Metallic Patents (Class 277/595)
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Publication number: 20080174075Abstract: The invention relates to a cylinder head gasket comprising a gasket unit (10), which has at least one through opening, particularly a combustion chamber opening (12), and which has at least two interacting gasket plies (18, 20, 22) of which one (18, 20) is provided with a flexible bead (26, 28) encircling the through opening, and the other (22) is provided with a device (34) that limits this flexibility. Said device (24) has, on opposite sides (34, 38), alternating recesses (30) and elevations (32) whereby a recess (30) is located, at least partially, opposite an elevation (32).Type: ApplicationFiled: July 6, 2005Publication date: July 24, 2008Applicant: ELRINGKLINGER AGInventors: Armin Diez, Frank Schaible
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Patent number: 7401790Abstract: A seal joint for sealing a fluid is particularly adapted for use in extreme pressure and/or temperature environments. The seal joint includes a first member having a first sealing surface and a first opening therein, and a second member having a second sealing surface and a second opening therein, such that the first opening and the second opening comprise mating openings, and together comprise a fluid passageway. The seal joint also includes a metal gasket sheet located between the first sealing surface and the second sealing surface which has an aperture through the sheet which corresponds to the mating openings. The seal joint also includes a rigid seal which surrounds the perimeter of the aperture and which is attached to the surface of the metal gasket sheet. The rigid seal has a thickness and a width which vary as a function of position along the length of the seal.Type: GrantFiled: January 11, 2005Date of Patent: July 22, 2008Assignee: Federal-Mogul World Wide, Inc.Inventor: Michael S. Sadowski
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Publication number: 20080169615Abstract: To provide a seal layer-transferred metal gasket that can effectively prevent degradation in seal performance due to the wearing and peeling of the coating layer. A head gasket 1 is interposed between a cylinder block 2 and a cylinder head 3. In the metal gasket 1, seal layers 20 and 21 made by laminating a separation layer, a coating layer and an adhesive layer in this order from the bead sheet side is formed at least on the surface of the bead sheet 10 facing the cylinder block 2 and the cylinder head 3, and, in a state where the head gasket 1 is interposed between the cylinder block 2 and the cylinder head 3 and the three objects are closely attached to each other, the adhesive layer is adhered to the seal target members, and at least some portions of the coating layer and adhesive layer are separated from the bead sheet 10 with a boundary at the separation layer and then transferred to the seal areas 4 and 5 of the cylinder block 2 and cylinder head 3.Type: ApplicationFiled: January 11, 2008Publication date: July 17, 2008Applicant: Kokusan Parts Industry Co., Ltd.Inventors: Keisuke Umehara, Masahisa Kumashiro, Takayuki Hikami
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Publication number: 20080164660Abstract: A metal laminate cylinder head gasket includes first and second metal plates laminated together. The first metal plate has a combustion hole, and an asymmetrical bead formed around the combustion hole. The asymmetrical bead has a large radius portion with a width (a) at a side of the combustion hole from a top of the bead, a small radius portion with a width (b) at the other side from the top of the bead, and a smallest radius (R). The second metal plate is laminated at a projecting side of the asymmetrical bead. A relationship between (a) and (b) is (a)>(b), the smallest radius (R) is (R)?0.5 mm, and a relationship between the width (a) and the radius (R) is (a)?2(R).Type: ApplicationFiled: January 4, 2008Publication date: July 10, 2008Applicant: ISHIKAWA GASKET CO., LTD.Inventor: Kishou Yasuda
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Publication number: 20080164659Abstract: A metal gasket is formed of at least two metal plates forming the metal gasket. Each of the two metal plates has a hole to be sealed. A U-shaped ring having an open side and a closed side is situated between the two metal plates such that the open side faces the hole.Type: ApplicationFiled: January 4, 2008Publication date: July 10, 2008Applicant: ISHIKAWA GASKET CO., LTD.Inventor: Yuichi Kinoshita
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Publication number: 20080143055Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.Type: ApplicationFiled: December 13, 2006Publication date: June 19, 2008Applicant: SKF USA INC.Inventors: David Dobbs, Mark F. Spreitzer, Dennis Nelson Denton, Kacy D. Denton, Kevin R. Suva
