Self actuating locking and unlocking arrangement and method...

Details Self actuating locking and unlocking arrangement and method... Self actuating locking and unlocking arrangement and method...

F - Mech Eng,Light,Heat,Weapons

15

B

166/50

F15B 15/26 (2006.01) E21B 34/10 (2006.01)

Patent

CA 1234751

SELF ACTUATING LOCKING AND UNLOCKING ARRANGEMENT AND METHOD FOR RECIPROCATING PISTON TYPE ACTUATORS Abstract of the Disclosure A method and arrangement for reciprocating a piston in a cylinder of a fluid actuated actuator between one and another alternate positions, and using the piston fluid actuator fluid to move a lock member from a first position to a second position to lock the piston when it is moved from one position to its other alternate position. Actuator fluid is communicated to unlock the lock member and to move the piston back to its one position. In another form, the lock member is moved to its first position by the actuator pressure fluid which actuates a valve to communicate actuator fluid pressure from the lock member to the cylinder to move the piston back to its said other position.

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