Patents by Inventor David G. Kupper
David G. Kupper 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: 10352452Abstract: A seal assembly for use in a dynamic pin joint defining axial and radial directions comprises a counterface seal ring subassembly including a counterface seal ring member that includes a radially extending planar seal face and a first contoured load ring interface, and a first load ring.Type: GrantFiled: September 26, 2016Date of Patent: July 16, 2019Assignee: Caterpillar Inc.Inventor: David G. Kupper
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Publication number: 20180087668Abstract: A seal assembly for use in a dynamic pin joint defining axial and radial directions comprises a counterface seal ring subassembly including a counterface seal ring member that includes a radially extending planar seal face and a first contoured load ring interface, and a first load ring.Type: ApplicationFiled: September 26, 2016Publication date: March 29, 2018Applicant: Caterpillar Inc.Inventor: David G. Kupper
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Patent number: 9388906Abstract: A seal assembly for sealing between a first member and a second member of a joint, the first member being able to pivot about an axis of the joint relative to the second member, is disclosed. The seal assembly includes a first ring, a load ring, a first seal ring, and a resilient second seal ring. The first ring is for a first seal cavity of the first member. The load ring is for a second seal cavity of the second member. The first seal ring may have a sealing surface extending in a radial direction. The resilient second seal ring may have an annular seal lip. The first seal ring is held stationary by the first ring in the first seal cavity of the first member, and the second seal ring is forced axially by the load ring into axial sealing engagement with the first seal ring.Type: GrantFiled: December 7, 2011Date of Patent: July 12, 2016Assignee: Caterpillar Inc.Inventors: David G. Kupper, Mark S. Diekevers
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Patent number: 8876226Abstract: A seal assembly 10,110 for sealing between a first member 12,112 and a second member 14,114 of a joint, the first member 12,112 being able to pivot about an axis 60,160 of the joint relative to the second member 12,112, is disclosed. The seal assembly 10,110 includes an annular seal body 30,130 which has a sufficient axial dimension X,XX to span first and second seal cavities 20,120,22,122 of the first member 12,112 and second member 14,114 of a joint.Type: GrantFiled: December 7, 2011Date of Patent: November 4, 2014Assignee: Caterpillar Inc.Inventor: David G. Kupper
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Publication number: 20130045040Abstract: An elastomeric bushing can be incorporated into a pin joint assembly of a machine. The elastomeric bushing can be configured to allow at least three degrees of relative rotational movement, including roll, pitch, and yaw. The elastomeric bushing can rotate with respect to a pin about a longitudinal axis thereof. The elastomeric bushing is adapted to accommodate out-of-plane movement. The elastomeric bushing can include a plurality of alternating elastomeric layers and metal plies.Type: ApplicationFiled: August 20, 2012Publication date: February 21, 2013Applicant: CATERPILLAR INC.Inventors: Ronald Mark Ginn, Dan J. Becker, Sunil I. Mathew, David G. Kupper
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Publication number: 20120161399Abstract: A seal assembly for sealing between a first member and a second member of a joint, the first member being able to pivot about an axis of the joint relative to the second member, is disclosed. The seal assembly includes a first ring, a load ring, a first seal ring, and a resilient second seal ring. The first ring is for a first seal cavity of the first member. The load ring is for a second seal cavity of the second member. The first seal ring may be of a metal having a sealing surface extending in a radial direction. The resilient second seal ring may have an annular seal lip. The first seal ring is held stationary by the first ring in the first seal cavity of the first member, and the second seal ring is forced axially by the load ring into axial sealing engagement with the first seal ring. A track joint may include such a seal assembly and a vehicle may include such a seal assembly. The first seal ring may be integral with a thrust ring.Type: ApplicationFiled: December 7, 2011Publication date: June 28, 2012Applicant: Caterpillar Inc.Inventors: David G. Kupper, Mark S. Diekevers
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Publication number: 20120161509Abstract: A seal assembly 10,110 for sealing between a first member 12,112 and a second member 14,114 of a joint, the first member 12,112 being able to pivot about an axis 60,160 of the joint relative to the second member 12,112, is disclosed. The seal assembly 10,110 includes an annular seal body 30,130 which has a sufficient axial dimension X,XX to span first and second seal cavities 20,120,22,122 of the first member 12,112 and second member 14,114 of a joint.Type: ApplicationFiled: December 7, 2011Publication date: June 28, 2012Applicant: Caterpillar Inc.Inventor: David G. Kupper
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Patent number: 6869244Abstract: An improved articulated pin joint for a track chain used on track laying work machines is provided. The articulated pin joint includes a plug positioned in a central cavity of a track pin. The plug includes an axial passage in which a needle can be inserted to inject grease into the central cavity. The invention facilitates replenishing grease in the field without removing the track chain from the track laying work machine.Type: GrantFiled: December 17, 2002Date of Patent: March 22, 2005Assignee: Caterpillar IncInventors: Peter W. Anderton, Daniel D. Angot, Steve L. Arianoutsos, J. Christopher Barnes, David G. Kupper
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Publication number: 20040114993Abstract: An improved articulated pin joint for a track chain used on track laying work machines is provided. The articulated pin joint includes a plug positioned in a central cavity of a track pin. The plug includes an axial passage in which a needle can be inserted to inject grease into the central cavity. The invention facilitates replenishing grease in the field without removing the track chain from the track laying work machine.Type: ApplicationFiled: December 17, 2002Publication date: June 17, 2004Inventors: Peter W. Anderton, Daniel D. Angot, Steve L. Arianoutsos, J. Christopher Barnes, David G. Kupper
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Patent number: 6406029Abstract: A seal ring having a frustoconical spring completely encapsulated within an annular body provides a bias force to an annular lip seal of the annular body to assure positive contact with an opposed face of an adjacently disposed member of a joint assembly. The seal ring requires minimal counterbore depth in the member in which the seal ring is mounted, and no modifications are required in the spring or in the base of the counterbore to provide retention of the spring in the joint.Type: GrantFiled: August 17, 1999Date of Patent: June 18, 2002Assignee: Caterpillar Inc.Inventors: David G. Kupper, Jerry A. Metz
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Patent number: D364408Type: GrantFiled: April 8, 1994Date of Patent: November 21, 1995Assignee: Caterpillar Inc.Inventors: Gary C. Bryant, Alan A. Davidovich, Thomas L. Howard, David G. Kupper, Sydney K. Scott, David G. Surridge, Mark W. Vannette