Metal gasket

Details Metal gasket Metal gasket

2005-06-14

2005-06-14

Pickard, Alison (Department: 3676)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for a pipe, conduit, or cable

C277S647000, C277S644000, C277S606000

Reexamination Certificate

active

06905125

ABSTRACT:
An annular-shaped metal gasket, which can reduce a tightening force necessary to a seal and easily manage the manufacturability and the characteristics thereof, the metal gasket, in an annular-shaped metal gasket having a cross section provided with an outer circumferential opening and formed in one of a laterally U-shape, voids are formed to the innermost circumferential portions on the two confronting flat sealing surfaces of the metal gasket that are in contact with opponent surfaces, each void having a width equal to or more than 40% of the central wall thickness t0of a bight section and a height equal to or more than 5% of the height H of the gasket, wherein the cross section of the gasket is formed in a tuning-fork shape. A tightening force necessary to the seal can be reduced by forming the cross section of the metal gasket in the tuning-fork shape and providing the voids with the surfaces of the metal gasket in contact with the opponent surfaces.

REFERENCES:
patent: 3207524 (1965-09-01), Trbovich
patent: 3275335 (1966-09-01), Johnson et al.
patent: 3339948 (1967-09-01), Weitzel
patent: 3595588 (1971-07-01), Rode
patent: 3713660 (1973-01-01), Luthe
patent: 4877272 (1989-10-01), Chevallier et al.
patent: 5354072 (1994-10-01), Nicholson
patent: 6042121 (2000-03-01), Ma et al.
patent: 6357760 (2002-03-01), Doyle
patent: 6409180 (2002-06-01), Spence et al.
patent: 6502833 (2003-01-01), Shibata et al.
patent: 06-056211 (1992-07-01), None
patent: 2003-194225 (2001-12-01), None

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