[특허]Flow volume limiting device

Brown, Kevin

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Flow volume limiting device

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01F-011/00 E03B-001/00
미국특허분류(USC)	222/020; 222/014; 137/012; 137/047
출원번호	UP-0303494 (2005-12-16)
등록번호	US-7617949 (2009-11-27)
발명자 / 주소	Johnson, Dwight N.
출원인 / 주소	Brown, Kevin
대리인 / 주소	Greer, Burns & Crain, Ltd.
인용정보	피인용 횟수 : 1 인용 특허 : 6

초록
▼

A turbine wheel and gear system rotate an output shaft in response to flow, where the output shaft is connected to a clutch cup that engages a clutch and valve disk. The disk cooperates with a valve seat formed on a piston to permit/prevent flow within the piston. During flow, the clutch clamps to the disk, and the piston and disk move downstream until an associated control member hits a stop, opening the valve (as the disk stops), while the piston continues downstream. The clutch rotates the disk and control member, and if a maximum flow volume occurs, the control member rotates to an interrupt position and is released from the stop, closing the valve. Passages allow restricted flow to disengage the clutch and permit a spring to move the piston and valve upstream until engaging a reset cam that rotates the control member back to an initial position.

대표
청구항
▼

What is claimed is: 1. A flow volume limiting device for use in a liquid supply system, said flow volume limiting device comprising: a housing having an inlet and an outlet; a valve assembly for controlling flow though said housing; a flow measuring assembly responsive to flow through said housing and providing a rotary output proportional to measured flow; an interrupt assembly having a rotary control member closing said valve assembly in response to rotation of said control member in a first direction to an interrupt position; a reset cam system engageable with said rotary control member and rotating said rotary control member in a second direction to an initial position, rotationally spaced from said interrupt position; and a friction clutch assembly connected between said flow measuring assembly and said rotary control member; said friction clutch assembly including an clutch member responsive to pressure resulting from flow in said housing for engaging said clutch assembly to rotationally couple said flow measuring assembly to said rotary control member in the presence of flow and disengaging said clutch assembly to rotationally decouple said flow measuring assembly from said rotary control member in the absence of flow. 2. A flow volume limiting device as claimed in claim 1, further comprising an adjustment member including said reset cam, said adjustment member being movably mounted in said housing for varying said initial position. 3. A flow volume limiting device as claimed in claim 1, said valve assembly including a flow passage, a valve seat surrounding said flow passage and a valve member movable relative to said valve seat. 4. A flow volume limiting device as claimed in claim 3, said valve member comprising a disk. 5. A flow volume limiting device as claimed in claim 4, said clutch member being frictionally engageable with said disk. 6. A flow volume limiting device as claimed in claim 5, said clutch member being a flexible, resilient cup shaped body member having a rim engageable with said disk, and a restricted bleed passage extending from the interior of said cup shaped body. 7. A flow volume limiting device as claimed in claim 5, said rotary control member being connected to said disk. 8. A flow volume limiting device as claimed in claim 1, further comprising a piston slideably mounted in said housing, said valve assembly including a flow passage in said piston, said piston including a valve seat surrounding said flow passage, and a valve member movable relative to said valve seat. 9. A flow volume limiting device as claimed in claim 8, said valve member being a disk having a first opposed surface engageable with said valve seat, said clutch member being engageable with a second opposed surface of said disk. 10. In a flow volume limiting device for use in a liquid supply system, the combination comprising: a housing having an inlet and an outlet; a piston slideably mounted in said housing for movement toward and away from said outlet, a flow passage through said piston, and a valve seat on said piston surrounding said flow passage; a valve disk cooperating with said valve seat for opening and closing said flow passage; a control member connected to said valve disk; and a stop engaged by said control member upon movement of said piston toward said outlet to stop said valve disk and open said valve assembly in response to further movement of said piston toward said outlet. 11. The combination of claim 10 further comprising a spring engaging said piston and urging said piston away from said outlet. 12. The combination of claim 11 further comprising a restricted flow passage across said valve seat. 13. The combination of claim 10 further comprising a rotating flow volume responsive element in said housing and a friction clutch assembly connected between said flow volume responsive element and said control member. 14. A flow volume limiting device for use in a liquid supply system and comprising: a housing defining a flow path; a flow responsive piston slideable along said flow path in downstream and upstream directions; a spring biasing said piston in the upstream direction; a flow passage through said piston and a valve seat on said piston surrounding said flow passage; a valve member cooperating with said valve seat to permit and prevent flow through said flow passage; a control element connected to said valve member; a stop engageable by said control member to stop downstream movement of said control member and valve during downstream movement of said piston to separate said valve member from said valve seat; a flow volume measuring assembly having an output shaft rotating in response to flow in said flow path; a friction clutch interconnecting said flow measuring assembly and said control element for rotating said control element in a first direction when said clutch is engaged; said friction clutch being exposed to liquid pressure differential in said flow path for engaging said clutch when flow is present and disengaging said clutch when flow is absent; a recess in said control element registering with said stop permitting downstream movement of said valve member against said valve seat in response to rotation of said control element to an interrupt position; and a reset cam engageable by said control element for rotating said control element in a second direction to an initial position in response to upstream movement of said control element. 15. A flow volume limiting device as claimed in claim 14, said friction clutch including a flexible, resilient cup connected to said output shaft; said cup being forced into flattened engagement with said valve member in response to flow in said flow path. 16. A flow volume limiting device as claimed in claim 15 further comprising a restricted bleed path communicating with the underside of said cup permitting separation of said cup from said valve member in the absence of flow in said flow path. 17. A flow volume limiting device as claimed in claim 16, said flow volume measuring assembly including a turbine wheel and a speed reduction gear assembly connected between said turbine wheel and said output shaft. 18. A flow volume measuring device as claimed in claim 14 further comprising an adjustment member movably supported in said housing, said reset cam being formed on said adjustment member for varying said initial position of said control member. 19. A flow volume limiting device as claimed in claim 1, wherein said clutch member is made of an elastomeric material. 20. A flow volume limiting device as claimed in claim 14, wherein said friction clutch comprises an elastomeric member. 21. The combination of claim 10, further comprising an adjustment member seated near said outlet, wherein said adjustment member includes a secondary seating area that is configured and arranged to engage a surface of said valve seat that is different from a surface engaged by said valve disk.

이 특허에 인용된 특허 (6)

이 특허를 인용한 특허 피인용횟수: 1

Daniell, Thomas Evan; Alexander, Brian Thomas. Water reservoir shutoff. USP2014078783289.

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특허 상세정보

Flow volume limiting device

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이 특허에 인용된 특허 (6)

이 특허를 인용한 특허 피인용횟수: 1

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Flow volume limiting device

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이 특허에 인용된 특허 (6)

이 특허를 인용한 특허 피인용횟수: 1

IPC 상위 출원인

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상세정보조회

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IPC 상세정보(version : 201201)

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