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Publication number: 20080143060Abstract: The invention provides a multi-layer gasket seal. The gasket seal includes a sheet having a first sheet surface. An aperture pierces the first sheet surface. A first channel is defined in the first sheet surface and extends along a first path around the aperture. The first channel has a depth and a width. The gasket seal also includes a ring seal disposed in the first channel. The ring seal has a thickness defined between a sealing surface facing away from the channel and an opposing surface facing the channel. One of the thickness and the depth varies about the aperture such that a distance between the sealing surface and the first sheet surface varies about the aperture.Type: ApplicationFiled: December 15, 2006Publication date: June 19, 2008Inventors: Arvid Casler, Greg Barclay
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Patent number: 7367566Abstract: A metal gasket for sealing multiple cylinder bores includes one or more metal substrates, main sealing beads around each of the cylinder bores, and one or more sub-beads. The main sealing beads include meandering portions located in a sealing portion between the cylinder bores, and the sub-bead is provided between the meandering portions. By placing the sub-bead between the main bead meandering portions, the base portion of the meandering portion and the base portion of the sub-bead squeeze each other. As a result, the lower portion of the meandering portion can be prevented from slipping, and the surface pressure can be partially reinforced. The metal gasket provides an excellent seal in a location where surface pressure is often partially reduced.Type: GrantFiled: November 9, 2005Date of Patent: May 6, 2008Assignee: Ishikawa Gasket Co., Ltd.Inventors: Tsunekazu Udagawa, Yoshio Miyaoh
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Publication number: 20080093808Abstract: The present invention relates to a metallic flat gasket (1) having at least one gasket layer (2), in which at least one through opening (3) is located, which is enclosed by a sealing element (4) and at least partially has a surface structure (6) on one of its surfaces in the region of the sealing element (4). The surface structure comprises multiple depressions (7) which are positioned neighboring one another and are obtainable by irradiating the surface using laser radiation. The surface structure (6) is outstandingly suitable as a substrate for a coating (11) or an elastomeric sealing element (4). Furthermore, the present invention relates to a method of manufacturing the gasket (1).Type: ApplicationFiled: July 14, 2005Publication date: April 24, 2008Inventors: Lothar Quick, Jurgen Schneider, Harald Plebst
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Publication number: 20080028923Abstract: A hydraulic stroking device that performs stroking action by adjusting a pressure of hydraulic fluid in a fluid chamber is disclosed. The hydraulic device includes a hydraulic piston, a sealing member, and a variable sealing performance mechanism. The piston is provided in a fluid chamber, and receives the pressure of hydraulic fluid and is moved by the pressure. The sealing member seals between a circumferential surface of the piston and an inner surface of the fluid chamber. When the piston is not moving with the hydraulic fluid being pressurized, the variable sealing performance mechanism enhances the sealing performance of the sealing member compared to the sealing performance in a state when the piston is being moved.Type: ApplicationFiled: August 3, 2007Publication date: February 7, 2008Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirofumi Fujita, Kazuyuki Watanabe, Kazuaki Nakamura
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Publication number: 20080023923Abstract: A metal gasket has a primary bead formed on an area positioned between a cylinder bore and a cooling water passage. A second bead is formed on an area corresponding to an opening of one or more cooling passages. A base member of the metal gasket comprises bead plates that have a rubber coating layer. The base member also comprises a shim member disposed between the bead plates. The primary bead is formed by defining a space respectively between the bead plates and the shim member. The secondary bead is formed by defining a space on a given area between the bead plates.Type: ApplicationFiled: July 25, 2007Publication date: January 31, 2008Applicants: YAMAHA MARINE KABUSHIKI KAISHA, JAPAN METAL GASKET CO., LTDInventors: Takuma Kameyama, Takanobu Suzuki, Hiroyuki Matsumoto
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Patent number: 7311310Abstract: In order to achieve good sealing in both a cold and a warm engine by sealing features which are as simple as possible, an at least substantially metallic cylinder head gasket comprises a gasket plate with only one layer of sheet steel extending over the entire gasket plate, and around each combustion chamber opening of the gasket plate, a combustion chamber sealing element forming on at least one side of the gasket an elevation with a gasket sealing surface surrounding the combustion chamber opening in a closed manner for being pressed against an engine component sealing surface.Type: GrantFiled: April 26, 2005Date of Patent: December 25, 2007Assignee: Elring Klinger AGInventors: Armin Diez, Tobias Gruhler, Ulrich Werz, Peter Schenk
