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WO1994001741A1 - Registering mechanism for dry gas meter - Google Patents

Registering mechanism for dry gas meter Download PDF

Info

Publication number
WO1994001741A1
WO1994001741A1 PCT/GB1993/001365 GB9301365W WO9401741A1 WO 1994001741 A1 WO1994001741 A1 WO 1994001741A1 GB 9301365 W GB9301365 W GB 9301365W WO 9401741 A1 WO9401741 A1 WO 9401741A1
Authority
WO
WIPO (PCT)
Prior art keywords
index
digit
gas meter
gear teeth
gas
Prior art date
Application number
PCT/GB1993/001365
Other languages
French (fr)
Inventor
Meters Limited Smith
Original Assignee
Roberts, John, Arthur
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roberts, John, Arthur filed Critical Roberts, John, Arthur
Publication of WO1994001741A1 publication Critical patent/WO1994001741A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
    • G01F3/20—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows
    • G01F3/22—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases
    • G01F3/227—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases characterised by the means for transfer of membrane movement information to indicating means
    • G01F3/228—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having flexible movable walls, e.g. diaphragms, bellows for gases characterised by the means for transfer of membrane movement information to indicating means using mechanical transmission means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/14—Design features of general application for transferring a condition from one stage to a higher stage
    • G06M1/16—Design features of general application for transferring a condition from one stage to a higher stage self-operating, e.g. by Geneva mechanism
    • G06M1/166—Design features of general application for transferring a condition from one stage to a higher stage self-operating, e.g. by Geneva mechanism with dials, pointers or similar type indicating means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M1/00—Design features of general application
    • G06M1/27—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum
    • G06M1/276—Design features of general application for representing the result of count in the form of electric signals, e.g. by sensing markings on the counter drum using mechanically-actuated contacts

