Locking mechanism

Details Locking mechanism Locking mechanism

1978-01-03

1980-02-19

Hershkovitz, Abraham

Expansible chamber devices

With releasable stop or latch means to prevent movement of...

92 20, 92 23, 92 29, F15B 1526

Patent

active

041888600

ABSTRACT:
A locking mechanism for hydraulically actuated devices is disclosed herein. The mechanism includes a slotted lock shaft coaxially mounted with respect to a piston assembly, the piston assembly being disposed in a hydraulic cylinder. The lock shaft has end faces or shoulders which engage a portion of a shaft associated with the piston assembly to lock the piston assembly and the ram shaft in a predetermined position. The lock shaft has a configured surface which cooperates with a configured surface of the piston assembly for unlocking the mechanism. The locking mechanism is described for use with a ram type blowout preventer but can be used with various types of hydraulically actuated devices.

REFERENCES:
patent: 3182565 (1965-05-01), Millard
patent: 3228307 (1966-01-01), Dillard

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