Hydraulic flange seal clamp

Details Hydraulic flange seal clamp Hydraulic flange seal clamp

1987-12-15

1989-03-21

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Test plugs

138 89, 73 496, F16L 5510

Patent

active

048134562

ABSTRACT:
A hydraulic flange seal clamp for sealing a flanged valve opening, to permit hydrostatic pressure testing of the valve, includes a pivotable connection structure between a seal member which overlies and seals the flanged opening, and a moveable piston which causes the seal member to assume the desired sealing relationship with the flanged valve opening.

REFERENCES:
patent: 165562 (1875-07-01), Gravelius
patent: 405054 (1969-06-01), Sexton
patent: 522137 (1894-06-01), Walker
patent: 724396 (1903-03-01), Pflugh
patent: 810390 (1906-01-01), Bode
patent: 1174055 (1916-03-01), Carlson
patent: 1264367 (1918-04-01), Conard
patent: 1649994 (1927-11-01), Thal
patent: 1701876 (1929-02-01), Fleming
patent: 2238257 (1941-04-01), Fischer
patent: 2477663 (1949-08-01), Sexton
patent: 3460376 (1969-08-01), Kemp
patent: 3672403 (1972-06-01), Wilson et al.
patent: 3914966 (1975-10-01), Bello
patent: 4351446 (1982-09-01), Madden
patent: 4719687 (1988-01-01), Nammy

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