Rod locking device

Details Rod locking device Rod locking device

1989-05-30

1990-11-13

Kwon, John T.

Expansible chamber devices

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

Fluid actuated

92 27, 92 19, 92 15, 92165PR, 251 11, 251 12, 251 13, F15B 1526

Patent

active

049693905

ABSTRACT:
A new and improved ram locking apparatus for blowout preventer rams which allows the rams to be locked in the closed position and compensates for wear on the sealing elements of the rams. The device consists of a tubular cross containing a rod extension with a tapered end attached to the ram, a hydraulically reciprocal piston with a wedging surface to coact with the tapered end of the rod extensions and hydraulic fluid ports. The tapered end of the rod and the wedge surface of the piston have serrated surfaces to increase friction between the wedging surfaces and provide a self-locking engagement and thereby provide a small compact apparatus.

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patent: 4840346 (1989-06-01), Adnyana

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