Ram type blowout preventer having improved ram front packings

Details Ram type blowout preventer having improved ram front packings Ram type blowout preventer having improved ram front packings

1991-10-02

1993-01-19

Fox, John C.

Valves and valve actuation

Blow-out preventers

Radial reciprocating ram

277188A, E21B 3306

Patent

active

051801370

ABSTRACT:
There is disclosed a ram type blowout preventer with rams having ram front packings disposed within a recess extending across the front face of each ram body and including a seal strip of elastomeric material, metal plates above and below the strip of elastomeric material, and strips of non-elastomeric, relatively rigid material between the seal strip of elastomeric material and the top and bottom metal plates.

REFERENCES:
patent: 4219204 (1980-08-01), Pippert
patent: 4553730 (1985-11-01), Vicic
patent: 5005802 (1991-04-01), McWharter et al.

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