Definitions

  • This invention relates to a dry gas meter of the kind in which flexible diaphragms work back-and-forth in chambers to which the gas being metered is alternately admitted and exhausted.
  • the movements of the diaphragms represent the volume of gas which is passing through the meter, and a mechanism is provided for counting these movements and deriving a measure of the gas volume from the count.
  • Such meters will be termed hereinafter “meters of the kind described”.
  • these counting mechanisms comprise a series of indicators, one for each decimal digit of a counted multi-digited number, and a mechanical geared drive system connecting the indicators so that they are driven at appropriate relative speeds over respective indices, each marked with digits 0 - 9 over which the indicators move.
  • the invention provides a dry gas meter of the kind in which flexible diaphragms work back-and-forth in chambers to which the gas being metered is alternately admitted and exhausted, and a counting mechanism is provided for counting these movements and deriving a measure of the gas volume, the counting mechanism comprising a series of indicators each providing one decimal digit of a multi-digited number representing the counted total volume and a mechanical geared drive system connecting the indicators so that they are driven over respective indices each marked with decimal digits 0 - 9, characterized by said .
  • mechanical geared drive system being adapted to drive the indicators through successive steps across the indices, each step carrying the indicator from one digit to the next without an inter ⁇ mediate step.
  • Each indicator may comprise a pointer rotating in said steps over a circular dial providing digits 0 - 9 so that it points to each digit in turn.
  • the pointers may be secured to rotate with index wheels driven in steps through a Geneva mechanism, a known method of transmitting an intermittent drive in which a drive gear has an incomplete ring of teeth.
  • the index wheels are discs located side-by-side on parallel but spaced apart axes.
  • the mechanism for counting the diaphragm movements includes means for reading each digit of the counted number and sending a coded electrical signal representing said digit to a remote reading station.
  • Figure 1 is an exploded perspective view of the main component of a gas meter
  • Figure 2 is an exploded perspective view of part of the meter of Figure 1
  • Figure 3 is an exploded perspective view of the upper end of the gas meter of Figure 1
  • Figure 4 is an exploded perspective view of an index assembly of Figure 3
  • Figure 5 is a section through the index assembly of
  • the gas meter comprises two chambers (11) arranged side-by-side, each divided vertically by a flexible diaphragm (13) so that gas being measured may be alternately admitted and exhausted from either side of the diaphragm, causing it to oscillate back-and-forth. As is usual, the oscillations of the diaphragm are counted to provide a measure of the volume of gas which has passed through the meter.
  • the meter body depends on a unitary core (15) which is an aluminium die casting providing structure for the meter casing, inner gas chamber, valve gear container, index housing and gasways, as described hereinafter in more detail.
  • the core comprises a central vertical partition (16) comprising one side of each of the chambers (11), and two angled walls (17) either side of the partition, each forming one dished shape of a chamber.
  • the upper end of the core forms a recess (19) opening to the side which is the index housing, and an irregular housing (23) [Figure 3] opening to the top which houses valves, valve drive gear, and index drive means.
  • the two chambers are completed by cast aluminium outer pans (25,26) [ Figure 1], each having a diaphragm (13), both secured to the core (15).
  • Each diaphragm has a central disc (27) secured by a flag arm to a flag (28) extending into housing (23) to drive the valve drive gear and index drive means.
  • the lower end of the core forms a housing (20) which is closed by a cast aluminium lower cover (30) having a central bossed gas inlet (31) which co ⁇ municates with housing (20).
  • the upper housing (23) is closed byacast aluminium upper cover (33) having a central bossed gas outlet (34') which com ⁇ unicates with an exhaust tube (36) [Figure 3] in housing (23).
  • the index housing (19) houses an index assembly (34) [seen in detail in Figure 4], and has a cover (35) having a viewing plate through which the meter reading can be read.
  • a sealed bush bearing (37) in the rear wall of the housing allows a lay shaft (41) passage to drive an output gear (38) and through it change wheel (39) and index drive gear (40), which operates the index assembly (34) to count the oscillations of the diaphragm.
  • the core Adjacent each outer pan (25, 26), the core (15) has an angled face (43, 44) which mates with a similarly angled face (45, 46) on the corresponding outer pan.
  • Gasways (47, 48) connect through openings (50) into the interior of the pans on the outer side of diaphragms (13).
  • the core On the inner side of the diaphragms (13) the core provides gasways (51), also connected to the interior of the chambers (11).
  • Gasways (51, 48, 47) all extend up through the core and through a lower wall of the upper housing (23) ending in the same plane.
  • Exhaust tube (36) [ Figure 3] is forked to provide a pair of entrances (61) and the tube is mounted so that these lie in the same plane as the entries to gasways (51, 48, 47).
  • a valve grating (60) for each chamber (11) covers the two gasways to either side of the diaphragm and one of the exhaust tube entrances (61). Gasways from housing (20) open into the upper housing (23) so that it is at all times filled with the gas being metered.
  • An oscillating valve cover (62) for each valve grating alternately admits gas from housing.
  • Flag rods (28) drive oscillating top arms (64) which are connected to cranks (65) which rotate a gearbox (66) .
  • Gear (67) driven by the gearbox output connects with output gear (68) which rotates layshaft (41) which in turn drives output gear (38) [ Figure 2].
  • Change wheel (39) is selected to provide a gear ratio which effectively calibrates the individual meter.
  • Cover drive arms (69) are driven from gears (70) of the gearbox and connected to the valve covers (62) to oscillate them in timed relationship to the diaphragm movements as described above.
  • Change wheel (39) drives index drive gear (40) at the calibrated rate to rotate a first index wheel (71) in the index assembly (34) [ Figure 4].
  • a counting series of four disc-shaped counting index wheels (72, 73, 74, 75) are mounted in the assembly wall (76) to rotate about parallel, spaced apart axes and interconnected byaseries of pinions (77) which are intermittently driven by the index wheels.
  • Each index wheel carries on one side a continuous gear (78) [ Figure 5] and on the other side an isolated pair of teeth (79).
  • Each pinion (77) carries on one side a drive gear (82) which continuously engages gear (78) of one index wheel and on the other side a transfer gear (83) which is intermittently engaged by teeth (79) of the previous index wheel.
  • each pinion is moved through a known arc once in each rotation of the previous index wheel and this arc is transferred to the succeeding index wheel.
  • each index wheel is driven in steps, not in a continuous movement.
  • the gearing of the pinions and index wheel is selected so that each wheel steps in increments of 1/10 of a revolution.
  • Each succeeding index wheel relates to a higher value digit of the total decimal counted number.
  • Each index wheel (72, 73, 74, 75) is mounted on a shaft which passes through a front wall (80) of the index assembly to mount a pointer (81).
  • Each pointer (81) co-operates with a dial over which it is driven to point to an appropriate decimal index number.
  • each pointer is stationary most of the time, stepping rapidly from one idex number to the next when the appropriate pinion (77) drives the respective index wheel. Thus no intermediate position need be read, all the pointers pointing directly at an index number.
  • index wheels are discs located virtually side-by-side the whole index assembly is shallow and can be fitted into housing (19) with little or no protrusion from the overall surface of the meter, thus contributing to the small size and neatness of the meter.
  • an electronic reading device is associated with the pointers for transmitting electrical signals representing the reading to a remote station. Since the pointers point unai ⁇ biguously at a discrete number the means for reading them electrically is much simplified. For instance, discrete electrical contacts may be associated with each digit, with the pointer or index wheel carrying a sliding electrical contact which will unambiguously make contact as the pointer indicates a number.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

