Blowout preventer ram lock and locking method

Details Blowout preventer ram lock and locking method Blowout preventer ram lock and locking method

1975-08-19

1977-10-11

Schwadron, Martin P.

Fluid handling

Processes

92 17, 92 24, 92 27, 251 1A, 251 94, E21B 3306

Patent

active

040529959

ABSTRACT:
A new and improved ram lock for blowout preventer rams which permits locking of the ram at multiple and adjustable positions to compensate for wear on sealing elements of blowout preventer rams and increase sealing action of the ram without requiring separate special control lines. Automatic locking of the ram at a desired position, such as in sealing position, is obtained.

REFERENCES:
patent: 2643642 (1953-06-01), Geyer
patent: 3208357 (1965-09-01), Allen et al.
patent: 3242826 (1966-03-01), Smith
patent: 3267818 (1966-08-01), Chambers
patent: 3353455 (1967-11-01), Berry
patent: 3738229 (1973-06-01), Kraft
patent: 3941141 (1976-03-01), Robert
patent: 3983792 (1976-10-01), Furtner

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