Laminated gasket
AssigneeNippon Gasket Co., Ltd.
InventorsHiroshi Uemura, Kiyoshi Sugimoto, Kazuya Yoshijima
Life of this patent
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Abstract
A laminated gasket is provided, which ensures desired bore sealing surface pressures on the side of a cylinder head and on the side of a cylinder block, which is excellent in sealing ability and durability preferably by virtue of its double sealing function and which has a comparatively simple structure. This gasket has a core plate and elastic plates laminated to both surfaces of the core plate. The core plate has thin-walled portions each surrounding a bore opening and a thick-walled portion extending outwardly from each thin-walled portion. The elastic plates respectively have folded-back portions each of which is formed so as to create, together with a base portion, a clearance around its associated bore opening.
Claims10
A laminated gasket which has a core plate and elastic plates laminated to both surfaces of the core plate,
- wherein the core plate has thin-walled portions each of which surrounds a bore opening and a thick-walled portion extending outwardly from the thin-walled portions, and
- wherein each of the elastic plates has (a) folded-back portions for a first seal, each of which is formed so as to create, together with a base portion, a clearance around its associated bore opening and (b) beads for a second seal, each of which is formed outside its associated folded-back portion.
A laminated gasket which has a core plate and elastic plates laminated to both surfaces of the core plate,
- wherein the core plate has thin-walled portions each of which surrounds a bore opening and a thick-walled portion extending outwardly from the thin-walled portions, and
- wherein each of the elastic plates has (a) folded-back portions for a first seal, each of which is formed so as to create, together with a base portion, a clearance around its associated bore opening and (b) seal portions for a second seal, each of which is made of a soft sealing material and positioned outside its associated folded-back portion.
A laminated gasket which has a core plate and elastic plates laminated to both surfaces of the core plate,
- wherein the core plate has (a) thin-walled portions each of which surrounds a bore opening, (b) a thick-walled portion extending outwardly from the thin-walled portions and (c) seal portions for a second seal, made of a soft sealing material and formed on the thin-walled portions and/or the thick-walled portion, and
- wherein each of the elastic plates has folded-back portions for a first seal, each of which is formed so as to create, together with a base portion, a clearance around its associated bore opening.
Dependencies are inferred from the claim text.