Method and apparatus for forming a ventable seal

Details Method and apparatus for forming a ventable seal Method and apparatus for forming a ventable seal

1989-07-13

1991-07-09

Nicholson, Eric K.

Pipe joints or couplings

With fluid pressure seal

Wedged gasket

285334, 285924, 285351, F16L 1504

Patent

active

050299069

ABSTRACT:
A deformable sealing member is disposed between two surfaces such that a space is provided to at least one side of such sealing member. A smaller space may be provided to a second side of the sealing member. The sealing member is conformed to contact both surfaces. A pressure coming from the direction of the greater space between the two surfaces will cause the sealing member to deform into greater compliance with the two surfaces. However, should pressure reverse and approach the seal from the opposite direction the seal will distort into the area of greater space thereby causing the seal to break contact with one of the surfaces and for such pressure to vent past the seal.

REFERENCES:
patent: 3489436 (1970-01-01), McClure
patent: 4253687 (1981-03-01), Maples
patent: 4712815 (1987-12-01), Reeves
patent: 4786090 (1988-11-01), Mott
API Publication, pp. 385, 387, 390.

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