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특허 상세정보

Valve actuator with instrument mounting manifold

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-031/122   
미국특허분류(USC) 137/270 ; 251/062 ; 91/054 ; 92/059
출원번호 US-0629898 (1996-04-10)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Marshall, O'Toole, Gerstein, Murray & Borun
인용정보 피인용 횟수 : 13  인용 특허 : 63
초록

A valve actuator with an instrument mounting pad and a manifold in a power module and yoke combination for mounting a valve controller instrument without tubing or mounting brackets. A cover encloses the feedback linkage between the actuator and instrument. The actuator includes a second instrument mounting pad and manifold so the power module is reversible to accommodate fail-safe opened or fail-safe closed valve conditions. A valve actuator and instrument combination is no higher than the actuator alone.

대표
청구항

[ It is claimed:] [1.] In an actuator for operating a control element used to regulate the flow of fluid through a fluid control valve in response to a control valve positioning instrument, said actuator including a pair of coaxially aligned members, one movable external member of said pair externally mounted with respect to a fixed internal member of said pair and axially movable with respect to the fixed internal member, said members having adjacent ends, wherein a chamber is defined between said adjacent ends for moving said one movable external membe...

이 특허에 인용된 특허 (63)

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  54. Loth William D. (Agars Plough ; Margery Lane Lower Kingswood ; Surrey ; KT20 7BP GB2) Dowdall Dennis S. (31 Arundel Avenue Morden ; Surrey ; SM4 4DR GB2). Subsea control systems and apparatus. USP1994105357999.
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  60. Takeuchi Hiroo (Asashina JPX) Hachiro Nobuaki (Ueda JPX) Miyazaki Yoshihisa (Ueda JPX). Vacuum type brake booster device for vehicular use. USP1984034434707.
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