Hydraulic nuts and bolts

Details Hydraulic nuts and bolts Hydraulic nuts and bolts

F - Mech Eng,Light,Heat,Weapons

16

B

85/4

F16B 31/02 (2006.01) F16B 31/04 (2006.01)

Patent

CA 1250767

Abstract Improvements in hydraulic nuts and bolts A hydraulically operable nut or bolt head for tensioning bolts or studs in an assembly to be clamped, and suitable for high temperature use, in which an annular piston is located in an annular recess in the underside of the nut or bolt head, and a metal capsule is located between the piston and the bottom of the recess to serve as a sealing means. In use hydraulic fluid is admitted to the inside of the capsule, or into the space between the capsule and the bottom of the recess in order to move the piston away from the bottom of the recess and the nut or bolt head away from an assembly to be clamped, in order to tension the bolt or stud.

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