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Patent number: 7290770Abstract: A metal gasket for an internal combustion engine includes a first metal plate with a folded portion; a ring member with a sandwiched portion having a sealing bead and an extension portion, with the sandwiched portion being sandwiched in the folded portion to provide a primary sealing portion; a second metal plate laminated to the folded portion of the first metal plate so as to sandwich the extension portion to provide a secondary sealing portion; and a third metal plate sandwiched between the first metal plate and the second metal plate in a portion of the gasket separate from the sandwiched extension portion. In the event that the cylinder head lift becomes greater than the following capability of the sealing bead in the primary sealing portion, the secondary sealing portion provides excellent following capability relative to the lift.Type: GrantFiled: January 10, 2006Date of Patent: November 6, 2007Assignee: Ishikawa Gasket Co., Ltd.Inventor: Tadashi Kasuya
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Patent number: 7287757Abstract: A gasket having a layer including at least one combustion opening and a wave area located on the layer is disclosed. The wave area includes a first wave and a second wave. The first wave is proximate the combustion opening. A flat portion near the second wave includes a first end and a second end. A full bead is located next to the second end of the flat portion whereby a lower surface of the flat portion is above the lower projecting surfaces of the wave area.Type: GrantFiled: June 28, 2005Date of Patent: October 30, 2007Assignee: Dana CorporationInventors: Colin C. Chen, Frank W. Popielas, Rohit Ramkumar, Thomas P. Plunkett, Jeffery A. Foster
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Patent number: 7234705Abstract: A sealing gasket assembly includes one or more carriers each having an offset flexible stopper portion spaced laterally outwardly away from an offset inner sealing portion that is adjacent an opening or other area requiring sealing between mating members adapted to be clamped together. An optional shim can be disposed adjacent to, and aligned with, the carrier. A resilient sealing material is applied to at least portions of the carrier and/or the shim, such as by screen printing, for example. The gasket assembly can be used advantageously in sealing applications such as those for cylinder heads and blocks, intake or exhaust manifolds, piping or other fluid conveying devices, housings, enclosures, or other situations where relative movement can occur between the members to be sealed to each other.Type: GrantFiled: November 3, 2003Date of Patent: June 26, 2007Assignee: Freudenberg-Nok General PartnershipInventors: Martin Novil, Yingjie Kong, Scott M. Anderson, Ronald W. Wangerow
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Patent number: 7204491Abstract: A metal gasket capable of preventing the occurrence of cracks in a stopper while employing a wave-shaped stopper, improving the contact pressure balance around the bead to enhance the engine performance, and improving the durability of the stopper. The metal gasket is constituted by a gasket component sheet having an opening formed to face a combustion chamber, and the gasket component sheet is provided with a combustion chamber bead surrounding the opening. An inner circumference side stopper lower than the height of the combustion chamber bead is formed along the combustion chamber bead in a portion between the combustion chamber bead and the opening such that at least a section of each wave where stress amplitude is large becomes thin, a thin portion and a thick portion are arranged alternately in each wave, and the hardness of the thin portion is higher than that of the thick portion.Type: GrantFiled: January 21, 2005Date of Patent: April 17, 2007Assignees: Kokusan Parts Industry Co., Ltd.Inventors: Koichi Hatamura, Takashi Suzuki, Hiroyuki Ogino, Takahiko Sugiura, Yasuyuki Okudaira, Takeshi Wakuda, Reiji Mahigashi, Keisuke Umehara, Masahisa Kumashiro
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Patent number: 7137631Abstract: A cylinder head gasket is provided for dealing with gas leak between cylinder bores of an engine with a reduced size and rigidity. A cylinder head gasket is formed of one or more metal plates. One metal plate is provided with a first bead, a second bead, and a third bead arranged from inside in this order around a cylinder bore. The first bead is formed around each of the cylinder bores. The second beads are combined into a single bead having a width greater than a width of other section of the second beads in an area between adjacent cylinder bores. The third bead does not pass through the area between the adjacent cylinder bores and surrounds all of the cylinder bores.Type: GrantFiled: December 21, 2004Date of Patent: November 21, 2006Assignee: Ishikawa Gasket Co., Ltd.Inventors: Tsunekazu Udagawa, Yuuichi Kinoshita
