Patents by Inventor Rolf Prehn
Rolf Prehn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10539237Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.Type: GrantFiled: November 20, 2018Date of Patent: January 21, 2020Assignee: Tenneco Inc.Inventors: Thomas W. Swasey, Carl Schenten, Mark Bowman, John Sas, Rolf Prehn, Carlos Santiago, Tim O'Keefe, Michael Shirilla, Thomas O. Zurfluh, Kyle T. Roberts
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Patent number: 10533663Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.Type: GrantFiled: December 7, 2016Date of Patent: January 14, 2020Assignee: Tenneco Inc.Inventors: Thomas W. Swasey, Carl Schenten, Mark Bowman, John Sas, Rolf Prehn, Carlos Santiago, Tim O'Keefe, Michael Shirilla, Thomas O. Zurfluh, Kyle T. Roberts
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Publication number: 20190085977Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.Type: ApplicationFiled: November 20, 2018Publication date: March 21, 2019Inventors: Thomas W. Swasey, Carl Schenten, Mark Bowman, John Sas, Rolf Prehn, Carlos Santiago, Tim O'Keefe, Michael Shirilla, Thomas O. Zurfluh, Kyle T. Roberts
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Publication number: 20170082197Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.Type: ApplicationFiled: December 7, 2016Publication date: March 23, 2017Inventors: THOMAS W. SWASEY, CARL SCHENTEN, MARK BOWMAN, JOHN SAS, ROLF PREHN, CARLOS SANTIAGO, TIM O'KEEFE, MICHAEL SHIRILLA, THOMAS O. ZURFLUH, KYLE T. ROBERTS
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Patent number: 9518660Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.Type: GrantFiled: August 11, 2010Date of Patent: December 13, 2016Assignee: Federal-Mogul CorporationInventors: Thomas W. Swasey, Carl Schenten, Mark Bowman, John Sas, Carlos Santiago, Rolf Prehn, Tim O'Keefe, Michael Shirilla, Thomas O. Zurfluh, Kyle T. Roberts
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Publication number: 20130056936Abstract: The invention relates to a method for producing sealing rings open to the outside or to the inside, which method comprises the steps of providing a tube, arranging the wall of the tube between at least one first roller that is parallel to the tube and has a first outside contour, and at least one second roller that is parallel to the tube and has a second outside contour; carrying out a relative movement of the at least one first roller and the at least one second roller towards each other; forming at least one sealing ring by a relative movement of the wall of the tube between the at least one first roller and the at least one second roller, wherein the cross-section of the at least one sealing ring is defined substantially by the space between the first and second outside contours; and severing the at least one sealing ring from the tube. The invention also relates to a device for carrying out the method and to a selling ring produced in said manner.Type: ApplicationFiled: January 26, 2011Publication date: March 7, 2013Inventors: Rolf Prehn, Axel Ulbrich
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Publication number: 20120153576Abstract: The invention relates to a flat seal, in particular an exhaust-gas-side seal, for an internal combustion engine, formed by an at least one-layer sealing element, which is provided with an opening, and a carrier element, which accommodates and guides the same with play and which is provided with screw through-holes, where the components that guide the sealing element project beyond the footprint of the carrier element, and the carrier element and/or the sealing element is provided with at least partially raised areas.Type: ApplicationFiled: June 18, 2010Publication date: June 21, 2012Inventor: Rolf Prehn
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Publication number: 20120073343Abstract: A method for producing metallic sealing and stopper elements for flat gaskets by winding or rolling at least one metallic, sheet metal- or foil-like base body to obtain a tube as an intermediate product, bringing the mutually opposing end regions or parts, or the entire contact surface of the tube, into operative connection with each other by way of bonding, non-positive or positive joining techniques, or combinations thereof, contouring the tube or tube sections generated therefrom at least in some regions, and severing at least one annular or disk-shaped component in order to generate a sealing or stopper element in the contoured region of the tube or tube section.Type: ApplicationFiled: May 20, 2010Publication date: March 29, 2012Applicant: Federal-Mogul Sealing Systems GmbHInventor: Rolf Prehn
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Publication number: 20120073348Abstract: A method for producing annular metallic sealing elements by bringing at least two sheet metal strips or foil strips having predefinable thicknesses, lengths, and widths into operative connection with each other in the manner of a tailored blank or patchwork, subsequently winding this composite to obtain a tube, wherein the mutually facing end regions of the tubular multilayer composite are connected to each other non-positively or positively or by bonding, or combinations thereof, notably by thermal action such as by welding or soldering, and either dividing the tube into individual ring elements, which are subsequently formed using mechanical shape-forming to obtain the respective sealing element, or forming the entire tube and dividing the tube thus profiled into ring elements to obtain individual sealing elements.Type: ApplicationFiled: May 20, 2010Publication date: March 29, 2012Applicant: Federal-Mogul Sealing Systems GmbHInventor: Rolf Prehn
