Abstract: A gasket includes an intermediate layer having resilient sealing beads flanked by stopper beads. The three-layer gasket, particularly designed for heavy duty racing engines, provides a relatively robust cross-section in web-areas between cylinder bore apertures. A thin bottom layer includes wrap-around flanged portions extending about cylinder bore edges of the intermediate layer to partially overlap cylinder bore aperture areas of that layer. The flanged portions include a plurality of waves to increase forces to generate the seal. A thin top layer overlies the intermediate layer, as well as the overlapping portions of the bottom layer. In one described embodiment, the overlapping portions are limited to cylinder bore edges between cylinder bores. As a between-engine-overhaul indication of engine health, the top gasket layer is adapted via plastic deformation to form a permanent indentation in an aluminum cylinder head to signal excessive engine operation.

Abstract: A multi-layer steel (MLS) cylinder head gasket includes a unitary stopper layer interposed between mirror image beaded outer layers. A stopper ring situated about the boundary of a combustion opening on the stopper layer is formed by folding over the boundary edge of the stopper layer material. The stopper ring pre-stresses the gasket interface about the combustion opening during securement of a cylinder head to an engine block. The stopper layer includes at least one raised epoxy bead structure, circumferentially and closely surrounding the outside edge of the stopper ring. The epoxy bead acts to spread load, and hence to avoid point loads at the combustion aperture boundary. The epoxy bead is applied to the gasket by screen-printing, and may incorporate a powdered metal for limiting bead resiliency. The bead height is greater than the thickness of the stopper ring, to reduce risk of splitting the stopper layer material.

Abstract: A multi-layered cylinder head gasket for positioning between a cylinder head and a cylinder block of an engine includes a spacer layer and a stopper layer. The stopper layer includes either a wave or rigid stopper positioned at a periphery of an aperture of the stopper layer. A sealing bead is positioned adjacent the stopper. Overall, the stopper layer has a generally uniform thickness. The spacer layer, however, has first and second thicknesses with the second thickness being generally less than the first thickness. The second thickness of the spacer layer mates with the stopper and sealing bead when the stopper layer and spacer layer are joined together. A transition area is positioned between the first and second thicknesses. The variable thickness of the spacer layer permits the gasket to provide generally equal sealing stresses while subjected to variable compression forces.

Abstract: The invention relates to a gasket having at least one metallic layer, in which at least one gasket opening and at least one bead are formed, and in and/or adjacent to the bead a coating is applied as a deformation limiter, which comprises at least one filler and one bonding agent, the mass proportion of the filler being greater than the bonding agent and the filler being present in particle form, and the individual spherical particles having a small surface in relation to the volume of the particle.

Abstract: A cylinder head gasket that includes a body that has holes stamped through it and is then coated with an encapsulant before assembling armor to the body of the gasket. A topcoat is coated over the body and armor. The encapsulant is preferably an epoxy primer and the topcoat is preferably a silicone.

Abstract: A multi-layer metal gasket includes at least on active layer and at least one shim layer having aligned combustion holes. The shim layer has annular portions surrounding the combustion holes and tab portions projecting radially outwardly from the annular portions surrounding the combustion holes. The annular portions underlie associated sealing beads of the active layer. The tab portions each have a radially extending neck region and a set of lateral bend tabs supported at the end of the neck region and projecting laterally outwardly thereof. The bend tabs project through an associated set of laterally spaced mounting windows formed in the active layer and are bent back toward one another to secure the shim layer to the active layer.

Abstract: In order to provide a cylinder head gasket, comprising at least one beaded gasket sheet, which comprises at least one combustion chamber opening and a bead, which may be vertically deformed and surrounds the combustion chamber opening, and at least one deformation limiting means adjacent to the bead, which can be produced simply and with low material usage and which is flexible with respect to the arrangement and configuration of the deformation limiting means, it is proposed that the deformation limiting means comprises at least one deformation limiting element disposed on a deformation limiting sheet of the cylinder head gasket, said element having at least one reinforcement region, which is located at a distance from the combustion chamber opening and is formed by separating a region of the deformation limiting sheet along a separating line and subsequently bending this region out of the plane of the deformation limiting sheet.