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Patent number: 7135519Abstract: A sealing-enhancing coating for a gasket or a portion of a gasket includes flaky particles of chemically exfoliated vermiculite, at least 90% by weight of the particles having a thickness of no more than 30 microns, and no dimension greater than 1 mm. The particles form 10 to 90 wt. % of the coating. The coating also includes 50 to 10 wt. % of an organic polymer binder which when formed into a film 1 mm or less in thickness and heated to 300° C. in free air for 24 hours either does not decompose or decomposes leaving a residue of at least 20% by weight of film.Type: GrantFiled: August 18, 2003Date of Patent: November 14, 2006Assignee: Federal-Mogul Technology LimitedInventors: Alan William Atkinson, Stephen Peter Bond, Darryl Alfred Turland
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Patent number: 7108268Abstract: A metal laminate gasket includes two surface plates, and an intermediate plate. The second surface plate has a folded-back piece folded back around a sealing hole and disposed on a first bead of the first surface plate surrounding the sealing hole. The first plate has a curved portion with a height higher than that of the folded-back piece and disposed adjacent to an outer peripheral edge of the folded-back piece. The curved portion has a crank shape section or a Z-character shape section. A second bead is provided in the intermediate plate adjacent to the curved portion.Type: GrantFiled: October 14, 2004Date of Patent: September 19, 2006Assignee: Ishikawa Gasket Co., Ltd.Inventor: Tsunekazu Udagawa
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Patent number: 7073795Abstract: A metallic gasket having a first seal line SL1 arranged in a manner to encircle the peripheral edge of an exhaust gas hole 3, a second seal line SL2 arranged along the outer peripheral edge of a base plate 2, and full beads 6, 7 formed each in a convex cross-section by bending the base plate 2 along both seal lines. Elastic sealing material 8 to 11, the height of which is substantially equal to the height of a convex portion of the beads, are fixed to the convex portion and a flat surface continuous to the convex portion. The elastic sealing material on the flat surface is so arranged as to cover up to the opening mouth position of the exhaust gas hole 3 or a peripheral edge position of the base plate 2 and, furthermore, elastic material parts 12, 13 are filled in a concave portion of the bead on the reverse side of the convex portion. This structure of the gasket leads to cost reduction and enables the gasket to maintain a stable sealing performance for a long period of time.Type: GrantFiled: November 12, 2002Date of Patent: July 11, 2006Assignee: Japan Metal Gasket Co., Ltd.Inventors: Kosaku Ueta, Hideo Watanabe
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Patent number: 7059292Abstract: A cylinder block includes an inner block member having a cylinder liner portion and an outer block member having a cylinder outer wall portion. With the inner and outer block members assembled together, a water jacket is defined between the outer and inner circumferential surface. A first sealing surface of the cylinder liner portion is opposed to a second sealing surface of the cylinder outer wall portion below the water jacket, and a liquid gasket is provided between the first and second sealing surfaces. A continuous projection is provided on the first sealing surface. When the cylinder liner portion is inserted into the space defined by the cylinder outer wall portion, the projection prevents the gasket from being displaced to a trailing side on the cylinder liner portion with respect to the inserting direction. As a result, the clearance between the block members is sealed reliably.Type: GrantFiled: December 27, 2004Date of Patent: June 13, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Minoru Sugano, Kazunari Takenaka
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Patent number: 7055830Abstract: A metal laminate gasket includes a first plate, intermediate plate and a second plate laminated together. The first plate has a curved portion for defining a hole to be sealed, and a flange extending outwardly from the curved portion. The intermediate plate is situated above the first plate laterally outside the flange. The second plate is situated above the intermediate plate and has a first bead disposed inside the intermediate plate and under the flange, and a second bead disposed outside the first bead and adjacent the flange. The second bead projects upwardly beyond the flange and has an inner section immediately outside the flange and an outer section outside the inner section. The inner section is inclined greater than the outer section.Type: GrantFiled: December 13, 2004Date of Patent: June 6, 2006Assignee: Ishikawa Gasket Co., Ltd.Inventor: Tsunekazu Udagawa
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Patent number: 7048279Abstract: A gasket assembly is formed at least two carrier layers laminated together and formed with at least one opening through the carrier corresponding to openings across a parting plane of two members to be sealed. an elastomeric seal is molded to the carrier to define sealing beads on opposite sides of the carrier adjacent the opening with respective contact surfaces which engage the members to be scaled. The sealing contact surfaces are asymmetrically arranged contact surfaces are asymmetrically arranged relative to one another across the carrier to accommodate associated misalignment of the openings of the members to be sealed across the parting plane.Type: GrantFiled: May 19, 2004Date of Patent: May 23, 2006Assignee: Federal-Mogul World Wide, Inc.Inventors: Erich Gernand, Daniel J. Vialard, Todd M. Willis
