Laminated metal gasket for a cylinder block of an engine

Details Laminated metal gasket for a cylinder block of an engine Laminated metal gasket for a cylinder block of an engine

1997-06-19

1999-03-09

Knight, Anthony

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal between parts of internal combustion engine

277595, F16J 1002

Patent

active

058790110

ABSTRACT:
This metal gasket comprises a beaded base plate, an intermediate plate and a thin plate, and secures a stable long-standing sealing performance with a face-to-face pressure balance kept properly. This metal gasket is provided with full beads on the beaded base plate, stopper beads on the intermediate plate, and folded portions, which hold the edge portions of bores of the intermediate plate, and full beads, which are laminated on the stopper beads on the intermediate plate, on the thin plate. The folded portions are formed so that they are not laminated on the stopper beads when the metal gasket is in practical use, i.e., when the folded portions are in a compressed condition. The folded portions and stopper beads display a stopper function of preventing the full compression of the full beads on the beaded base plate, and a sealing function of preventing the entry of a combustion gas into the clearances defined by the full beads. The face-to-face pressure occurring on the folded portions, stopper beads and full beads can be controlled properly, and the face-to-face pressure balance can be maintained properly.

REFERENCES:
patent: 4896891 (1990-01-01), Udagawa
patent: 5286039 (1994-02-01), Kawaguchi et al.
patent: 5586776 (1996-12-01), Kubouchi et al.
patent: 5609345 (1997-03-01), Miura et al.
patent: 5791659 (1998-08-01), Takada et al.
Patent abstract of Japan 08-061506, published 08 Mar. 1996.

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