Abstract: The present invention relates to a multi-layered steel gasket,for example a cylinder head gasket, having at least one through opening, for example for a combustion chamber of an internal combustion engine, in which at least three active metallic gasket layers are disposed one above the other; beads being formed in at least two gasket layers around the through opening(s); and a first bead-shaped, plastically deformable deformation limiter being disposed in a spacer sheet, which is disposed between these two gasket layers, on the side adjacent to the beads.

Abstract: An MLS cylinder head gasket includes a relatively thick intermediate layer having resilient sealing beads flanked by stopper beads. The stopper beads limit compression of the sealing beads, which surround combustion cylinder bore apertures. The three-layer gasket, particularly designed for heavy duty racing engines, provides a relatively robust cross-section in web-areas between cylinder bore apertures. A thin bottom layer includes wrap-around flanged portions extending about cylinder bore edges of the intermediate layer to partially overlap cylinder bore aperture areas of that layer. A thin top layer overlies the intermediate layer, as well as the overlapping portions of the bottom layer. In one described embodiment, the overlapping portions are limited to cylinder bore edges between cylinder bores. As a between-engine-overhaul indication of engine health, the top gasket layer is adapted via plastic deformation to form a permanent indentation in an aluminum cylinder head to signal excessive engine operation.

Abstract: A metal gasket for an internal combustion engine is formed of a metal plate including a base portion extending substantially throughout an entire area to be sealed, at least one hole formed in the base portion, a curved portion extending from the base portion, and a flange extending from the curved portion and disposed on a part of an upper surface of the base portion. A coating member is deposited on the flange facing the base portion and/or the base portion facing the flange. The coating member is formed of a non-thermoplastic coating material to operate as a surface pressure regulating member between the flange and the base portion to thereby regulate a surface pressure at the flange.

Abstract: A gasket (48, 48?, 48?) and (70) for disposition between a fuel injector (22) and a cylinder head (14) comprises compressible polymer layers (62, 64, 74, 92) and incompressible and flat metal layers (60, 72, 90) sandwiched between the polymer layers. In the embodiments of FIGS. 6-8, a polymer body (80, 96) is disposed radially inwardly of the incompressible layer (72) or layers (90) and includes a bead portion (86) thicker than the total thickness of the incompressible and polymer layers (72), and (74, 90) and (92). The body (80, 96) also includes a recess portion (82-84) having a thickness less than the total thickness to define a recess (88) adjacent the bead portion (86). The bead portion (86) is disposed radially between the recess portion (82-84) and the incompressible layer (72 or 90).

Abstract: A metallic gasket capable of providing a sufficient sealing capability all around a combustion chamber hole and avoiding such problems that the step of a cylinder block supporting the lower end part of a cast-iron sleeve is damaged by the thermal expansion of the sleeve during the operation, the roundness of a bore is impaired, the cast-iron sleeve is sunk, and a pressure leaks between the fastening bolts, wherein the end part of a shim plate (14) on a combustion chamber hole (12) side is disposed on the upper end surface of the cast-iron sleeve (2) radially outside the outer peripheral position (OL1), the end part of the shim plate (14) more distant from the combustion chamber hole (12) is disposed on the combustion chamber hole (12) side from an outside line (OL2) of the water jacket (4) formed in the cylinder block (1), and a part of a full bead (13) is disposed on the upper end surface of the cast-iron sleeve (2).

Abstract: Cylinder head gasket with a gasket plate having at least one combustion chamber opening and comprising at least two sheet metal layers, a first one of which is provided with at least one bead which is elastically deformable in its height and encloses the combustion chamber opening, and a second one of which is provided with at least one deformation delimiting device delimiting deformation of the bead and surrounding the combustion chamber opening; in order to achieve as rigid a delimitation of the deformation as possible, the original second sheet metal layer is formed by a steel sheet which is plastically deformable by cold flow pressing, and in a plan view of the second sheet metal layer the deformation delimiting device forms a two-dimensional pattern of discrete, cup-like depressions, with the total volume of the depressions stamped by flow pressing being approximately equal to the total volume of the elevations formed by the material of the second sheet metal layer that is displaced during the stamping o

Abstract: A multi-layered cylinder head gasket for positioning between a cylinder head and a cylinder block of an engine includes upper and lower compression layers and a stopper layer. The compression layers and stopper layer all include apertures that mate together to define a peripheral edge. The stopper layer further includes a folded portion and a main body portion. The folded portion has a plurality of waves that contact the main body portion of the stopper layer to form a stopper when folded over. The stopper is positioned at the peripheral edge of the mated aperture. The waves deform under high compression loads generated by the joining of the cylinder head and the cylinder block. The deformation balances the stresses generated by the compression loads around the mated aperture.

