Patents by Inventor Rut Heemskerk
Rut Heemskerk 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: 8414193Abstract: A retaining element is disposed between two adjacent roller bodies of a roller bearing having an inner ring and an outer ring. The inner ring has an inner ring track with an inner radius and the outer ring has an outer ring track with an outer radius. Center points of the roller bodies are disposed along a pitch circle having a pitch circle radius. The retaining element extends radially inward from the pitch circle over at least 90% of the difference between the pitch circle radius and the inner radius and extends radially outward from the pitch circle over up to 50% of the difference between the outer radius and the pitch circle radius or vice versa.Type: GrantFiled: March 31, 2010Date of Patent: April 9, 2013Assignee: Aktiebolaget SKFInventors: Robert Grüll, Rut Heemskerk, Stefan Pampel, Markus Volkmuth, Jürgen Reichert
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Publication number: 20100278470Abstract: A retaining element is disposed between two adjacent roller bodies of a roller bearing having an inner ring and an outer ring. The inner ring has an inner ring track with an inner radius and the outer ring has an outer ring track with an outer radius. Center points of the roller bodies are disposed along a pitch circle having a pitch circle radius. The retaining element extends radially inward from the pitch circle over at least 90% of the difference between the pitch circle radius and the inner radius and extends radially outward from the pitch circle over up to 50% of the difference between the outer radius and the pitch circle radius or vice versa.Type: ApplicationFiled: March 31, 2010Publication date: November 4, 2010Applicant: AKTIEBOLAGET SKFInventors: Robert Grull, Rut Heemskerk, Stefan Pampel, Markus Volkmuth, Jurgen Reichert
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Patent number: 7073948Abstract: A roller bearing (e.g., a cross taper roller bearing) includes an outer ring, an inner ring and rolling elements (e.g., taper rollers) located between the inner and outer rings. The rolling elements are kept at a distance by a cage formed from a number of individual cage segments. Each cage segment has two opposing guide sections for one of the rolling elements to at least partially encompass the rolling element on both sides. In addition, for the rolling elements bordering the one rolling element, the cage segment has guide sections which, in interaction with a corresponding guide section of an adjacent cage segment, at least partially encompass the bordering rolling elements.Type: GrantFiled: July 30, 2004Date of Patent: July 11, 2006Assignee: AB SKFInventors: Gunter Neder, Rut Heemskerk, Bruno Schemmel, Jurgen Reichert, Robert Grull, Burkard Beck, Alfred Schwappach, Stefan Wagner
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Patent number: 6979132Abstract: A cylindrical roller bearing includes an outer bearing ring, an inner bearing ring and cylindrical rollers located between the outer and inner bearing rings. One of the rings has side rims forming an axial stop for the cylindrical rollers. The bearing ring on which the side rims are not provided is formed with at least one groove outside the axial extension of the cylindrical rollers. A ring of spring-elastic material is positioned in the groove to form an axial stop for the cylindrical rollers. The periphery of the ring has no interruptions. To improve the running behavior of the cylindrical roller bearing, the ring possesses a V-shaped cross-section with two legs.Type: GrantFiled: October 7, 2003Date of Patent: December 27, 2005Assignee: AB SKFInventors: Hans-Jürgen Friedrich, Bernhard Groschek, Torbjörn Hedman, Rut Heemskerk, Jürgen Stürzengerger, Alfred Weidinger
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Publication number: 20050058383Abstract: A roller bearing (e.g., a cross taper roller bearing) includes an outer ring, an inner ring and rolling elements (e.g., taper rollers) located between the inner and outer rings. The rolling elements are kept at a distance by a cage formed from a number of individual cage segments. Each cage segment has two opposing guide sections for one of the rolling elements to at least partially encompass the rolling element on both sides. In addition, for the rolling elements bordering the one rolling element, the cage segment has guide sections which, in interaction with a corresponding guide section of an adjacent cage segment, at least partially encompass the bordering rolling elements.Type: ApplicationFiled: July 30, 2004Publication date: March 17, 2005Applicant: AB SKFInventors: Gunter Neder, Rut Heemskerk, Bruno Schemmel, Jurgen Reichert, Robert Grull, Burkard Beck, Alfred Schwappach, Stefan Wagner
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Publication number: 20040131296Abstract: A cylindrical roller bearing includes an outer bearing ring, an inner bearing ring and cylindrical rollers located between the outer and inner bearing rings. One of the rings has side rims forming an axial stop for the cylindrical rollers. The bearing ring on which the side rims are not provided is formed with at least one groove outside the axial extension of the cylindrical rollers. A ring of spring-elastic material is positioned in the groove to form an axial stop for the cylindrical rollers. The periphery of the ring has no interruptions. To improve the running behavior of the cylindrical roller bearing, the ring possesses a V-shaped cross-section with two legs.Type: ApplicationFiled: October 7, 2003Publication date: July 8, 2004Applicant: AB SKFInventors: Hans-Jurgen Friedrich, Bernhard Groschek, Torbjorn Hedman, Rut Heemskerk, Jurgen Sturzengerger, Alfred Weidinger
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Patent number: 5772338Abstract: In a raceway-guided or flange-guided cage made of plastic for roller bearings, webs (18) between side rings (14) and (16) are specially designed to prevent foreign particles present in the lubricant from damaging contact surfaces (S) of rollers (R). For this purpose, guide surfaces (26) are provided only at edges of rollers (R). Intermediate web side surfaces (30, 32) are set back from contact surface (S) by a wider gap (G). Retaining projections (40) are also separated by a gap (G.sub.1) from contact surface (S) in the axial center, the point of greatest flexiblity for the snapping-in of the rollers.Type: GrantFiled: August 26, 1996Date of Patent: June 30, 1998Assignee: SKF GmbHInventors: Reinhart Hillmann, Rut Heemskerk
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Patent number: 5382099Abstract: A bearing unit consists of a radial bearing 1 and an axial bearing 2, the outer ring 3 of the radial bearing 1 being extended at one end in the axial direction to hold the axial bearing 2.So that the bearing unit is able to absorb large radial and axial forces and is reliably sealed off against contamination from the outside, the outer ring 3 of the radial bearing 1 consists of a solid piece of material, and the extension 3.sup.a of the outer ring 3 is provided, starting from the end surface 4, with a bore 4.sup.a to hold the axial bearing 2, this bore being sealed by a bearing housing cover 6, which rests against the end surface 2.sup.a of the axial bearing 2 and is connected to the outer ring 3.Type: GrantFiled: April 2, 1993Date of Patent: January 17, 1995Assignee: SKF GmbHInventors: Bernhard Bauer, Rut Heemskerk, Knut Mirring, Armin Olschewski, Martin Schepp, Klaus Kispert, Jurgen Scholl, Rainer Stanzel, Robert Stolz
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Patent number: 4637740Abstract: For a bearing bushing of generally cup-like form for universal joints including a universal joint pin, a check plate disposed between the axial end face of the pin and the bottom wall of the bushing, said check plate having on the side thereof confronting the pin concentric or circumferentially distributed projections with check surfaces and in that, proceeding from the end surface facing away from the pin, it has recesses or the like, which are arranged under the projections in the axial direction.Type: GrantFiled: October 16, 1985Date of Patent: January 20, 1987Assignee: SKF GmbH SchweinfurtInventors: Armin Olschewski, Bernhard Bauer, Elisabeth Zirk, Rut Heemskerk