Pipe joints or couplings – Pipe to discreet nipple or sleeve to plate – Nipple threaded to plate
Patent
1977-08-12
1978-12-19
Smith, Robert I.
Pipe joints or couplings
Pipe to discreet nipple or sleeve to plate
Nipple threaded to plate
285147, 285346, F16L 3900
Patent
active
041303040
ABSTRACT:
An improved seal assembly for a well head including a ring-shaped seal body positioned in the tubing head, a tubular coupling formed to the seal body and adapted to connect between adjacent portions of inner tubing, a lower seal ring positioned in the tubing head above the seal body and surrouding the coupling, a pliable rubber gasket positioned in the tubing head above the lower seal ring and surrounding the coupling, and an upper seal ring positioned in the tubing head above the gasket and surrounding the coupling. The seal body has a central circular opening and a radial slot for a cable. The lower seal ring has an inner circular section and an outer circular section split into an arcuate outer front section, and an arcuate outer rear section. The outer section has a semi-circular opening along the inner edge. The inner section is provided with a semi-circular opening on the outer edge which mates with the semi-circular opening on the outer section to form a passageway for the cable. The rubber gasket has a circular hole and a slit leading to the hole. The upper seal ring has an inner circular section and an outer circular section split into an arcuate outer front section and an arcuate outer rear section. The outer section has a semi-circular opening along the inner edge which mates with a semi-circular opening on the outer edge of the inner circular section to form a passageway for the cable. To assemble the device, the members are clamped together, locking the members in place, compressing the gasket and forming a liquid-tight and gas-tight seal.
REFERENCES:
patent: 2001946 (1935-05-01), Tschappat
patent: 2830665 (1958-04-01), Burns et al.
patent: 2842209 (1958-07-01), Gibson
patent: 3185505 (1965-05-01), Lanmon
patent: 3291490 (1966-12-01), Balmer
patent: 3329448 (1967-07-01), Allen
patent: 3471178 (1969-10-01), Roe
patent: 3806168 (1974-04-01), McGee et al.
patent: 3994517 (1976-11-01), Carmichael et al.
Don R. Hinderliter, Inc.
Dorman William S.
Smith Robert I.
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