A gas meter of the kind which has flexible diaphragms working back-and-forth in chambers to which the gas being metered is alternately admitted and exhausted has a counting mechanism shown in the figure for counting the diaphragm movements. A series of index wheels (72, 73, 74, 75) each connected to a pointer (81), and each connected by a pinion (77) to the next, is driven intermittently by a Geneva mechanism. By this means the pointers (81) are driven intermittently through 1/10 revolution so that they each point at a discrete one of decimal numbers 0-9, thus making reading of the index more easy.

Description

REGISTERING MECHANISM FOR DRY GAS METER
This invention relates to a dry gas meter of the kind in which flexible diaphragms work back-and-forth in chambers to which the gas being metered is alternately admitted and exhausted. The movements of the diaphragms represent the volume of gas which is passing through the meter, and a mechanism is provided for counting these movements and deriving a measure of the gas volume from the count. Such meters will be termed hereinafter "meters of the kind described".
Commonly these counting mechanisms comprise a series of indicators, one for each decimal digit of a counted multi-digited number, and a mechanical geared drive system connecting the indicators so that they are driven at appropriate relative speeds over respective indices, each marked with digits 0 - 9 over which the indicators move. Problems arise in the reading of a digit when the indicator rests at a position intermediate the marked numbers, and this is particularly found when efforts are made to provide electrical signals relating to the counted number for remote reading of the meter, since the indicator can come to rest at an ambiguous position, trembling between one reading and the next.
The invention provides a dry gas meter of the kind in which flexible diaphragms work back-and-forth in chambers to which the gas being metered is alternately admitted and exhausted, and a counting mechanism is provided for counting these movements and deriving a measure of the gas volume, the counting mechanism comprising a series of indicators each providing one decimal digit of a multi-digited number representing the counted total volume and a mechanical geared drive system connecting the indicators so that they are driven over respective indices each marked with decimal digits 0 - 9, characterized by said . mechanical geared drive system being adapted to drive the indicators through successive steps across the indices, each step carrying the indicator from one digit to the next without an inter¬ mediate step.
Each indicator may comprise a pointer rotating in said steps over a circular dial providing digits 0 - 9 so that it points to each digit in turn. The pointers may be secured to rotate with index wheels driven in steps through a Geneva mechanism, a known method of transmitting an intermittent drive in which a drive gear has an incomplete ring of teeth. Preferably the index wheels are discs located side-by-side on parallel but spaced apart axes.
According to another aspect, the mechanism for counting the diaphragm movements includes means for reading each digit of the counted number and sending a coded electrical signal representing said digit to a remote reading station.
A specific embodiment of the invention is shown in the accompanying drawings, in which:-
Figure 1 is an exploded perspective view of the main component of a gas meter, Figure 2 is an exploded perspective view of part of the meter of Figure 1,
Figure 3 is an exploded perspective view of the upper end of the gas meter of Figure 1, Figure 4 is an exploded perspective view of an index assembly of Figure 3, and Figure 5 is a section through the index assembly of
Figure 4.
The gas meter comprises two chambers (11) arranged side-by-side, each divided vertically by a flexible diaphragm (13) so that gas being measured may be alternately admitted and exhausted from either side of the diaphragm, causing it to oscillate back-and-forth. As is usual, the oscillations of the diaphragm are counted to provide a measure of the volume of gas which has passed through the meter.
As seen best in Figure 1, the meter body depends on a unitary core (15) which is an aluminium die casting providing structure for the meter casing, inner gas chamber, valve gear container, index housing and gasways, as described hereinafter in more detail. The core comprises a central vertical partition (16) comprising one side of each of the chambers (11), and two angled walls (17) either side of the partition, each forming one dished shape of a chamber. The upper end of the core forms a recess (19) opening to the side which is the index housing, and an irregular housing (23) [Figure 3] opening to the top which houses valves, valve drive gear, and index drive means.
The two chambers are completed by cast aluminium outer pans (25,26) [Figure 1], each having a diaphragm (13), both secured to the core (15). Each diaphragm has a central disc (27) secured by a flag arm to a flag (28) extending into housing (23) to drive the valve drive gear and index drive means.
