|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||251/63 ; 137/32901 ; 137/32903 ; 137/32906|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 62 인용 특허 : 5|
A back pressure control choke operates to automatically control and maintain a desired back pressure on the fluid passing through the choke. The choke housing has an inlet channel which intersects with an axial bore, part of which bore constitutes the discharge channel. An annular choke seat concentrically arranged in the discharge channel of the axial bore is adapted to receive an annular choke element. The choke element is affixed to a shuttle which is mounted on a fixed mandrel extending into the axial bore of the choke housing. The shuttle is dynamic...
A back pressure control choke comprising: a housing having an inlet channel intersecting with an axial bore, with one end of the axial bore defining a discharge channel for fluid passing through the choke; a choke seat member concentrically mounted within the axial bore between the inlet channel and the discharge channel, the choke seat member having a generally cylindrical internal surface; a mandrel, fixed to the housing, coaxially extending into the axial bore in that portion of the axial bore opposite the discharge channel; a shuttle, slideably mount...