Abstract: A compression limiter formed by a roll forming process includes a substantially cylindrical body portion and a plurality of feet. A plurality of notches are stamped along a lower edge of a flat sheet of stock and bent to form the plurality of feet. The flat sheet of stock is then rolled to form the compression limiter. In the preferred embodiment, the compression limiter is formed of a high carbon steel. The plurality of feet of the compression limiter transmit the bolt load of a fastener attaching a plastic intake manifold to a component. In an alternative embodiment, an angled portion attaches each foot to the body of the compression limiter which accommodates for variations in the height of the plastic intake manifold.

Abstract: A metal cylinder head gasket for combustion engines with inserted cylinder linings has at least two functional plates with openings according to the combustion powered machines' combustion chambers that are encircled by full beads of the functional plates. On the first functional plate, a pressure limiter for the full bead is positioned on the side facing the second functional plate. An elastic feature is associated with the second functional plate in line with the pressure limiter.

Abstract: A multi-layered cylinder head gasket for positioning between a cylinder head and a cylinder block of an engine includes a spacer layer and a stopper layer. The stopper layer includes either a wave or rigid stopper positioned at a periphery of an aperture of the stopper layer. A sealing bead is positioned adjacent the stopper. Overall, the stopper layer has a generally uniform thickness. The spacer layer, however, has first and second thicknesses with the second thickness being generally less than the first thickness. The second thickness of the spacer layer mates with the stopper and sealing bead when the stopper layer and spacer layer are joined together. A transition area is positioned between the first and second thicknesses. The variable thickness of the spacer layer permits the gasket to provide generally equal sealing stresses while subjected to variable compression forces.

Abstract: In a cylinder head gasket with a metallic gasket plate comprising a combustion chamber opening enclosed by a bead which is elastically deformable in its height, and a stopper surrounding the combustion chamber opening and delimiting the deformation of the bead, the stopper being formed by elevations of a sheet metal layer of the gasket plate which are obtained by deformation * of this sheet metal layer, in order to obtain such a stopper which is resistant to deformation, the stopper is designed such that in sections through the sheet metal layer along circular cylindrical surfaces coaxial with the combustion chamber opening the stopper respectively comprises a row of discrete elevations following one another in a circumferential direction of the combustion chamber opening and corresponding depressions located directly opposite these elevations in the sheet metal layer, and in a plan view of the sheet metal layer in the area of the stopper, the total area occupied by the elevations is at least half of the tota

Abstract: In a cylinder head gasket with a metallic gasket plate comprising a combustion chamber opening enclosed by a bead which is elastically deformable in its height, and a stopper surrounding the combustion chamber opening and delimiting the deformation of the bead, the stopper being formed by elevations of a sheet metal layer of the gasket plate which are obtained by deformation of this sheet metal layer, in order to obtain such a stopper which is resistant to deformation, the stopper is designed such that in sections through the sheet metal layer along circular cylindrical surfaces coaxial with the combustion chamber opening the stopper respectively comprises a row of discrete elevations following one another in a circumferential direction of the combustion chamber opening and corresponding depressions located directly opposite these elevations in the sheet metal layer, and in a plan view of the sheet metal layer in the area of the stopper, the total area occupied by the elevations is at least half of the total

Abstract: A metallic gasket comprising a base plate having a first thickness-increased portion 3 formed at a peripheral edge on a combustion chamber opening 3 side of a base plate, and a first seal line SL1 and a second seal line SL2 arranged on the outer side of said first thickness-increased portion 3. No openings other than a cooling water hole 8 exist between said two seal lines. Beads formed along said seal lines SL 1 and SL2 each consist of a convex metal bead raised only upward from an upper surface of said base plate and a rubber bead made of an elastic sealing material fixed to a convex portion and a concave portion of said metal bead. This structure of said metallic gasket can improve a processing accuracy of said metal bead and also enhance cooling effects on said metallic gasket itself and said joint surfaces of an engine, between which said metallic gasket is disposed.

