Abstract: A steel laminate gasket of the invention is installed in an internal combustion engine. The gasket comprises a first plate and a second plate situated above the first plate. The first plate includes a base portion extending throughout the entire area of the gasket, a curved portion to define a first hole, and a flange situated above the base portion. A bead is formed on the flange to extend toward the base portion. When the gasket is tightened, the flange extends freely outwardly, so that the first bead can deform at a relatively low pressure. Also, the flange can slide easily relative to the cylinder head or cylinder block.

Abstract: A steel laminate gasket of the invention is situated for an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole corresponding to the hole of the engine and at least one first bead situated around the first hole, a second plate situated under the first plate, and a support device. The size of the support device is smaller than that of the first bead. The support device is situated beneath the first bead so that when the gasket is tightened, the support device abuts against and supports the first bead. As a result, the gasket can provide strong, even and wide sealing pressure.

Abstract: A steel laminate gasket of the invention is installed in an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole therein corresponding to the hole of the engine, and a second plate having at least one second hole. The first plate is provided with a base portion, at least one curved portion adjacent the first hole, and at least one flange situated parallel to the base portion. The base portion, curved portion and flange are integrally formed together. At least one side wall is formed on one of the base portion and the flange adjacent the curved portion to surround the first hole. The thickness between the flange and base portion inside the side wall is greater than the thickness between the flange and base portion outside the side wall so that an embossed portion is formed around the first hole. The second plate is situated adjacent the first plate so that the second plate does not pile the flange of the first plate.

Abstract: A steel laminate gasket of the invention is used for an internal combustion engine having at least one cylinder hole and through hole therein. The gasket comprises a first plate, a second plate and at least one third plate situated between the first and second plates. The first plate is provided with a first sealing device formed around the hole corresponding to the cylinder hole of the engine. The third plate is provided with a hole, the diameter of which is larger than that of the diameter of the first sealing device so that the first sealing device is located inside the hole of the third plate when assembled, and sealing layers formed on both sides of the third plate. The gasket further includes a second device for at least covering the first sealing device, and a third sealing device formed on at least one of the first, second and third plates for sealing around the through hole. Leakage around the cylinder hole and through hole is effectively prevented.

Abstract: A steel laminate gasket of the invention is situated for an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole corresponding to the hole of the engine and at least one first bead situated around the first hole, a second plate situated under the first plate, and a support device. The size of the support device is smaller than that of the first bead. The support device is situated beneath the first bead so that when the gasket is tightened, the support device abuts against and supports the first bead. As a result, the gasket can provide strong, even and wide sealing pressure.

Abstract: A metal plate of the invention is used for a metal gasket. The metal plate comprises a base plate, at least one first bead to surround an area to be sealed, and at least one second bead extending from the first bead. An intersecting portion is formed between the first and second beads. The intersecting portion is provided with a depression extending from a side of a non-high pressure area toward an inside of the intersecting portion to reduce the size of the intersecting portion. As a result, the intersecting portion of the first and second beads can provide surface pressure at least substantially equal to the rest of the portions of the first and second beads without affecting the sealing ability at a high pressure area when the beads are compressed.

Abstract: A steel laminate gasket comprises a first plate having at least one first hole, a second plate situated adjacent to the first plate, and at least one depression formed either on the first plate or the second plate and extending toward the other. The second plate is provided with at least one second hole and a bead extending around the second hole. The bead extends substantially perpendicularly to a horizontal plate of the second plate toward the first plate to abut against the first plate. Height of the depression is substantially the same as or slightly less than that of the bead so that when the first and second plates are connected together by a spot welding at the depression, the first and second plates are maintained substantially parallel to each other.

Abstract: A steel laminate gasket of the invention is used for an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole and a first bead situated adjacent to the first hole to surround the same, and a second plate situated adjacent to the first plate. The second plate is provided with at least one second hole, at least one second bead situated adjacent to the second hole to surround the same, and at least one third bead situated at a predetermined distance away from the second bead. When the first and second plates are assembled together, the first bead faces against the second plate, and second and third beads face against the first plate, wherein the first bead is located between the second and third beads. When the gasket is tightened, the first, second and third beads form a plurality of corrugated beads at selected areas around the hole to securely and widely seal the same.

Abstract: A metal plate used for a metal gasket. The metal plate is provided with a plurality of beads around portions to be sealed. The beads intersect with each other and include at least one intersecting portion. At least one depression is formed at the intersecting portion. As a result, when the beads are compressed, the intersecting portion can provide surface pressure at least substantially equal to the portions of the beads other than the intersecting portion.

Abstract: A steel laminate gasket of the invention is used for an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole and a first bead situated adjacent to the first hole to surround the same, and a second plate having at least one second hole and at least one second bead situated adjacent to the second hole to surround the same. The distance from the second hole to the second bead is different from that from the first hole to the first bead. When the first and second plates are assembled together, the first and second beads face against the second and first plates, respectively. When the gasket is tightened, the first and second beads form a plurality of corrugated beads at selected areas around the hole to securely seal the same.