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Patent number: 7014194Abstract: A cylinder head gasket for an internal combustion engine is basically formed by first and second metal plates laminated together. The first metal plate includes a base portion, a first hole to be sealed formed in the base portion, a curved portion extending from the base portion to surround the first hole, a flange extending from the curved portion and located above the base portion, an annular portion formed in the flange immediately outside the curved portion, and a first bead formed in the flange outside the annular portion to project outwardly. The second metal plate is laminated on the base portion not to overlap with the flange.Type: GrantFiled: February 4, 2005Date of Patent: March 21, 2006Assignee: Ishikawa Gasket Co., Ltd.Inventors: Tsunekazu Udagawa, Yuuichi Kinoshita
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Patent number: 7011313Abstract: A metallic gasket including a base plate having a convex metal bead formed, by bending the base plate, between a combustion chamber opening and on the outer periphery portion of the base plate, and a first thickness-increased portion formed thicker than the remaining portions of the base plate to provide a difference in thickness, by which a surface pressure is made to concentrate on the first thickness-increased portion to seal a joint between a cylinder head and a cylinder block when the metallic gasket is disposed between the joint surfaces of the cylinder head and the cylinder block and fastened by clamping bolts. An elastic sealing material is fixed to the convex portion of the metal bead and filled in a concave portion on the reverse side of the base plate to form a rubber bead, and the sealing material is deformed under compression in the through-thickness direction in cooperation with the deformation of the metal bead when the gasket is fastened with clamping bolts.Type: GrantFiled: November 12, 2002Date of Patent: March 14, 2006Assignee: Japan Metal Gasket Co., Ltd.Inventors: Kosaku Ueta, Hideo Watanabe
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Patent number: 7000925Abstract: Multi-layered cylinder head seal, with a spacing layer that has openings corresponding to the number of combustion chambers taking cylinder bushings in a combustion engine, in the area of which a combustion chamber edging containing a soft iron ring is located, and in the edge areas at least partially limiting elements are provided, where the spacing layer is in functional contact with functional layers that have several selectable distances from both the associated combustion chamber edging as well as the associated limiting element and that are provided with sumps.Type: GrantFiled: September 25, 2003Date of Patent: February 21, 2006Assignee: Federal-Mogul Sealing Systems GmbHInventors: Klaus Stapel, Alan Retiere
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Patent number: 7000924Abstract: 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).Type: GrantFiled: June 15, 2001Date of Patent: February 21, 2006Assignee: Dana CorporationInventors: Kurt Höhe, Armin Gütermann, Günther Unseld, Georg Egloff
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Patent number: 6997462Abstract: A cylinder head gasket is provided for an engine with low rigidity and a high maximum pressure. In the cylinder head gasket, it is possible to enhance the secondary sealing without greatly affecting the primary sealing. The cylinder head gasket is formed of a first metal plate with a first full bead under a folded portion around a cylinder bore, and a second metal plate with a second full bead around the first full bead. The second metal plate is made of a material with elasticity greater than that of the first metal plate, and is arranged with a gap relative to an outer edge of the folded portion so as not to overlap. The first full bead and the second full bead have top portions facing in opposite directions.Type: GrantFiled: February 4, 2005Date of Patent: February 14, 2006Assignee: Ishikawa Gasket Co., Ltd.Inventor: Tsunekazu Udagawa
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Patent number: 6994353Abstract: A gasket is interposed at a joining portion between two members. The gasket includes a gasket base plate having an opening through which fluid flows and a plurality of annular beads formed in a wave shape over a predetermined area extending outwardly from a hole edge of the opening; and at least one shim covering only the annular beads. The shims are laser-welded at a welding portion to cover the beads. Thus, the metal gasket does not have a pressure trace on abutting surfaces of a cylinder head.Type: GrantFiled: September 28, 2004Date of Patent: February 7, 2006Assignee: Ishikawa Gasket Co., Ltd.Inventor: Yuuichi Kinoshita
