Systems for actuating a pipe connection

Details Systems for actuating a pipe connection Systems for actuating a pipe connection

2005-10-11

2009-06-23

Hewitt, James M (Department: 3679)

Pipe joints or couplings

With fluid pressure seal

Swivel with flange in socket

C285S096000, C285S100000, C285S106000, C285S272000, C285S920000

Reexamination Certificate

active

07549678

ABSTRACT:
Systems for actuating a pair of pipe flanges to cause the flanges to be sealingly engaged. In one embodiment, a connection includes a first flange, a second flange and a coupling. The first and second flanges have complementary mating surfaces. The coupling engages both the first and second flanges, with the flanges oriented so that their mating surfaces face each other. The coupling movably engages the first flange to form a cavity between the coupling and the flange. When fluid is forced into the cavity, expansion of the cavity moves the first mating surface toward the second mating surface. This is continued until the mating surfaces make contact and a desired amount of pressure is applied between them to create a seal. The pressure of the fluid is distributed evenly through the cavity, so the contact pressure between the mating surfaces of the flanges is also evenly distributed.

REFERENCES:
patent: 1571958 (1926-02-01), Mueller et al.
patent: 2712458 (1955-07-01), Lipson
patent: 3147992 (1964-09-01), Haeber et al.
patent: 3198213 (1965-08-01), Schindel
patent: 4049297 (1977-09-01), Reneau
patent: 4291889 (1981-09-01), Hardcastle
patent: 4877217 (1989-10-01), Peil et al.
patent: 5014598 (1991-05-01), Champagne
patent: 5117743 (1992-06-01), Yuda
patent: 5591098 (1997-01-01), Jones et al.
patent: 6780137 (2004-08-01), Langenfeld

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