Locking bearing and actuating apparatus

Details Locking bearing and actuating apparatus Locking bearing and actuating apparatus

F - Mech Eng,Light,Heat,Weapons

15

B

138/87

F15B 15/14 (2006.01) F15B 15/26 (2006.01)

Patent

CA 1173328

ABSTRACT OF THE DISCLOSURE The apparatus comprise a generally tubular outer element, a generally cylindrical inner element disposed there- within and sized relative thereto to provide a generally annular operating space therebetween. An intermediate element is disposed in said operating space and is dimensioned relative thereto to create interference fits with said outer and inner elements and prevent relative movement therebetween. Means are provided to introduce pressurized fluid to the respective element interfaces to expand the outer element within the elastic limit thereof to an extent sufficient to release the interference fits and enable relative outer-inner element movement. Re-locking of the outer and inner elements occurs automatically upon depressurization of the fluid and attendant return of the outer element to its unexpanded conf- iguration. Actuating means to effect relative outer and inner element movement upon apparatus unlocking are also provided, and include means to pressurize the fluid. Apparatus locking by direct outer-inner element interefence fit is also discl- osed in conjunction with said actuating means.

413449

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