Abstract: In a cylinder head gasket, a base plate forming the gasket is formed of a first metallic material, and a grommet is provided around a hole for a cylinder bore and formed of a second metallic material different from the first metallic material. The grommet and the base plate are connected by welding. Accordingly, the grommet formed of the optimum material can be provided around the hole for the cylinder bore, and the base plate can be formed of the optimum material. Thus, the cylinder head gasket has a good sealing ability and excellent durability.

Abstract: A flat gasket for a reciprocating engine or a driven machine includes at least two laminated metal sheets 0.05 to 0.5 mm thick which are provided with a coating of an elastomer film at least on the side facing outward and have an edge area, formed by the outer contour and/or at least one cylinder bore and/or a water and/or oil passage in the cylinder head, adjacent to at least one peripheral first bead of one of the metal sheets, the second metal sheet bridging the first bead, both metal sheets being joined together permanently on both sides of the first bead.

Abstract: A seal arrangement for providing a seal between a nuclear reactor in-core instrument housing and an instrument contained within the housing includes a lower seal assembly surrounding an outer portion of the in-core instrument housing, an upper seal assembly surrounding an outer portion of the in-core instrument, a seal housing enclosing the lower and upper seal assemblies, and lower and upper compression assemblies positioned on respective ends of the seal housing. The compression assemblies each include a drive nut and a compression collar. The compression collars engage and apply an axial load on the seal assemblies to maintain a reliable seal between the seal housing and the outer portion of the in-core instrument housing, and between the seal housing and the outer portion of the in-core instrument.

Abstract: A cylinder head gasket includes a metal base plate; a combustion chamber opening provided in the base plate; a metal overlay surrounding the opening; and a weld bonding the overlay to the base plate. The weld is composed of a plurality of weld dots lying in a single row and being equidistantly spaced from one another. Each weld dot has a first diameter on a surface of the base plate and a second diameter on a surface of the overlay. The first diameter is smaller than the second diameter, and a distance between center points of adjoining the weld dots is greater than the second diameter of either of the adjoining weld dots.

Abstract: The invention concerns a cylinder head gasket for sealing the region between cylinder head and a cylinder block having a cylinder liner of an internal combustion engine, comprised of at least one sealing sheet that has at least one combustion chamber passage opening and a combustion chamber crimp running around the combustion chamber passage opening, where a stop serving as a path limiter for the combustion chamber crimp is provided on the side of the combustion chamber crimp facing away from the combustion.chamber passage opening and which stop encloses the combustion chamber crimp laterally, where at least one sealing sheet has at least two concentric combustion chamber crimps, which are enclosed laterally by the stop.

Abstract: The invention relates to the application of a projection to a metal layer of a metallic cylinder-head gasket for an internal-combustion engine having at least one elastic metal sheet, which is provided with one opening or a plurality of adjacent openings depending on the number of combustion chambers of the internal-combustion engine, a bead being provided in the at least one elastic metal sheet around each opening, at a distance from the latter, so that a straight section of sheet metal is left clear in the region of the edge of the opening, for which bead a spring travel limiter or stopper, which runs coaxially with respect to the bead and is formed by the projection, is provided, the projection being produced from a mixture which contains a plastic with a high mineral filler content. A mixture of an elastomer in particular with a filler which has been surface-treated by means of a silane is used.

Abstract: A cylinder head gasket includes a pair of first and second gasket substrates. The gasket substrates are each formed with a first and a second projection which project in opposite directions, with a clearance therebetween. According to a first aspect of the invention, each projection undergoes a plastic deformation toward the clearance defined between them when the gasket substrates are held sandwiched between a cylinder head and a cylinder block, each projection undergoing a magnitude of plastic deformation which is greater or lesser in accordance with the magnitude of a surface pressure therebetween. According to a second aspect of the invention, each projection is formed with a radially central part which projects toward the radially central part of the other projection and which is in close contact with each other continuously in the circumferential direction.

Abstract: The invention relates to a flat gasket comprising at least one metallic layer, in which at least one continuous opening is made, whereby the or at least one metallic layer (1) is provided, at least in areas, in the shape of an undulated and/or serrated profiling (2) around the continuous opening(s).

Abstract: The invention refers to gaskets suitable for usage in internal combustion engines. The gaskets according to the invention comprise at least one metal layer, the metal layer having one or several openings in accordance with the number and location of the combustion chambers, and, if present, coolant and lubricant passageways of the internal combustion engine, and a metal ring located around the combustion chamber opening(s), the metal ring being laminated on the metal layer and joined to the latter over a plastic layer. The plastic layer provides the gasket in the region of the metal ring with plastic, plastic/elastic or elastic characteristics. Furthermore the invention refers to a method for manufacturing the gasket according to the invention.

