Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1992-08-20
1994-05-10
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277235B, F16J 1508
Patent
active
053101960
ABSTRACT:
At the portions of the metallic gasket according to the present invention which are around perforations the inner diameter of which is smaller than that of holes for combustion chamber, the thickness of at least the folded portions and the portions of an elastic metallic plate on which these folded portions are laminated are reduced to a level in the range from a level not higher than that of the thickness of said metallic plate to a level not lower than that of a half of the thickness of said metallic plate. These thickness-reduced portions of the metallic plate are bent onto the bead-ridge-carrying side thereof to form folded portions, whereby the thickness of the folded portions is reduced to provide a difference in height between the folded portions and the bead-surrounding portions of the metallic plate. The metallic plate is heat treated after the folding step has been completed, to regulate the hardness of the metallic plate.
REFERENCES:
patent: 3053544 (1992-09-01), Gorsica
patent: 4688809 (1987-08-01), Deppe
patent: 4836562 (1989-06-01), Yoshino
patent: 5092613 (1992-03-01), Udagawa
patent: 5213345 (1993-05-01), Udagawa
patent: 5240261 (1993-08-01), Udagawa et al.
Inoue Kunitoshi
Kawaguchi Shigeru
Kubouchi Kenji
Uemura Hiroshi
Cuchlinski Jr. William A.
Cummings Scott W.
Nippon Gasket Co. Ltd.
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