The lower end of the core forms a housing (20) which is closed by a cast aluminium lower cover (30) having a central bossed gas inlet (31) which coπmunicates with housing (20). The upper housing (23) is closed byacast aluminium upper cover (33) having a central bossed gas outlet (34') which comπunicates with an exhaust tube (36) [Figure 3] in housing (23).
The index housing (19), as best seen in Figure 2, houses an index assembly (34) [seen in detail in Figure 4], and has a cover (35) having a viewing plate through which the meter reading can be read. A sealed bush bearing (37) in the rear wall of the housing allows a lay shaft (41) passage to drive an output gear (38) and through it change wheel (39) and index drive gear (40), which operates the index assembly (34) to count the oscillations of the diaphragm.
Adjacent each outer pan (25, 26), the core (15) has an angled face (43, 44) which mates with a similarly angled face (45, 46) on the corresponding outer pan. Gasways (47, 48) connect through openings (50) into the interior of the pans on the outer side of diaphragms (13). On the inner side of the diaphragms (13) the core provides gasways (51), also connected to the interior of the chambers (11).
Gasways (51, 48, 47) all extend up through the core and through a lower wall of the upper housing (23) ending in the same plane. Exhaust tube (36) [Figure 3] is forked to provide a pair of entrances (61) and the tube is mounted so that these lie in the same plane as the entries to gasways (51, 48, 47). A valve grating (60) for each chamber (11) covers the two gasways to either side of the diaphragm and one of the exhaust tube entrances (61). Gasways from housing (20) open into the upper housing (23) so that it is at all times filled with the gas being metered. An oscillating valve cover (62) for each valve grating alternately admits gas from housing. (23) to either side of the diaphragm and exhausts it from the chambers into exhaust tube (36) and out of outle (34' ) . Thus the flowing gas is forced to move the diaphragms back-and- forth which are secured to move flag rods (28) . Flag rods (28) drive oscillating top arms (64) which are connected to cranks (65) which rotate a gearbox (66) . Gear (67) driven by the gearbox output connects with output gear (68) which rotates layshaft (41) which in turn drives output gear (38) [Figure 2]. Change wheel (39) is selected to provide a gear ratio which effectively calibrates the individual meter.
Cover drive arms (69) are driven from gears (70) of the gearbox and connected to the valve covers (62) to oscillate them in timed relationship to the diaphragm movements as described above.
Change wheel (39) drives index drive gear (40) at the calibrated rate to rotate a first index wheel (71) in the index assembly (34) [Figure 4]. A counting series of four disc-shaped counting index wheels (72, 73, 74, 75) are mounted in the assembly wall (76) to rotate about parallel, spaced apart axes and interconnected byaseries of pinions (77) which are intermittently driven by the index wheels.
Each index wheel carries on one side a continuous gear (78) [Figure 5] and on the other side an isolated pair of teeth (79). Each pinion (77) carries on one side a drive gear (82) which continuously engages gear (78) of one index wheel and on the other side a transfer gear (83) which is intermittently engaged by teeth (79) of the previous index wheel. Thus each pinion is moved through a known arc once in each rotation of the previous index wheel and this arc is transferred to the succeeding index wheel. Thus each index wheel is driven in steps, not in a continuous movement. The gearing of the pinions and index wheel is selected so that each wheel steps in increments of 1/10 of a revolution. Each succeeding index wheel relates to a higher value digit of the total decimal counted number. Each index wheel (72, 73, 74, 75) is mounted on a shaft which passes through a front wall (80) of the index assembly to mount a pointer (81). Each pointer (81) co-operates with a dial over which it is driven to point to an appropriate decimal index number. As is clear from the above description, each pointer is stationary most of the time, stepping rapidly from one idex number to the next when the appropriate pinion (77) drives the respective index wheel. Thus no intermediate position need be read, all the pointers pointing directly at an index number.
As best seen in Figures 2, 4 and 5, because the index wheels are discs located virtually side-by-side the whole index assembly is shallow and can be fitted into housing (19) with little or no protrusion from the overall surface of the meter, thus contributing to the small size and neatness of the meter.
According to another embodiment, an electronic reading device is associated with the pointers for transmitting electrical signals representing the reading to a remote station. Since the pointers point unaiπbiguously at a discrete number the means for reading them electrically is much simplified. For instance, discrete electrical contacts may be associated with each digit, with the pointer or index wheel carrying a sliding electrical contact which will unambiguously make contact as the pointer indicates a number.