Abstract: A steel laminate gasket of the invention to be used for an internal combustion engine comprises a first plate and a second plate situated adjacent to the first plate. The first plate is provided with a first base section, first and second openings formed in the first base section and a first sealing structure integrally formed with the first base section around the first opening. The second plate is provided with a second base section placed over the first base section, a third opening formed in the second base section to be situated around the first opening, a fourth opening formed in the second base section, and a second sealing structure integrally formed with the second base section around the fourth opening. When the first and second plates are assembled, the first and second sealing structures do not lay over the second and first plates respectively and seal around holes of the engine.

Abstract: A gasket comprises a main body having at least one opening and a plurality of elastic members provided on at least one of upper and lower surfaces of the main body. The elastic members project outwardly from the upper or lower surface. The characteristics of at least one of the elastic members are different from those of the others. The elastic members surround the opening so that when the gasket is compressed between two parts, the elastic members deform to thereby securely seal around the opening.

Abstract: A method of manufacturing a steel plate for a steel laminate gasket comprises applying a first seal coating consecutively on at least one side of a base plate in the shape substantially the same as that of an actual steel plate for constituting the gasket. After the first seal coating on the base plate is dried, the base plate is pressed or cut to form a plurality of steel plates. Each steel plate has a configuration as in the actual steel plate, an outer surface formed by the first seal coating on the entire one side thereof and a plurality of holes therein. When a steel laminate gasket is formed, the steel plate with the seal coating thereon is stacked with other steel plates so that the seal coating is located between the two steel plates.

Abstract: A steel laminate type cylinder head gasket is installed in an engine with an auxiliary combustion chamber. The gasket comprises a first plate and at least one second plate situated adjacent to the first plate. The first plate is provided with at least one curved first bead situated adjacent to and at a predetermined distance away from a curved outer line corresponding to a part of a contour of a mouth plate situated above the gasket, a second bead situated adjacent to and at a predetermined distance away from an inner line corresponding to a part of a contour of a cylinder bore, and a plurality of third beads disposed at a predetermined distance away from each other. The second bead intercrosses the first bead. The third beads are arranged so that the third beads are in order situated away from the inner line and intercept the first bead.

Abstract: A steel laminate gasket of the invention is installed in an engine with an auxiliary combustion chamber. The gasket comprises a first plate having at least one first sealing area around a cylinder bore and at least one second sealing area adjacent the first sealing area, on which a mouth plate for defining the auxiliary combustion chamber is placed, and at least one second plate situated adjacent to the first plate. The first plate is provided with a plurality of curved beads disposed at a predetermined distance away from each other and situated inside and outside the second sealing area. The beads are formed so that a recovery amount of the bead when pressurized decreases gradually from an inner bead to an outer bead.

Abstract: A steel laminate type cylinder head gasket of the invention is installed in an engine having a cylinder block with a cylinder bore, a cylinder head with an auxiliary combustion chamber, and a mouth plate attached to the cylinder head for defining the auxiliary combustion chamber. The gasket comprises a first plate, and at least one second plate situated adjacent to the first plate. The first plate includes at least one curved first bead having a contour corresponding to a part of the mouth plate, and at least one second bead, the second bead intercrossing an outer end of the first bead and extending at least partly along the cylinder bore. The first plate further includes at least two third beads, each extending between the first and second beads so that the outer end of the first bead is located close to the cylinder bore relative to the third bead.

Abstract: A gasket comprises a main body having at least one opening and a plurality of elastic members provided on at least one of upper and lower surfaces of the main body. The elastic members slightly project outwardly from the upper or lower surface. The elastic members surround the openings so that when the gasket is compressed between two parts, the elastic member deform to thereby securely seal around the opening.

Abstract: In a method of manufacturing a steel laminate gasket, a plurality of steel plates is separately prepared so that each plate is provided with a plurality of holes. Then, at least two kinds of surface pressure regulation plates are separately prepared. The thickness of the two kinds of the surface pressure regulation plates is different. The surface pressure regulation plates are mounted on one of the steel plates at predetermined portions and connected thereonto so that the surface pressure regulation plates do not move relative to the steel plate. The steel plate with the surface pressure regulation plates is assembled with at least another steel plate.

Abstract: A steel laminate gasket is situated between two engine blocks, wherein one of the engine blocks has at least two positioning members for setting a location of the gasket. The gasket comprises at least one first plate having at least two first holes, and a second plate situated adjacent to the first plate and having at least two second holes. The diameter of the first hole is larger than that of the positioning member of the engine block, while the diameter of the second hole is essentially the same as that of the positioning member. The distance between the second holes is essentially the same as that between the two positioning holes. The second holes communicate with the first holes respectively so that the position of the gasket relative to the engine blocks can be determined exactly by the second holes engaging the positioning members of the engine block.

Abstract: A gasket for an internal combustion engine comprises a main seal member formed of a plurality of steel plates stacked together, each steel plate having a plurality of openings corresponding to through holes of the engine and at least one communicating portion situated between the adjacent two openings for providing communication between the two openings, a sealing device having a plurality of cylindrical portions to be situated in the openings of the main seal member and at least one intermediate portion to be situated in the communicating portion of the main seal member, and a covering device for substantially covering the sealing device and securely connecting the same to the main seal member. The openings of the main seal member are slightly larger than the through holes of the engine. The cylindrical portions and intermediate portion are integrally formed together.