Valves and valve actuation – Blow-out preventers
Patent
1983-09-26
1985-03-12
Scott, Samuel
Valves and valve actuation
Blow-out preventers
251 1R, 92128, 92161, 137315, E21B 3306
Patent
active
045040370
ABSTRACT:
Bonnet securing and retracting apparatus for a ram blowout preventer is disclosed. The ram blowout preventer bonnet is retained by two bonnet studs and nuts and by bonnet bolts. Bearings in the bonnet are provided to slide on bonnet studs. To retract the bonnet from the ram blowout preventer housing, the bonnet nuts and bolts are removed, and the bonnet may be slid on the bonnet studs outwardly from the housing. Removable stop pins in the bonnet studs prevent the bonnet from sliding off the studs. After the pins are removed, the bonnet may be completely removed from the housing.
This abstract of the disclosure is neither intended to define the scope of the invention, which is measured by the claims, nor is it intended to limit the invention in any way.
REFERENCES:
patent: 1381437 (1921-06-01), Smith
patent: 2853347 (1958-09-01), Cooper, Jr.
patent: 3538575 (1970-11-01), Roland
patent: 3647174 (1972-03-01), Le Rouax
patent: 3918478 (1975-11-01), Le Rouax
patent: 3925876 (1975-12-01), Curtis
patent: 4437643 (1984-03-01), Brakhage, Jr. et al.
1978, "Official Oil Well Drilling & Production Equipment Catalogue", p. 1219.
Hydril Equipment Catalogue, #812, p. 11.
Beam Clark W.
Crutchfield Mark K.
Flanigan Allen J.
Hydril Company
Scott Samuel
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