assembly|
|US20080238711 *||2 Apr 2007||2 Oct 2008||Robert Kent Payne||Automated meter reader direct mount endpoint module|
|US20080250869 *||11 Oct 2007||16 Oct 2008||Intelligent Technologies International, Inc.||Remote Monitoring of Fluid Pipelines|
|US20080290986 *||21 May 2007||27 Nov 2008||Badger Meter, Inc.||Method and system for mobile wireless shut-off of utility service|
|US20090058088 *||29 Aug 2008||5 Mar 2009||Fairfax County Water Authority||Systems and Methods for Remote Utility Metering and Meter Monitoring|
|US20090224937 *||9 Jan 2007||10 Sep 2009||Suez Envirommenemt||Device for remote reading of fluid meters|
|US20090309755 *||4 May 2007||17 Dec 2009||Capstone Mobile Techologies Llc||System and method for remotely monitoring and controlling a water meter|
|US20100013632 *||18 Jul 2008||21 Jan 2010||Salewske Tyson J||Transceiver Interface for Power System Monitoring|
|US20100019593 *||20 Aug 2009||28 Jan 2010||Exro Technologies Inc.||Polyphasic multi-coil generator|
|US20100036624 *||11 Feb 2010||Landis+Gyr, Inc.||Stress condition logging in utility meter|
|US20100110617 *||30 Oct 2009||6 May 2010||Itron, Inc.||Embedded antenna apparatus for utility metering applications|
|US20100201585 *||5 Feb 2010||12 Aug 2010||Wika Alexander Wiegand Gmbh & Co. Kg||Measuring Instrument|
|US20100302061 *||2 Dec 2010||Arad Measuring Technologies Ltd.||Meter Register and Remote Meter Reader Utilizing a Stepper Motor|
|US20110038104 *||26 Oct 2010||17 Feb 2011||Itron, Inc.||Automated meter reader direct mount endpoint module|
|US20110062298 *||17 Mar 2011||Elster Amco Water, Inc.||Horizontal pit mount interface device|
|US20110063124 *||13 Aug 2010||17 Mar 2011||Elster Amco Water, Inc.||Pit mount interface device|
|US20110115682 *||19 May 2011||Itron, Inc.||Rf local area network antenna design|
|US20110163925 *||7 Jul 2011||Itron, Inc.||Embedded antenna apparatus for utility metering applications|
|US20130307701 *||9 Feb 2012||21 Nov 2013||South East Water Corporation||Wirelessly Networked Fluid Monitoring Method, System and Apparatus|
|US20140174186 *||25 Feb 2014||26 Jun 2014||Aquarius Spectrum Ltd.||System method and device for leak detection and localization in a pipe network|
|US20140361908 *||6 Jun 2014||11 Dec 2014||Matt Laird||Wireless utility metering devices, systems, and methods|
|USD666518||4 Sep 2012||Capstone Metering Llc||Water meter|
|EP0950877A2 *||7 Apr 1999||20 Oct 1999||IMR S.p.A.||Compact meter for liquids|
|EP0990877A2 *||27 Sep 1999||5 Apr 2000||Betadue Italia s.a.s. Ingegneria per la Vita di Bruno Barattini & C.||Assembly for determining water consumption along a water mains intake pipe|
|EP2032231A2 *||8 Jun 2007||11 Mar 2009||Fairfax County Water Authority||Systems and methods for remote utility metering and meter monitoring|
|EP2479542A1 *||21 Jan 2011||25 Jul 2012||Itron GmbH||Gas volume converter|
|WO2001065015A1 *||1 Mar 2001||7 Sep 2001||Saint-Germain & Straub Societe Anonyme||Installation for measuring and displaying fluid volume and corresponding use for maintaining below frostline and accessible valving and metering equipment|
|WO2002007014A1 *||17 Jul 2001||24 Jan 2002||Telefonaktiebolaget L M Ericsson||Data logger for monitoring a consignment of goods|
|WO2002054022A1 *||2 Jan 2002||11 Jul 2002||Neptune Technology Group Inc.||Self-powered fluid meter|
|WO2003058176A1 *||18 Nov 2002||17 Jul 2003||Netzer Precision Motion Sensors Ltd.||Non-volatile passive revolution counter|
|WO2004046656A1 *||14 Nov 2003||3 Jun 2004||Thierry Sartorius||Fluid flow-monitoring system|
|WO2006110600A2 *||7 Apr 2006||19 Oct 2006||H20Flo, Llc||Apparatus system and method for monitoring, recording and billing individual fixture and unit water usage in a multi-unit structure|
|WO2006110600A3 *||7 Apr 2006||16 Apr 2009||H20Flo Llc||Apparatus system and method for monitoring, recording and billing individual fixture and unit water usage in a multi-unit structure|
|WO2011014187A1 *||31 Jul 2009||3 Feb 2011||Capstone Metering Llc||Self-calibrating and self-powered water meter|
|WO2012148851A1||23 Apr 2012||1 Nov 2012||Sensus Usa Inc.||Method and apparatus for supplying electricity to a meter by the help of a reading device|
|WO2012170885A1 *||8 Jun 2012||13 Dec 2012||Fairfax County Water Authority||Systems and methods for generating power through the flow of water|
|U.S. Classification||340/870.02, 340/870.11, 340/10.41, 702/45, 73/861.78|
|International Classification||G01F15/075, G01D4/00, G01F15/06|
|Cooperative Classification||G01F15/063, G01D4/006, Y04S20/325, Y02B90/243, G01F15/0755|
|European Classification||G01D4/00R2, G01F15/075B, G01F15/06B2|
|24 Apr 2000||AS||Assignment|
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