Abstract: A valve cover gasket has a perforated central core of metal including protrusions extending from planar sides of the core. Silk screened on each side of the core is a silicone foam rubber layer adapted to replace traditional cork gasket structures used for same purpose. The silicone rubber layers include a foaming agent that causes the material to expand during an oven-curing period. The amount of expansion of the silicone rubber coating is up to three times the thickness of the coating originally applied. As disclosed, the oven cure is for approximately 10 minutes at 300 degrees Fahrenheit. The protrusions prevent the silicone rubber material from being fully compressed; the protrusions are designed not to flatten under normal gasket compression loads. The peaks of the protrusions act as compression loads stops to limit amount of permissible compression of the silicone rubber layers.

Abstract: The invention relates to a multi-layered steel gasket, for example, a cylinder head gasket, with at least one through opening (7,7′), for example, for the combustion chamber of an internal combustion engine, with at least three active metallic sealing layers (2, 2′, 2″) arranged one on the other. In at least two sealing layers (2, 2″) beads (3, 3″) are formed around the through openings and in a spacer sheet (6) arranged between the both sealing layers a bead-shaped plastically deformable deformation limiter (4) is arranged on the side adjacent to the beads.

Abstract: In order to provide a cylinder head gasket, comprising at least one gasket sheet, with at least one combustion chamber opening and a combustion chamber bead, the height of which may be elastically deformed and surrounds the combustion chamber opening, and at least one deformation limiting means limiting the deformation of the combustion chamber bead, wherein the deformation limiting means assures adequate protection of the combustion chamber bead and adequate sealing surface pressure over a wide range of operating conditions of the engine, it is proposed that the cylinder head gasket comprises a compensation means which comprises at least one compensation element, the height of which varies essentially reversibly when the operating status of the engine changes, and which at least partially supports both the combustion chamber bead and the deformation limiting means.

Abstract: The invention pertains to a cylinder head gasket (1) for sealing a region between the cylinder head and the cylinder block of a combustion engine, comprising at least one sealing plate (2) that features several adjacent combustion chamber passages (3, 4) and a corresponding combustion chamber bead (5) running around the combustion chamber passage (3), wherein there is a stopper (6) that acts as a displacement limiter for the combustion chamber bead, wherein the stopper is interrupted in the region (10) between two combustion chamber passages (3, 4) and extends essentially over the entire area of the sealing plate (2) where there are no openings.

Abstract: A multi-layer steel cylinder head gasket includes a spacer layer between two beaded mirror image outer layers. A wire ring stopper extends about the boundary of a combustion opening in the stopper layer; the ring is radially spaced from the mirror image beaded outer layer extremities. The ring is covered by a flange folded thereover; the flange extends radially outwardly to overlie the boundary edge of the stopper layer at the combustion opening. The stopper ring pre-stresses the gasket interface at the combustion opening upon securement of a cylinder head to an engine block. Because the stopper ring is spaced from the beaded outer layers, the stresses imposed on the wire ring are decoupled from the beaded outer layers, and lower incidences of bead cracking are realized. In addition, the wire ring diameter is greater than the thickness of the stopper layer, reducing unnecessary compression loads on the stopper layer.

Abstract: A method of modifying a combustion seal of a diesel engine fitted with a cylinder liner having an annular top sealing ridge which is damaged or mispositioned so as to interrupt the combustion seal is provided. The method includes exposing the sealing ridge and, without removing the liner from the engine, clamping and plastically deforming a combustion seal shim against the sealing ridge to perfect the combustion seal.

Abstract: A metal gasket assembly has a gasket plate and an annular grommet. The gasket plate is formed with an opening having opposing surfaces adjacent the opening to define a predetermined fixed thickness of a plate. The annular grommet has an elastically deformable U-shaped body. The U-shaped body has legs presenting outer sealing surfaces defining an initial undeformed thickness that is greater than the thickness of the gasket plate. The opening formed in the gasket plate receives the grommet. A compressive force applied in a generally perpendicular direction to the opposing surfaces of the gasket plate deform the legs of the body to a reduced thickness corresponding substantially to the thickness of the gasket plate. When the compressive force is reduced with changes in operating conditions, the legs of the grommet return toward their original undeformed thickness to maintain a seal.

