Patents by Inventor James Robert LaHood
James Robert LaHood 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: 10060100Abstract: A ground engaging tooth assembly for a cutting edge of a ground engaging implement may include an adapter and a ground engaging tip. The adapter may have a forward extending adapter nose having an inverted or reverse keystone-shaped contour, with the ground engaging tip having a nose cavity for receiving the adapter nose and exterior surfaces having complementary shapes to the adapter nose. The adapter nose and an adapter cavity of the tip may also be configured with complimentary surfaces that increase retention between the adapter nose and the tip when downward forces are applied to the tip. In other embodiments, the surfaces of the tip may include reliefs extending inwardly into the body of the tip to reduce weight and facilitate penetration of the tip into work material as wear material wears away from a front edge of the tip.Type: GrantFiled: December 1, 2016Date of Patent: August 28, 2018Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood, Thomas Marshall Congdon
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Patent number: 10041230Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. The ground engaging tip may have a substantially keystone-shaped contour providing additional wear material at the top surface for use in top-wearing earth moving applications.Type: GrantFiled: October 11, 2016Date of Patent: August 7, 2018Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood
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Patent number: 9624651Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. In various embodiments, the ground engaging tip is configured for digging into work material in diverse earth moving environments.Type: GrantFiled: April 27, 2015Date of Patent: April 18, 2017Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert LaHood, Sudha Kottakapu, Thomas Marshall Congdon
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Publication number: 20170081827Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. The ground engaging tip may have a substantially keystone-shaped contour providing additional wear material at the top surface for use in top-wearing earth moving applications.Type: ApplicationFiled: October 11, 2016Publication date: March 23, 2017Applicant: Caterpillar Inc.Inventors: William J. RENSKI, James Robert LAHOOD
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Publication number: 20170081828Abstract: A ground engaging tooth assembly for a cutting edge of a ground engaging implement may include an adapter and a ground engaging tip. The adapter may have a forward extending adapter nose having an inverted or reverse keystone-shaped contour, with the ground engaging tip having a nose cavity for receiving the adapter nose and exterior surfaces having complementary shapes to the adapter nose. The adapter nose and an adapter cavity of the tip may also be configured with complimentary surfaces that increase retention between the adapter nose and the tip when downward forces are applied to the tip. In other embodiments, the surfaces of the tip may include reliefs extending inwardly into the body of the tip to reduce weight and facilitate penetration of the tip into work material as wear material wears away from a front edge of the tip.Type: ApplicationFiled: December 1, 2016Publication date: March 23, 2017Applicant: CATERPILLAR INC.Inventors: William J. Renski, James Robert Lahood, Thomas Marshall Congdon
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Patent number: 9546471Abstract: A ground engaging tooth assembly for a cutting edge of a ground engaging implement may include an adapter and a ground engaging tip. The adapter may have a forward extending adapter nose having an inverted or reverse keystone-shaped contour, with the ground engaging tip having a nose cavity for receiving the adapter nose and exterior surfaces having complementary shapes to the adapter nose. The adapter nose and an adapter cavity of the tip may also be configured with complimentary surfaces that increase retention between the adapter nose and the tip when downward forces are applied to the tip. In other embodiments, the surfaces of the tip may include reliefs extending inwardly into the body of the tip to reduce weight and facilitate penetration of the tip into work material as wear material wears away from a front edge of the tip.Type: GrantFiled: December 19, 2014Date of Patent: January 17, 2017Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood, Thomas Marshall Congdon
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Patent number: 9528248Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. The ground engaging tip may have a substantially keystone-shaped contour providing additional wear material at the top surface for use in top-wearing earth moving applications.Type: GrantFiled: December 19, 2014Date of Patent: December 27, 2016Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert LaHood
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Patent number: 9428886Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. The adapter nose and an adapter cavity of the tip may be configured with surfaces to increase retention when downward forces are applied to the tip.Type: GrantFiled: September 22, 2014Date of Patent: August 30, 2016Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert LaHood