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Patent number: 6969072Abstract: 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.Type: GrantFiled: April 28, 2003Date of Patent: November 29, 2005Assignee: Dana CorporationInventor: Jeffery A. Foster
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Patent number: 6962345Abstract: 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.Type: GrantFiled: February 13, 2003Date of Patent: November 8, 2005Assignee: Dana CorporationInventors: Josefino T. Inciong, William A. Johnson
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Patent number: 6951338Abstract: 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.Type: GrantFiled: March 21, 2003Date of Patent: October 4, 2005Assignee: Dana CorporationInventor: Michael J. Kestly
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Patent number: 6945538Abstract: 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.Type: GrantFiled: October 25, 2002Date of Patent: September 20, 2005Assignee: Freudenberg-NOK General PartnershipInventors: Martin Novil, Jerry Gerstile Smith
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Patent number: 6935635Abstract: 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.Type: GrantFiled: December 11, 2003Date of Patent: August 30, 2005Assignee: McCord Leakless Sealing Co.Inventor: Yoshitaka Matsushita
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Patent number: 6926282Abstract: 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.Type: GrantFiled: March 19, 2003Date of Patent: August 9, 2005Assignee: ElringKlinger AGInventors: Ulrich Werz, Frank Schmucker
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Patent number: 6923450Abstract: 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.Type: GrantFiled: October 11, 2001Date of Patent: August 2, 2005Assignee: Dana CorporationInventors: Günther Unseld, Josef Ludwig
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Patent number: 6921084Abstract: A cylinder head gasket includes a main gasket body having at least one cylinder opening, a wire sealing ring, and a metal armoring ensheathing the wire sealing ring. The metal armoring has a first annular flange portion extending beyond the cylinder opening in overlying relation to a first main surface of the main gasket body, a second flange portion opposite the first flange portion having a size no greater than that of the cylinder opening, and a curved portion joining the first and second flange portions. The cylinder opening is notched to receive lock tabs of the second flange portion through the main body, after which the metal armoring is rotated to offset the lock tabs from the notches to lock the armoring and sealing ring within the cylinder opening.Type: GrantFiled: February 24, 2003Date of Patent: July 26, 2005Assignee: Federal-Mogul World Wide, Inc.Inventors: Michael L. Mickelson, Robert M. Reisel, Gregory J. Barclay
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Patent number: 6896271Abstract: 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.Type: GrantFiled: January 9, 2003Date of Patent: May 24, 2005Assignee: Ishikawa Gasket Co., Ltd.Inventors: Tatsuro Uchida, Tadashi Kasuya
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Patent number: 6851677Abstract: 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.Type: GrantFiled: October 31, 2002Date of Patent: February 8, 2005Assignee: Ishikawa Gasket Co., Ltd.Inventors: Yoshio Miyaoh, Kisho Yasuda
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Publication number: 20040195782Abstract: The invention relates to a high-temperature resistant seal, particularly a seal for use in a high-temperature fuel cell. The inventive seal comprises a structured metallic layer having at least one area on whose surface a filler is placed. The filler is comprised, in particular, of clay minerals or ceramic materials. The seal thus advantageously combines the sealing properties of a metallic layer, for example, of an undulated metal foil with the elastic properties of the filler. The seal is particularly suited for use at high temperatures and thus, for example, in high-temperature fuel cells.Type: ApplicationFiled: March 24, 2004Publication date: October 7, 2004Inventors: Martin Bram, Stephan Reckers, Hans Peter Buchkremer, Rolf Steinbrech, Detlev Stover
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Patent number: 6786490Abstract: A metal gasket for a high performance of an engine includes two sheets of elastic metal substrates providing a bead on peripheral portion of a cylinder opening and an annular thin metal plate that is thinner than the elastic metal substrates and surrounds the cylinder opening and is arranged between the substrates. The annular thin metal plate is fixed on the substrate by inserting an engaging portion solidly projected from the outside periphery into a slit formed on the substrate and folding the plate. Due to the thin metal plate, the cylinder opening peripheral portion has a high seal contact pressure in contrast to other locations. Moreover, the contact pressure of the cylinder opening peripheral portion becomes uniform.Type: GrantFiled: March 21, 2002Date of Patent: September 7, 2004Assignee: Nichias CorporationInventors: Michio Fujino, Yutaka Miyata, Hironobu Imanaka, Takeshi Murata