Abstract: A metal gasket is proposed, especially a cylinder head gasket for a combustion engine, which comprises a sealing plate having a combustion chamber through-hole, a deformation-limiting device lying adjacent to the combustion chamber through-hole and respectively one top and one bottom layer. The deformation-limiting device is configured as a symmetrical bead in relation to the top and bottom layers. A protrusion preferably provided with a radius is orientated towards one of the top and bottom layers and opposite thereto a depression facing the other of the top and bottom layers is provided which is surrounded by two raised portions projecting opposite the surface of the sealing plate. A filling is accommodated in the depression.

Abstract: In order to provide a cylinder head gasket, comprising at least one beaded gasket sheet, which comprises at least one combustion chamber opening and a bead, which may be vertically deformed and surrounds the combustion chamber opening, and at least one deformation limiting means adjacent to the bead, which can be produced simply and with low material usage and which is flexible with respect to the arrangement and configuration of the deformation limiting means, it is proposed that the deformation limiting means comprises at least one deformation limiting element disposed on a deformation limiting sheet of the cylinder head gasket, said element having at least one reinforcement region, which is located at a distance from the combustion chamber opening and is formed by separating a region of the deformation limiting sheet along a separating line and subsequently bending this region out of the plane of the deformation limiting sheet.

Abstract: Flat gasket for sealing a sealing gap between sealing surfaces of machine components which are pressable against the flat gasket, the flat gasket having a gasket plate formed by several sheet metal layers and provided with at least one elastomeric sealing element in an area serving to seal a sealing gap area in which the component sealing surfaces lead to a locally varying sealing surface pressure at the flat gasket, the sealing element being arranged on a first one of the sheet metal layers and, in the mounted state of the flat gasket, extending through a cutout in a second sheet metal layer forming a first one of the main surfaces of the gasket plate; in order that the sealing element can already be applied by the gasket manufacturer, but, nevertheless, is protected against damage in the course of assembly of the machine components, the gasket is so designed that the sealing element is in the form of a sealing element formed from a material which is applied to the first sheet metal layer and is curable in s

Abstract: A cylinder head gasket for an internal combustion engine is formed by a first metal plate extending substantially throughout an entire area to be sealed and having a first hole corresponding to a hole of the engine, and second and third metal plates disposed to sandwich the first plate and having second and third holes formed in the respective second and third plates corresponding to the first hole. First and second beads are formed in the respective second and third plates to extend toward the first metal plate. A first resin coating is deposited on at least one side of the first metal plate at an inner portion relative to the first bead, and a second resin coating is deposited on at least one side of the first metal plate at an outer portion relative to the first bead without extending over an entire surface thereof. The second resin coating has a thickness at most equal to that of the first resin coating. The surface pressure around the hole can be adjusted precisely.

Abstract: The invention concerns a cylinder head gasket designed to be arranged between a cylinder block and a cylinder head with at least an orifice (12) corresponding to a combustion chamber and orifices (14) allowing through means for fixing said cylinder head on said cylinder block, comprising a stack of at least a metal plate (16, 20) including a rib (18, 22) arranged around the orifice corresponding to the combustion chamber, and at least a metal plate (24) serving as wedge, and a wedge, called stopper (26), designed to limit the compression of the rib (18). The invention is characterised in that the stopper (26) and the metal plate (24) serving as wedge are arranged edge-to-edge.

Abstract: A gasket for sealing an intake manifold of an internal combustion engine, includes a plastic body defining substantially co-planar surfaces that define top and bottom surfaces of the gasket. Each of a plurality of air intake apertures includes an interiorly molded circumferential elastomeric edge bead. Each aperture edge includes a circumferential array of small openings for mechanical securement of the elastomeric bead to the plastic carrier, and each opening fills with elastomer upon the overmolding of the bead to the edge during manufacture. The gasket also includes primary and secondary compression limiters, formed of powdered metal in described embodiment, located immediately adjacent bolt holes and symmetrically between air intake apertures, respectively. Finally, the gasket includes flexible locator grommets for assuring positive alignment between the cylinder head and intake manifold.

