Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1995-03-27
1996-10-01
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
F16J 1508
Patent
active
055606237
ABSTRACT:
The present invention relates to a metal gasket for installation into a gap between a cylinder head and a cylinder block of a multi-cylinder engine by bolt fasteners. The gasket includes a base plate and a supplementary plate. The base plate has a plurality of combustion chamber openings, a plane plate portion surrounding each of the openings, and a convex cross-sectional shaped bead surrounding the plane plate portion and providing an inner and an outer sealing line on a concave side of the bead on the side of the opening and on the far side of the opening, respectively. The supplementary plate is overlapped with the concave side of the base plate and extended from a periphery of each opening to an area of the bead passing through the plane flange portion and the inner sealing line. The supplementary plate, however, is not extended to the outer sealing line. In this way, the supplementary plate forms a portion increased in thickness. Only the inner sealing line of two sealing lines overlaps with the portion which is increased in thickness having relatively wide width. The inner sealing line provides a good sealing function to seal the gap around the combustion chamber opening where the gap clearance is larger than that in the portion near the bolt fastening portion and, therefore, provides good durability during the engine operation.
REFERENCES:
patent: 4711456 (1987-12-01), Udagawa
patent: 4721315 (1988-01-01), Ueta
patent: 4815750 (1989-03-01), Yoshino
patent: 4861046 (1989-08-01), Udagawa
patent: 4896891 (1990-01-01), Udagawa
patent: 4898396 (1990-02-01), Udagawa
patent: 4915398 (1990-04-01), Kitagawa
Beres John L.
Cuchlinski Jr. William A.
Kabushiki Kaisha Ket and Ket
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