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"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Choke for controlling the flow of drilling mud

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-005/00   
미국특허분류(USC) 137/238 ; 137/32902 ; 137/32903 ; 137/32904
출원번호 US-0018508 (1979-03-08)
발명자 / 주소
인용정보 피인용 횟수 : 100  인용 특허 : 0
초록

This apparatus disclosed in its preferred form is a choke for controlling the flow of drilling mud which is highly abrasive. The abrasive drilling mud is introduced through a lateral port and an elongate, tubular body. In the tubular body, a fluid actuated, double acting piston is forced to a choke control position. The piston has appended to it a centralized, tubular extension which receives a sleeve of wear resistant material. The sleeve is positioned in a circular chamber communicated to the lateral port where the drilling mud is introduced. It travel...

대표
청구항

A choke for controlling the flow of mud which comprises: a hollow valve body having a passage therethrough; a valve seat having an encircling, tapered face surrounding an axial passage past said tapered face for directing mud flow past said tapered face within said valve body; an encircling valve seat shoulder axially spaced from said tapered face lying in a plane perpendicular to the flow through said axial passage; a valve element having an external tapered face conforming to said valve seat tapered face which said valve element, on movement, moves fro...

이 특허를 인용한 특허 피인용횟수: 100

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