Abstract: A monolayer metal gasket is disclosed, which may be kept against deformation around a bolt hole and further made stable in sealing stress around a gas hole between mating surfaces of confronting components. A first extra thickness around the gas hole is provided by turning back a part of a metallic sheet on a major flat of the metallic sheet, with leaving a space open between them to form a folded construction having elasticity. A second extra thickness around a bolt hole is a closely layered construction of nearly rigid body little to be deformed. When the monolayer metal gasket is squeezed between the mating surfaces of the confronting components, a clearance between the mating surfaces may be regulated to a preselected distance by virtue of the second extra thickness that is little to be deformed.

Abstract: A cylinder head gasket is used for an internal combustion engine with at least three cylinder bores. The gasket is formed of a metal plate extending substantially throughout an entire area to be sealed, and a reinforce coating. The metal plate includes two end holes, at least one inner hole sandwiched between the two end holes, and beads surrounding the respective holes. The two end holes and at least one inner hole are arranged linearly to correspond to the cylinder bores of the engine. The reinforce coating is deposited around the peripheral portion of the at least one inner hole so that sealing pressures are formed substantially equally around the two end holes and at least one inner hole. Other reinforce coatings may be deposited around the peripheral portions of the end holes.

Abstract: A cylinder head gasket comprises a plate, an annular groove formed to surround a combustion chamber opening formed in the plate, a metallic shim fitted into the annular groove, and a full bead located outward of the shim and projecting in the same direction as the shim. The shim is mounted on the plate by an intermittent welding. With this construction, the manufacturing cost can be reduced in comparison to the use of a conventional continuous welding or multi-layer welding. In addition, the thermal deformation of the shim and the plate itself is reduced as compared with when continuous welding or multi-layer welding is used, thus allowing the sealing capability to be improved. In addition, the cylinder head gasket is preferred for use in an engine of a higher combustion temperature than the combustion temperature when the shim is formed of a resinous material.

Abstract: Process for manufacturing a cylinder head gasket with a gasket plate which comprises several sheet metal layers and with a metallic spacer ring which surrounds a combustion chamber through-opening of the cylinder head gasket and is welded by a ring-shaped weld seam to one of the sheet metal layers; to improve the sealing ability of the cylinder head gasket around the combustion chamber through-opening and to shorten the welding time, the spacer ring is secured in a gas-tight manner by electric pulse welding to the sheet metal layer carrying it by a continuous, ring-shaped, uniform weld seam closed within itself by the spacer ring and the sheet metal layer being clamped between a first electrode resting against the spacer ring and a second electrode resting against the sheet metal layer and a current pulse being passed through a ring-shaped, sharp edge-like or bead-like contact projection of the one electrode pressed against one of the parts to be welded to one another, through the parts to be welded to one an

Abstract: A cylinder head gasket for an internal combustion engine includes a first metal plate having first holes and first beads formed around the respective first holes, and a second metal plate disposed under the first metal plate and having a second bead extending toward the first metal plate. A distance between the first and second beads or a width of at least one of the first and second beads at a high heat load portion of the cylinder bore is formed to be greater than a distance between the first and second beads or a width of at least one of the first and second beads at a low heat load portion of the cylinder bore to thereby reduce a surface pressure at the high heat load portion.

Abstract: A metal gasket is formed of a metal base plate for sealing between two members. The metal gasket has a bead around a cylinder bore and a bead around a fluid hole on the metal base plate. Coatings are applied on both surfaces of the beads, respectively. When the metal gasket is tightened, strong sealing surface pressures are locally generated at sealing line portions of the beads. The coatings are applied only on other portions except for the sealing line portions.

Abstract: A metal gasket is formed of a metal base plate for sealing between two members. The metal gasket has a bead around a cylinder bore and a bead around a fluid hole. The coatings are applied on both surfaces of the beads, respectively. When the metal gasket is tightened, strong sealing surface pressures are locally generated at sealing line portions. The thicknesses of the coatings at the sealing line portions are formed to be thinner than those of the other portions.

Abstract: A metal gasket seals two engine members of an internal combustion engine. The metal gasket includes a metal gasket member extending substantially throughout an entire area of the engine members and has two surfaces to contact the engine members. At least two seal coatings are coated on the two surfaces of the gasket member to constitute sealing lines on the surfaces of the gasket member. One of the sealing lines on one surface of the metal plate is shifted from the other of the sealing lines on the other surface of the metal plate. Micro coatings are coated on the two surfaces of the gasket member. The thickness of the micro coating is less than that of the seal coating.