# US 10,371,264 B2 · Fluid control valve

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- Number: US 10,371,264 B2
- Document ID: US10371264B2
- Status: Granted
- Kind: B2
- Application number: 15/505,896
- Filed: 2014-10-31
- Published: 2018-08-23
- Granted: 2019-08-06
- Earliest claimed: 2014-10-31
- Assignees: Mitsubishi Electric Corporation
- Applicants: Mitsubishi Electric Corporation
- Inventors: Satoru Hasegawa
- Web page: https://patentgrep.com/patent/US10371264B2

## CPC

- F16K 1/2268: {Sealing means for the axis of rotation}
- F02M 26/67: Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
- F16J 15/3268: Mounting of sealing rings
- F16J 15/3276: with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
- F16K 41/046: {for rotating valves}
- F02M 26/54: Rotary actuators, e.g. step motors
- 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)}
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS

## Abstract

A fluid control valve includes a seal member. The seal member includes a cylindrical portion and a flange portion. The flange portion extends radially outward from one end of the cylindrical portion. A valve shaft is inserted in the cylindrical portion. The flange portion is supported between a filter and a plug in a state in which the flange portion is pressed against the plug.

## Claims

### Claim 1

A fluid control valve comprising:
a housing including a fluid passage;
a valve provided in the housing and configured to open or close the fluid passage;
a valve shaft for supporting the valve;
a filter member disposed around the valve shaft and configured to filter fluid from the fluid passage;
a plug member disposed axially opposite the filter member; and
a seal member having a steel sealing surface and having a cylindrical portion, and a flange portion extending radially outward from one end of the cylindrical portion, wherein
the valve shaft is inserted in the cylindrical portion, and
the flange portion of the seal member including the steel sealing surface is directly supported by and contacting the filter member and the plug member in a state in which the flange portion is pressed against the plug member.

### Claim 2 (depends on 1)

The fluid control valve according to claim 1, wherein the cylindrical portion of the seal member is disposed on a side of the filter member.

### Claim 3 (depends on 1)

The fluid control valve according to claim 1, wherein the cylindrical portion of the seal member is disposed on a side of the plug member.

### Claim 4

A fluid control valve comprising:
a housing including a fluid passage;
a valve provided in the housing and configured to open or close the fluid passage;
a valve shaft for supporting the valve;
a filter member disposed around the valve shaft and configured to filter fluid from the fluid passage;
a plug member disposed axially opposite the filter member;
a first seal member having a first cylindrical portion, and a first flange portion extending radially outward from one end of the first cylindrical portion; and
a second seal member having a second cylindrical portion, and a second flange portion extending radially outward from one end of the second cylindrical portion, wherein
the valve shaft is inserted in both the first and second cylindrical portions,
the first cylindrical portion of the first seal member is disposed on a side of the filter member,
the second cylindrical portion of the second seal member is disposed on a side of the plug member, and
the first flange portion of the first seal member and the second flange portion of the second seal member are supported between the filter member and the plug member in a state in which the second flange portion of the second seal member is pressed against the plug member.

### Claim 5 (depends on 4)

The fluid control valve according to claim 4, further comprising a cover member provided to the valve shaft and covering an end portion of the second cylindrical portion, the second cylindrical portion extending axially from the second flange portion toward and beyond the plug member.

### Claim 6

A fluid control valve comprising:
a housing including a fluid passage;
a valve provided in the housing and configured to open or close the fluid passage;
a valve shaft for supporting the valve;
a filter member disposed around the valve shaft and configured to filter fluid from the fluid passage;
a plug member disposed axially opposite the filter member; and
a seal member having a steel sealing surface and having a first cylindrical portion, a flange portion extending radially outward from one end of the first cylindrical portion, and a second cylindrical portion extending axially from the one end of the first cylindrical portion, wherein
the valve shaft is inserted in both the first and second cylindrical portions,
the flange portion of the seal member including the steel sealing surface is directly supported by and contacting the filter member and the plug member in a state in which the flange portion is pressed against the plug member.