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Publication number: 20120070272Abstract: A method for producing metallic elements, and more particularly sealing elements, wherein a sheet metal strip or a foil strip having a predefinable length, width, and thickness is generated and the sheet metal strip or foil strip is formed to obtain a tube, the mutually opposing end regions or parts, or the entire contact surface of the sheet metal strip or foil strip, are connected to each other non-positively or positively or by bonding, or combinations thereof, and the entire length of the tube, or portions thereof, is subjected to a mechanical shape-forming process so that predefinable contours are introduced into the outer or inner circumferential surface of the tube in defined locations by a means, and the tube is divided into an appropriate number of individual elements, and in particular sealing elements, especially sealing rings for turbochargers.Type: ApplicationFiled: May 20, 2010Publication date: March 22, 2012Applicant: Federal-Mogul Sealing Systems GmbHInventor: Rolf Prehn
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Publication number: 20120056385Abstract: A sealing element for sealing flange faces on internal combustion engines, comprising at least one annular metal profiled body, characterized in that the profiled body is made of a wire and comprises at least one core region and at least one bending region, the material thickness of the wire is designed to be greater in the core region than in the respective bending region, and the wire in the core region is provided with at least one connecting means for direct or indirect connection to at least one further component. A radial cross-section of the sealing element is banana-shaped with a center region of the banana-shape being the sealing element core region and an end region of the banana-shape being the bending regions.Type: ApplicationFiled: December 18, 2009Publication date: March 8, 2012Applicant: Federal-Mogul Sealing Systems GmbHInventor: Rolf Prehn
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Publication number: 20110109049Abstract: The invention relates to a sealing element for sealing flange surfaces in internal combustion engines, consisting of at least one annular metallic profiled body. Said sealing element is characterised in that the profiled body consists of a wire and comprises at least one central area and at least one flexible area. The material thickness of the wire in the central area is greater than the thickness of the wire in the respective flexible area.Type: ApplicationFiled: June 19, 2009Publication date: May 12, 2011Inventors: Rolf Prehn, Schneider Matthias
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Publication number: 20110101626Abstract: The invention relates to a flat seal, in particular a cylinder head gasket or an exhaust flange seal, comprising at least one layer provided with at least one through opening. The through opening receives at least one elastically deformable profiled body configured as an annular profile wire, having a defined material thickness. The total height of the non-deformed profiled body is greater than the thickness of the layer, and the layer is provided at least partially with material thickening in the region of the profiled body and/or outside of the profiled body.Type: ApplicationFiled: June 19, 2009Publication date: May 5, 2011Applicant: FEDERAL-MOGUL SEALING SYSTEMS GMBHInventors: Rolf Prehn, Theofilos Chatziioannidis, Rainer Capellmann
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Publication number: 20110101623Abstract: A flat seal, in particular a cylinder head gasket or an exhaust flange seal, includes at least one layer provided with at least one through opening. The through opening receives at least one elastically deformable profiled body configured as an annular profile wire. The profiled body, when seen in the radial direction, has different material thicknesses and is functionally connected to at least one support body.Type: ApplicationFiled: June 19, 2009Publication date: May 5, 2011Inventors: Rolf Prehn, Rainer Capellmann
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Publication number: 20110079964Abstract: A static gasket and method of construction thereof is provided. The gasket includes a functional layer constructed of one type of metal having an opening bounded by an inner periphery an outer periphery. The gasket further includes a carrier layer constructed of a different metal than the functional layer. The carrier layer has an opening bounded by an inner periphery configured to receive the outer periphery of the functional layer in a line-to-line or loose fit. The functional layer is configured in substantially coplanar relation with the carrier layer with a first portion of the outer periphery of the functional layer being welded to a radially aligned first portion of the inner periphery of the carrier layer. A second portion of the outer periphery of the functional layer remains detached from a radially aligned second portion of the inner periphery of the carrier layer.Type: ApplicationFiled: August 11, 2010Publication date: April 7, 2011Inventors: Thomas W. Swasey, Carl Schenten, Mark Bowman, John Sas, Carlos Santiago, Rolf Prehn, Tim O'Keefe, Michael Shirilla, Thomas O. Zurfluh, Kyle T. Roberts
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Publication number: 20110006487Abstract: The invention relates to a flat seal, especially a seal on the exhaust gas side for an internal combustion engine. Said seal is constituted of at least one monolayer sealing element that has a recess, said sealing element consisting of a high-grade, especially high-temperature resistant, metal material, and of a support element receiving the sealing element, said support element consisting of a lower-grade metal material, the support element receiving and guiding the sealing element in such a manner that the sealing element can be fastened and mounted.Type: ApplicationFiled: December 6, 2008Publication date: January 13, 2011Inventor: Rolf Prehn