# US 10,502,323 B2 · Shut-off valve for integration into a gas meter

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- Number: US 10,502,323 B2
- Document ID: US10502323B2
- Status: Granted
- Kind: B2
- Application number: 15/184,251
- Filed: 2016-06-16
- Published: 2016-12-22
- Granted: 2019-12-10
- Earliest claimed: 2015-06-17
- Assignees: Johnson Electric International AG
- Applicants: Johnson Electric S.A.
- Inventors: Sten Waehrisch; Sten Ritschel; Marcus Herrmann
- Web page: https://patentgrep.com/patent/US10502323B2

## CPC

- F16K 1/42: Valve seats (for double-seat valves F16K1/44)
- F16K 1/12: with streamlined valve member around which the fluid flows when the valve is opened
- F16K 31/047: {characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means (F16K31/043 takes precedence)}
- F16K 31/508: {the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element}
- F16K 31/53: with toothed gearing
- G01F 15/005: {Valves (valves in general F16K)}
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME

## Abstract

A shut-off valve for integration into an intelligent gas meter for residential or industrial gas supply, has an inlet, an outlet and a valve seat having a lip seal. A shut-off body is longitudinally displaceable with respect to the valve by a motor driven transmission, using a nut-threaded-spindle drive, to engage with or disengage from, the seal to open or close the valve. The transmission of the valve remains largely unbiased in the closed state while maintaining the gas-tightness of the valve.

## Claims

### Claim 1

A method of operating a shut-off valve comprising:
providing the valve for integration in a gas meter, comprising:
a shut-off body which is movable longitudinally relative to a valve seat by a motor-driven reduction transmission with an integrated nut-threaded spindle drive;
wherein the shut-off body is movable by the motor-driven reduction transmission and remains in one of an open valve position, a closed, tensioned valve position, and a closed, relaxed valve position;
wherein when switching the valve to a closed position, the shut-off body initially is moved to the closed, tensioned valve position where the shut-off body is compressed against the valve seat for maintaining a gas-tightness from an open valve position, and subsequently is moved to the closed, relaxed valve position where the shut-off body is relaxed by moving back while maintaining a gas-tightness by the motor-driven reduction transmission;
wherein in a motion direction of the shut-off body, a distance between the shut-off body and the valve seat at the closed, relaxed valve position, is greater that a distance between the shut-off body and the valve seat at the closed, tensioned valve position.

### Claim 2 (depends on 1)

The method of claim 1 wherein detectors directly or indirectly detect the position of the shut-off body.

### Claim 3 (depends on 1)

The method of claim 1, wherein during the switching of the valve into the closed position, the shut-off body is in a time-controlled way moved to the closed, relaxed valve position while maintaining the gas-tightness of the valve.