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Patent number: 6769696Abstract: 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 totalType: GrantFiled: January 23, 2002Date of Patent: August 3, 2004Assignee: ElringKlinger AGInventors: Armin Diez, Tobias Gruhler, Wolfgang Fritz
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Patent number: 6758479Abstract: 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.Type: GrantFiled: November 2, 2001Date of Patent: July 6, 2004Assignee: Ishikawa Gasket Co., Ltd.Inventor: Yoshio Miyaoh
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Publication number: 20040124588Abstract: Multi-layered cylinder head seal, with a spacing layer that has openings corresponding to the number of combustion chambers taking cylinder bushings in a combustion engine, in the area which a combustion chamber edging containing a soft iron ring is located, and in the edge areas at least partially limiting elements are provided, where the spacing layer is in functional contact with layers that have several selectable distances from both the associated combustion chamber edging as well as the associated limiting element and that are provided with sumps.Type: ApplicationFiled: September 25, 2003Publication date: July 1, 2004Inventors: Klaus Stapel, Alan Retiere
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Patent number: 6739595Abstract: An improved combustion gasket is disclosed incorporating a self-energizing combustion seal flange. The flange includes at least one valley that serves to redistribute combustion explosion forces acted upon the gasket during operation of the engine to provide improved combustion sealing and to extend flange life.Type: GrantFiled: July 1, 2002Date of Patent: May 25, 2004Assignee: Dana CorporationInventors: Joe Antonini, Muguru Srikantiah Shankar, Subhash Hari Wani
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Patent number: 6733885Abstract: A gasket for an internal combustion engine having a bottom copper layer, a graphite layer overlying the bottom copper layer, an aluminum layer overlying the graphite layer, and a second graphite layer overlying the aluminum layer. The bottom copper layer is then folded over an interior circumference or perimeter of the gasket to form a copper lip. A top copper layer may also be formed over the second graphite layer prior to forming the copper lip.Type: GrantFiled: February 21, 2002Date of Patent: May 11, 2004Inventor: Mark S. Kincart
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Patent number: 6722662Abstract: A metal cylinder head gasket includes a spacer plate; a sealing layer superposed on the spacer plate; an opening in the spacer plate and the sealing layer for surrounding a combustion chamber of an internal-combustion engine and a full bead provided in the sealing layer and surrounding the opening. The full bead has a crest, and first and second bead feet situated radially inward and, respectively, radially outward of the crest. An annular overlay surrounds the opening and is positioned between the spacer plate and the sealing layer and is in engagement with the full bead. The annular overlay has a radially inner edge face in alignment with the opening edges; and a radially outer edge face situated between the crest and the second bead foot. The sealing layer further has a half bead surrounding the full bead and being spaced radially outward from the second bead foot.Type: GrantFiled: January 16, 2002Date of Patent: April 20, 2004Assignee: Federal-Mogul Sealing Systems GmbHInventors: Markus Heilig, Christoph Hilgert, Fabrice Audibert
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Patent number: 6721381Abstract: 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.Type: GrantFiled: November 26, 2002Date of Patent: April 13, 2004Assignee: Westinghouse Electric Company LLCInventors: Kenneth A. Martin, James G. Tursi, Joseph M. Burger, Kurt R. Graeff
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Patent number: 6705618Abstract: 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.Type: GrantFiled: September 26, 2001Date of Patent: March 16, 2004Assignees: Taiho Kogyo Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Osamu Jinno, Eisaburo Goto, Seiji Omura, Tatsuya Kawakita, Hideo Nakamura
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Patent number: 6698765Abstract: A metal gasket is formed by a bead plate provided with a continuous bead, and an outer plate partly bent around combustion chamber holes to laminate the metal plates together. The bead has a linear common portion situated in an intermediate area between two cylinder bore holes, curved surrounding portions diverging from the linear common portion near the one second hole to partly surround the cylincder bore and water hole, and a curved linking portion extending between the curved surrounding portions to partly surround the water hole. The water hole is completely surrounded by the parts of the curved surrounding portions and the curved linking portion.Type: GrantFiled: December 13, 2001Date of Patent: March 2, 2004Assignee: Ishikawa Gasket Co., Ltd.Inventor: Soichi Isogai