Energized seal for upper termination

Details Energized seal for upper termination Energized seal for upper termination

1984-04-16

1986-05-20

Scanlan, Jr., Richard J.

Pipe joints or couplings

With assembly means or feature

Guide and support

285101, 285108, 285917, F16L 3500, F16L 1700

Patent

active

045896895

ABSTRACT:
A seal assembly has features to seal the junction of two passages. The assembly includes a piston with a seal on its face. The piston has a passage extending through it. Hydraulic fluid applied to an annular cavity moves the piston forwardly and rearwardly independent of fluid pressure in the passage. Once sealed, pressure in the passage acts on the end of the piston to maintain sealing engagement.

REFERENCES:
patent: 3058750 (1962-10-01), Taylor
patent: 3195930 (1965-07-01), Ascherl et al.
patent: 3207524 (1965-09-01), Trbovich
patent: 3291442 (1966-12-01), Cranage
patent: 3701549 (1972-10-01), Koomey et al.
patent: 3841670 (1974-10-01), Bottoms
patent: 4396212 (1983-08-01), Honke
patent: 4403658 (1983-09-01), Watkins
patent: 4411434 (1983-10-01), Lewis
patent: 4476934 (1984-10-01), Regan

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