[특허]Ball valve and seat assembly

[미국특허] Ball valve and seat assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16K-025/00
출원번호	US-0542399 (1983-10-17)
발명자 / 주소	Koch Ulrich H. (Bainbridge Township Ross County OH) Williams Peter C. (Cleveland Hts. OH)
출원인 / 주소	Whitey Co. (Highland Hts. OH 02)
인용정보	피인용 횟수 : 29 인용 특허 : 1

초록 ▼

A ball valve having an improved relationship between the ball and associated seat rings and an improved seat ring design. The ball is mounted for selective rotation and limited axial movement in a valve body passageway. Seat rings disposed on diametrically opposite sides of the ball about valve inlet and outlet openings each include a ball engaging surface having an arcuate contour. At a relaxed preassembly reference position, the radius of curvature of the ball engaging surface is greater than the radius of curvature of the ball. Frusto-conical disc springs interposed between each seat ring and an associated valve body shoulder additionally urge the seat rings into engagement with the ball. A reinforcing ring disposed at the forward end of each seat ring acts as a rigid bearing surface. Component sizing is such that in the assembled valve, the seat rings are slightly rotatably flexed in response to the engaging surfaces thereof engaging the ball such that the surfaces are distorted to have a mating relationship with the ball. At the same time, the disc springs are compressed while continuously urging the seat ring ball engaging surfaces into ball engagement.

대표청구항 ▼

A ball valve comprising: a body having a central passageway; a ball member including a fluid flow opening therethrough, said ball member being positioned in said passageway and mounted for selective rotation between valve open and closed positions to control fluid flow through said valve, said ball member further including a radius of curvature on an outer wall surface; a pair of radially inward extending shoulders in said passageway disposed circumferentially thereof on opposite sides of and generally facing said ball member; a pair of radially inward extending bearing surfaces in said passageway disposed circumferentially thereof on opposite sides of said ball member, each of said bearing surfaces generally facing an associated one of said shoulders; and, a pair of composite seat member assemblies positioned axially in said passageway on opposite sides of said ball member between an associated shoulder and bearing surface for fluid-sealing engagement with said ball member, each of said seat member assemblies comprising: a seat ring adapted for elastic flexure generally toward and away from the associated bearing surface and including a central opening, a first surface generally facing the associated shoulder, a second surface abutting the associated bearing surface, and a third surface facing said ball member for sealing engagement with said ball member outer wall surface, said seat ring third surface being contoured and having a radius of curvature in an unstressed, unassembled condition greater than the radius of said ball member; and, a disc spring having a central opening and a generally frusto-conical configuration in an unstressed condition interposed between said seat ring and the associated shoulder; said ball member and pair of composite seat member assemblies being sized so that when assembled axially between said shoulders, each seat ring is flexted away in a curved manner from the associated bearing surface and stressed to have a radius of curvature at said seat ring third surface the same as said ball member radius of curvature and is disposed in sealing engagement with said ball member over the extent of said seat ring third surface with equal stress distribution across the seat ring third surface, each disc spring being stressed to a flattened condition for continuously urging the third surface of the associated seat ring toward engagement with said ball member.

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Koch Ulrich H. (Bainbridge Township ; Cuyahoga County OH) Williams Peter C. (Cleveland Hts. OH), Ball valve and seat assembly.
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이 특허를 인용한 특허 (29) 인용/피인용 타임라인 분석

Tsai,Chi Lung, Ball valve.
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Beasley, Marvin E., Ball valve having multiple moveable seats.
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Tow John P., Ball valve having one-piece packing.
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Bearer, Mark D.; Hasak, David; Kvarda, Eric, Ball valve seat arrangement.
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Hotton, Bruce A.; Brown, Cal R.; Carlson, George A.; Iveljic, Joseph K.; Timko, Jared S.; Mracek, Kevin J., Ball valve seat seal.
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Hotton, Bruce A.; Brown, Cal R.; Carlson, George A.; Iveljic, Joseph K.; Timko, Jared S.; Mracek, Kevin J., Ball valve seat seal.
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Thomas, Kurt R., Ball valve with anti-rotational pressure plate.
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Thomas, Kurt R., Ball valve with anti-rotational pressure plate.
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Thomas, Kurt R., Ball valve with anti-rotational pressure plate.
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Beasley, Marvin E., Bi-directional sealing ball valve.
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Thomas, Kurt R., Dynamic ball valve sealing device for three-way valves.
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Anderson, Alfred Lewis; Junier, M. Robert, High pressure ball valve.
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Anderson, Alfred Lewis; Junier, M. Robert, High pressure ball valve and packing.
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Anderson, Alfred Lewis; Junier, M. Robert, High pressure ball valve and seat.
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Broman, Nelson, Pneumatic control valve.
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Antoniello Frank (Commack NY), Sink handle valve.
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Doutt, Michael L., Three-way poppet valve with internal check feature.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable check valve.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable check valve.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable down-hole stimulation array.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable down-hole stimulation system.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable fluid end.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable fluid end.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable fluid end.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable fluid end.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable hydraulic stimulator.
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Gilstad, Dennis W.; Gilstad, Barbara C., Tunable valve assembly.
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Seko, Naohito; Yamamoto, Yoshiaki; Yokoyama, Shinichi; Nakano, Yuuji; Sano, Ryo, Valve device.
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Cordova, Tony; Cornelssen, Michael, Valve seat retention pin.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Ball valve and seat assembly 원문보기