Stud tensioner for blowout preventer

Details Stud tensioner for blowout preventer Stud tensioner for blowout preventer

1979-06-22

1981-05-19

Jones, Jr., James L.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Tie rod tensioner

81 5738, E21B 1900

Patent

active

042680115

ABSTRACT:
An apparatus for tensioning bonnet studs of a blowout preventer, said apparatus having a body with a pair of recesses and a piston positioned in each recess, each of the pistons having a piston rod extending from the body with a stud and nut receiving recess at the outer end of each piston rod, a pair of tension rods having internal threads at their outer ends of engagement with bonnet studs, means for providing engagement between the body and the tension rods, a passage through the body to the body recesses for application of a pressure fluid to the pistons, the pistons and the tension rods being positioned on the body so that when the piston rods are positioned over two opposite bonnet studs the tension rods engage two other opposite bonnet studs.

REFERENCES:
patent: 3015975 (1962-01-01), Biach

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