Claims

CLAIMS;-
1. A dry gas meter of the kind in which flexible diaphragms (13) work back-and-forth in chambers (11) to which the gas being metered is alternately admitted and exhausted, and a counting mechanism (34) is provided for counting these movements and deriving a measure of the gas volume, the counting mechanism (34) comprising a series of indicators (81) each providing one decimal digit of a multi-digited number representing the counted total volume and a mechanical geared drive system (72, 73, 74, 75, 77) connecting the indicators (81) so that they are driven over respective indices each marked with decimal digits 0 - 9, characterized by said mechanical geared drive system (72, 73, 74, 75, 77) being adapted to drive the indicators (81) through successive steps across the indices, each step carrying the indicator from one digit to the next without an intermediate step.
2. A dry gas meter as claimed in claim 1, further characterized by each indicator (81) comprising a pointer (81) rotating by said steps over a circular dial bearing decimal digits 0 - 9 so that the pointer points to each digit in turn.
3. A gas meter as claimed in claim 1 or claim 2, further characterized by said mechanical geared drive system comprising a Geneva mechanism in which there is a series of index wheels (72, 73, 74, 75) each connected to one indicator (81) and each having on one side a complete ring of gear teeth (78) and on the other side a single pair of gear teeth (79) and pinions (77) driving intermittently from one index wheel to the next, each pinion having on one side a transfer gear (83) which is intermittently engaged by the single pair of gear teeth (79) of one index wheel and on the other side a drive gear (82) which engages continuously the complete ring of gear teeth (78) of the succeeding index wheel, the gearing ratios being such that each wheel is driven by 1/10 of a revolution when the single pair of gear teeth (79) are in operation, once in every revolution of the preceding index wheel.
4. A gas meter as claimed in any of claims 1 to 3, having means associated with each digit for producing electrical output signals representing the indicated digit, further characterized by said means comprising a discrete electrical contact for each digit.
5. A gas meter as claimed in claim 3, further characterized by said index wheels (72, 73, 74, 75) being located side-by-side to rotate about parallel but spaced-apart axes.
PCT/GB1993/001365 1992-07-14 1993-06-30 Registering mechanism for dry gas meter WO1994001741A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929214877A GB9214877D0 (en) 1992-07-14 1992-07-14 Dry gas meter
GB9214877.4920714 1992-07-14