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Patent number: 9315971Abstract: Disclosed are various exemplary embodiments of a retainer bushing for use with a lock of a ground engaging tool. The retainer bushing may include a skirt extending around a retainer axis, where the skirt may include an outer surface configured to mate with a lock cavity of the ground engaging tool and an inner surface configured to rotatably receive an outer surface of the lock. The retainer bushing may also include a detent projection extending radially inward from the inner surface and configured to engage a detent recess of the lock to resist rotation of the lock. The skirt and the detent projection may be integrally constructed of a thermoplastic material comprising polyoxymethylene.Type: GrantFiled: March 15, 2013Date of Patent: April 19, 2016Assignee: Caterpillar Inc.Inventor: James Robert LaHood
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Patent number: 9309651Abstract: Disclosed are various exemplary embodiments of a retainer bushing for use with a lock in a ground engaging tool. The retainer bushing may include a skirt extending around a retainer axis, where the skirt may include an outer surface configured to mate with a lock cavity of the ground engaging tool and an inner surface configured to rotatably receive an outer surface of the lock. The retainer bushing may also include a detent projection extending radially inward from the inner surface with respect to the retainer axis and configured to engage a detent recess of the lock to releasably hold the lock. The detent projection may include a convex surface with a substantially constant radius, and a center of the radius of the convex surface may be positioned at a first distance from the retainer axis that is greater than a second distance between the retainer axis and the outer surface of the skirt.Type: GrantFiled: March 15, 2013Date of Patent: April 12, 2016Assignee: Caterpillar Inc.Inventors: Clifford Otto Jeske, James Robert LaHood
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Publication number: 20150233095Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. In various embodiments, the ground engaging tip is configured for digging into work material in diverse earth moving environments.Type: ApplicationFiled: April 27, 2015Publication date: August 20, 2015Inventors: William J. Renski, James Robert LaHood, Sudha Kottakapu, Thomas Marshall Congdon
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Patent number: 9074350Abstract: Disclosed are various exemplary embodiments of a lock for a ground engaging tool. The lock may include a head portion and a C-shaped skirt extending from the head portion. The skirt may define a lock slot for receiving a portion of a support member to be locked with the ground engaging tool. The skirt may also include an outer surface configured to be rotatably received in an inner surface of a retainer bushing. The outer surface may include a recessed portion that is configured to create a gap between a base surface of the recessed portion and the inner surface of the retainer bushing when the outer surface of the skirt is rotatably received in the inner surface of the retainer bushing.Type: GrantFiled: March 15, 2013Date of Patent: July 7, 2015Assignee: Caterpillar Inc.Inventors: James Robert LaHood, Clifford Otto Jeske
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Patent number: 9062436Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. The adapter nose and an adapter cavity of the tip may be configured with surfaces to increase retention when downward forces are applied to the tip.Type: GrantFiled: October 4, 2012Date of Patent: June 23, 2015Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood
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Patent number: 9057177Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. In various embodiments, the ground engaging tip is configured for digging into work material in diverse earth moving environments.Type: GrantFiled: October 4, 2012Date of Patent: June 16, 2015Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert LaHood, Sudha Kottakapu, Thomas Marshall Congdon
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Publication number: 20150107138Abstract: A ground engaging tip of a tooth assembly for a base edge of a ground engaging implement, is provided, wherein the tooth assembly includes an adapter configured for attachment to a base edge of the ground engaging implement and having a forwardly extending adapter nose. The adapter nose and an adapter cavity of the tip may be configured with surfaces to increase retention when downward forces are applied to the tip.Type: ApplicationFiled: September 22, 2014Publication date: April 23, 2015Applicant: CATERPILLAR, INC.Inventors: William J. Renski, James Robert LaHood
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Patent number: D727367Type: GrantFiled: April 8, 2014Date of Patent: April 21, 2015Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood
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Patent number: D748679Type: GrantFiled: February 12, 2015Date of Patent: February 2, 2016Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood
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Patent number: D748682Type: GrantFiled: February 19, 2015Date of Patent: February 2, 2016Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert LaHood
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Patent number: D749145Type: GrantFiled: February 13, 2015Date of Patent: February 9, 2016Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert LaHood
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Patent number: D784424Type: GrantFiled: December 15, 2015Date of Patent: April 18, 2017Assignee: Caterpillar Inc.Inventors: William J. Renski, James Robert Lahood