Patents by Inventor Juergen Kurth
Juergen Kurth 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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Publication number: 20140151967Abstract: A sealing lip seals a first space from a second space with respect to a liquid medium present in the first space. The sealing lip has abutment surface configured to abut on a sealing surface of a component that is movable relative to the sealing lip along a direction of movement. A groove is defined in the abutment surface and pumps any liquid medium present in the groove towards the first space along the direction of movement. The groove extends completely within the abutment surface and is enclosed by the abutment surface, such that it does not intersect either lateral edge of the sealing lip.Type: ApplicationFiled: May 24, 2012Publication date: June 5, 2014Inventors: Helmut Benedix, Juergen Kurth, Juergen Netzer, Christoph Passow, Willy Seewald
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Patent number: 8651496Abstract: A seal to seal a gap between a rotatable component (4, 18) and a non-rotatable component comprises: A fastening section adapted to be fixedly mounted in relation to the non-rotatable component, a sleeve-like section (3) adapted to be mounted around the rotatable component (4, 18), a resilient section (7) between the sleeve-like and fastening section comprising an arcuate portion (8), and in an unmounted condition, the sleeve-like section (3) has an inner diameter, DSEAL, with a predefined magnitude relative to an outer diameter of the rotating component, DSHAFT, such that 0.9?DSEAL/DSHAFT?1.1.Type: GrantFiled: November 28, 2007Date of Patent: February 18, 2014Assignee: Aktiebolaget SKFInventors: Jürgen Kurth, Clifford Roland Worsley
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Publication number: 20130264776Abstract: The invention relates to a radial shaft seal ring (1), including a reinforcement ring (3) and an elastomeric part (5) connected to the reinforcement ring (3), which elastomeric part (5) has a sealing lip (9) having a first sealing section (11), which is provided with a thread-like return structure (13) for returning a leaked fluid when a shaft is rotating, and having a second sealing section (15), which has a circular-cylindrical outer surface-shaped sealing surface (19) for gas-tight abutment on a stationary shaft, which circular-cylindrical outer surface-shaped sealing surface (19) has a microstructure (17).Type: ApplicationFiled: October 17, 2011Publication date: October 10, 2013Inventor: Juergen Kurth
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Publication number: 20130082203Abstract: A valve stem seal (1) seals a valve stem (4) that is reciprocally movable in an axial direction. The valve stem seal includes a base body (8) that is connectable with a valve stem guide (6). A first seal lip (10) is resiliently positioned relative to the base body via an elastic connection (16) and seals the valve stem relative to an oil chamber (24). A second seal lip (12) is spaced in the axial direction (2) from the first seal lip and seals the valve stem relative to a gas chamber. The second seal lip is also resiliently positioned relative to the base body via the elastic connection.Type: ApplicationFiled: September 27, 2012Publication date: April 4, 2013Applicant: AKTIEBOLAGET SKFInventors: Juergen Kurth, Juergen Netzer
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Patent number: 8322726Abstract: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.Type: GrantFiled: June 8, 2007Date of Patent: December 4, 2012Assignee: AB SKFInventor: Jürgen Kurth
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Patent number: 8272649Abstract: A steering knuckle pin bearing assembly includes a bearing and a steering knuckle pin pivotably supporting a steering knuckle relative to an axle beam. A sealing collar seals a space between the bearing and the steering knuckle pin, which space may include a spacer washer. The sealing collar is slidably borne on a radial outer surface of the bearing. In addition, the sealing collar has at least one sealing region that is in slidable contact with an at least substantially cylindrical sealing surface of the axle beam.Type: GrantFiled: November 24, 2009Date of Patent: September 25, 2012Assignee: Aktiebolaget SKFInventors: Jürgen Kurth, Marcel Gersting
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Publication number: 20120193876Abstract: A seal for a compressor for sealing a shaft comprises a first seal part with a sealing edge which is provided on a circular cylindrical surface along a line which deviates from a circular shape and which is closed in itself in the peripheral direction for adjoining and sealing the shaft, and a second seal part with a sealing section which is intended to adjoin the shaft and which is hollowly cylindrical when it adjoins properly with the inside surface which comprises a return structure for a fluid.Type: ApplicationFiled: April 13, 2012Publication date: August 2, 2012Applicant: AB SKFInventor: Jürgen Kurth
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Patent number: 8100408Abstract: A sealing element is provided for placement between first and second components, wherein the first component includes a cylindrical cavity with a step-shaped shoulder which narrows the cavity, and the second component is a cylindrical component for placement in the cavity. The sealing element comprises a stiffening body with a L-shaped longitudinal cut surface, with the first leg of the L shape being provided extending between the jackets of the cavity and of the second component, and the second leg being provided essentially in the region of the shoulder extending between the two components and at least in partial regions for touching the shoulder and the end side of the second component.Type: GrantFiled: April 21, 2008Date of Patent: January 24, 2012Assignee: Aktiebolaget SKFInventor: Jürgen Kurth
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Publication number: 20120001395Abstract: A seal assembly seals a first portion of a machine part relative to a second portion of the machine part. The seal assembly includes at least one seal element that contacts the machine part or contacts a component connected with the machine part or that extends with a gap relative to the machine part or to the component connected with the machine part. At least one of the seal element, the machine part and the component connected with the machine part is provided or coated with a material, which has super hydrophobic properties, in the area of the seal element.Type: ApplicationFiled: March 12, 2010Publication date: January 5, 2012Inventors: Jürgen Kurth, Jochen Lorenscheit
