Patent ID: 9488031
Filing Date: 2016-11-08
CPC Classification: E21B

Claim Text:
1. A blow out preventer comprising: a housing having a longitudinal axis and being divided into a first housing part and a second housing part; a plurality of fasteners, movement of the first housing part relative to the second housing part being prevented by the plurality of fasteners, each fastener including a shaft which extends through a fastener receiving passage provided in the first housing part into a fastener receiving passage provided in the second housing part; fluid flow passages extending within the housing in a longitudinal direction from the first housing part of the housing to the second housing part of the housing, the fluid flow passages being interspersed between fastener receiving passages in a circumferential direction; and an annular packing element and an actuating part which is movable generally parallel to the longitudinal axis of the blow out preventer to push the packing element into engagement with the first part of the housing, compression of the packing element against the first part of the housing causing the diameter of the space enclosed by the packing element to decrease.