Valves and valve actuation – Blow-out preventers
Patent
1980-11-10
1982-11-23
Arola, Dave W.
Valves and valve actuation
Blow-out preventers
277111, 285 94, 285269, 285349, 285351, 285 89, 285279, 285341, E21B 3306, E16L 2706
Patent
active
043601863
ABSTRACT:
A Swivel Joint for use on producing wells which are being pumped, having an upper and a lower annular member, in juxtaposition, with a coil spring separating the members, the lower member having a curved external face to receive, in line contact, the inside wall of the retaining member, which is engaged with the upper member, and having a packing chamber and a packing nut having one end extending into said packing chamber, and a grease chamber in said packing nut, and packing members mounted in said packing chamber compressed by one end of said packing nut. A blow out preventer is mounted on the lower member having a collapsible packing retainer in which a flexible packing is mounted, said retainer being maintained normally in inactive position, with means for moving said packing into active position to seal off the annulus between the sucker rod and the inside wall of the lower annular member to permit repacking of the packing gland, or to act as a blowout preventer, said packing retainer retracting the packing material when the activating means is moved to inactive position.
REFERENCES:
patent: 1522226 (1925-01-01), Bowles
patent: 1877696 (1932-09-01), Schellack et al.
patent: 1917742 (1933-07-01), Tinsley
patent: 2175752 (1939-10-01), Gray
patent: 2361811 (1944-10-01), Badger
patent: 2427456 (1947-09-01), Hoy
patent: 2480055 (1949-08-01), Seaton
patent: 2628112 (1953-02-01), Hebard
patent: 3477748 (1967-11-01), Tinsley
Bacon C. Richard
Tinsley William B.
Arola Dave W.
Wyatt Ranseler O.
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