Publications (1)

Publication Number Publication Date
WO1994001741A1 true WO1994001741A1 (en) 1994-01-20

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ID=10718636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/001365 WO1994001741A1 (en) 1992-07-14 1993-06-30 Registering mechanism for dry gas meter

Country Status (2)

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GB (1) GB9214877D0 (en)
WO (1) WO1994001741A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1295126B1 (en) * 1999-07-28 2007-01-24 Novartis Vaccines and Diagnostics, Inc. Hepatitis c viral antigen immunoassay detection systems
US7284455B2 (en) * 2005-04-19 2007-10-23 Matador International Inc. Electronic environment sensing instrument having an analog indicator
WO2009036600A1 (en) * 2007-09-20 2009-03-26 Yuejian Zhou A water meter having an electrical counter with an intermittently driving mechanism
EP2249133A1 (en) * 2009-05-07 2010-11-10 Actaris Gaszählerbau GmbH Gas meter
RU2594421C1 (en) * 2015-06-26 2016-08-20 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Fluid medium flowmeter
US11181407B2 (en) 2016-09-26 2021-11-23 Itron, Inc. Efficient battery-powered meter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE282039C (en) *
DE31633C (en) * 1884-04-23 1885-05-23 A. BONNA in Paris Apparatus for measuring or counting liquids or gases, can also be used as a motor
US1823953A (en) * 1930-01-24 1931-09-22 George R Rich Gas meter
US2281670A (en) * 1940-02-19 1942-05-05 Brown William Laird Gas meter
US3195814A (en) * 1963-04-30 1965-07-20 Ripley Company Inc Meter device
US3537005A (en) * 1967-08-25 1970-10-27 American Meter Co Metering apparatus with digital electrical readout
US4531051A (en) * 1984-01-30 1985-07-23 Westinghouse Electric Corp. Meter register with incremental indicia wheel movement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE282039C (en) *
DE31633C (en) * 1884-04-23 1885-05-23 A. BONNA in Paris Apparatus for measuring or counting liquids or gases, can also be used as a motor
US1823953A (en) * 1930-01-24 1931-09-22 George R Rich Gas meter
US2281670A (en) * 1940-02-19 1942-05-05 Brown William Laird Gas meter
US3195814A (en) * 1963-04-30 1965-07-20 Ripley Company Inc Meter device
US3537005A (en) * 1967-08-25 1970-10-27 American Meter Co Metering apparatus with digital electrical readout
US4531051A (en) * 1984-01-30 1985-07-23 Westinghouse Electric Corp. Meter register with incremental indicia wheel movement

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1295126B1 (en) * 1999-07-28 2007-01-24 Novartis Vaccines and Diagnostics, Inc. Hepatitis c viral antigen immunoassay detection systems
US7284455B2 (en) * 2005-04-19 2007-10-23 Matador International Inc. Electronic environment sensing instrument having an analog indicator
WO2009036600A1 (en) * 2007-09-20 2009-03-26 Yuejian Zhou A water meter having an electrical counter with an intermittently driving mechanism
EP2249133A1 (en) * 2009-05-07 2010-11-10 Actaris Gaszählerbau GmbH Gas meter
RU2594421C1 (en) * 2015-06-26 2016-08-20 Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" Fluid medium flowmeter
US11181407B2 (en) 2016-09-26 2021-11-23 Itron, Inc. Efficient battery-powered meter

Also Published As

Publication number Publication date
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