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Patent number: 8052151Abstract: In a sealing arrangement sealing at least one axial end section of a hollow shaft that is arranged in a cavity of a component, with the hollow shaft being adapted to route a fluid, a gasket is adapted to be located between the component and the shaft. The gasket is made with a sealing lip to adjoin the outer peripheral surface of the end section. The gasket also includes an axially projecting portion that projects axially beyond the end of the shaft. The axially projecting portion of the gasket surrounds a device for filtering the fluid and/or a device for determining the flow cross-section of the fluid.Type: GrantFiled: August 30, 2006Date of Patent: November 8, 2011Assignee: AB SKFInventor: Jürgen Kurth
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Publication number: 20110031701Abstract: A seal to seal a gap between a rotatable component (4, 18) and a non-rotatable component comprises: A fastening section adapted to be fixedly mounted in relation to the non-rotatable component, a sleeve-like section (3) adapted to be mounted around the rotatable component (4, 18), a resilient section (7) between the sleeve-like and fastening section comprising an arcuate portion (8), and in an unmounted condition, the sleeve-like section (3) has an inner diameter, DSEAL, with a predefined magnitude relative to an outer diameter of the rotating component, DSHAFT, such that 0.9?DSEAL/DSHAFT?1.1.Type: ApplicationFiled: November 28, 2008Publication date: February 10, 2011Inventors: Jürgen Kurth, Cliffor Roland Worsley
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Publication number: 20100237567Abstract: A sealing element for sealing a shaft, which is provided for rotating in accordance with its design, at a through-opening of a housing part for the shaft, comprising the following features: a reinforcement part (2) and an elastomeric part (5) connected with the reinforcement part, the elastomeric part (5) comprises a first sealing region (10) for a static-sealing abutment on the housing part and the elastomeric part comprises a second sealing region (20) having a sealing segment (22) formed and provided for sealing abutment on the shaft, which sealing segment comprises a thread-like return structure for a return of a leaked fluid into a to-be-sealed space, and a free axial end in the sealing segment normally abutting on the shaft is formed with a closed line (26) in the circumferential direction and extending on a circular-cylinder surface, which line is provided for sealing abutment on the shaft at least when the shaft is not rotating.Type: ApplicationFiled: July 22, 2008Publication date: September 23, 2010Inventors: Jürgen Kurth, Jürgen Netzer
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Publication number: 20100140895Abstract: A steering knuckle pin bearing assembly includes a bearing and a steering knuckle pin pivotably supporting a steering knuckle relative to an axle beam. A sealing collar seals a space between the bearing and the steering knuckle pin, which space may include a spacer washer. The sealing collar is slidably borne on a radial outer surface of the bearing. In addition, the sealing collar has at least one sealing region that is in slidable contact with an at least substantially cylindrical sealing surface of the axle beam.Type: ApplicationFiled: November 24, 2009Publication date: June 10, 2010Applicant: Aktiebolaget SKFInventors: Jürgen Kurth, Marcel Gersting
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Patent number: 7670111Abstract: A seal for a compressor for sealing a shaft includes a first seal part of a first material, a second seal part of a second material different from the first material, and a stiffening part. The second seal part is connected at least with a radially extending surface area to at least one of the other parts and the surface area of the second seal part opposite the aforementioned surface area is kept from making contact with the stiffening part. The first seal part is provided, toward the axial side, with a sealing lip which is adapted for sealing contact with the shaft, and the second seal part is made such that the radially inner area of the second seal part extends axially and is free from collision with the sealing lip when the seal is properly installed.Type: GrantFiled: May 18, 2006Date of Patent: March 2, 2010Assignee: AB SKFInventors: Raimund Maass, Juergen Kurth
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Publication number: 20060269407Abstract: A seal for a compressor for sealing a shaft includes a first seal part of a first material, a second seal part of a second material different from the first material, and a stiffening part. The second seal part is connected at least with a radially extending surface area to at least one of the other parts and the surface area of the second seal part opposite the aforementioned surface area is kept from making contact with the stiffening part. The first seal part is provided, toward the axial side, with a sealing lip which is adapted for sealing contact with the shaft, and the second seal part is made such that the radially inner area of the second seal part extends axially and is free from collision with the sealing lip when the seal is properly installed.Type: ApplicationFiled: May 18, 2006Publication date: November 30, 2006Applicant: AB SKFInventors: Raimund Maass, Juergen Kurth
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Patent number: 6913264Abstract: A sealing arrangement for sealing a housing with respect to a shaft includes a first annular supporting element connected to the housing, a second annular supporting element connected to the shaft, and a first seal connected to one of the two supporting elements and in abradant contact with the other supporting element. To improve the sealing function of the sealing arrangement, the supporting element to which the first seal is not connected is provided with a second seal which runs frictionally on the machine part to which the first supporting element is connected.Type: GrantFiled: September 9, 2002Date of Patent: July 5, 2005Assignee: AB SKFInventor: Jürgen Kurth