Patents by Inventor Paul A. Leggott
Paul A. Leggott 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: 20230358299Abstract: The present disclosure provides a captive sprocket system for an engine, comprising: a sprocket including a first sprocket gear, a second sprocket gear and a retaining disc having a diameter and a thickness; a cylinder block having a bore with a central opening and a plurality of threaded bosses, the plurality of threaded bosses together forming an axial support surface and a radial location surface, the axial support surface and the radial location surface being sized to receive the retaining disc of the sprocket to support and locate the sprocket; and a plurality of captivation screws configured to be received by the plurality of threaded bosses, each captivation screw having a head with a lower surface which, when the captivation screw is received by a threaded boss, overlies the retaining disc and retains the sprocket in the bore.Type: ApplicationFiled: July 20, 2023Publication date: November 9, 2023Inventors: James A. Dods, Michael J. Cooper, Paul A. Leggott, Graham Dowson
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Patent number: 11746859Abstract: The present disclosure provides a captive sprocket system for an engine, comprising: a sprocket including a first sprocket gear, a second sprocket gear and a retaining disc having a diameter and a thickness; a cylinder block having a bore with a central opening and a plurality of threaded bosses, the plurality of threaded bosses together forming an axial support surface and a radial location surface, the axial support surface and the radial location surface being sized to receive the retaining disc of the sprocket to support and locate the sprocket; and a plurality of captivation screws configured to be received by the plurality of threaded bosses, each captivation screw having a head with a lower surface which, when the captivation screw is received by a threaded boss, overlies the retaining disc and retains the sprocket in the bore.Type: GrantFiled: May 23, 2019Date of Patent: September 5, 2023Assignee: CUMMINS INC.Inventors: James A. Dods, Michael J. Cooper, Paul A. Leggott, Graham Dowson
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Publication number: 20210207690Abstract: The present disclosure provides a captive sprocket system for an engine, comprising: a sprocket including a first sprocket gear, a second sprocket gear and a retaining disc having a diameter and a thickness; a cylinder block having a bore with a central opening and a plurality of threaded bosses, the plurality of threaded bosses together forming an axial support surface and a radial location surface, the axial support surface and the radial location surface being sized to receive the retaining disc of the sprocket to support and locate the sprocket; and a plurality of captivation screws configured to be received by the plurality of threaded bosses, each captivation screw having a head with a lower surface which, when the captivation screw is received by a threaded boss, overlies the retaining disc and retains the sprocket in the bore.Type: ApplicationFiled: May 23, 2019Publication date: July 8, 2021Inventors: James A. Dods, Michael J. Cooper, Paul A. Leggott, Graham Dowson
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Patent number: 8984972Abstract: A power take-off system for an internal combustion engine that has a drive gear positioned within a crankcase includes a housing. The housing is coupleable to the internal combustion engine. The system also includes an input gear with a drive gear engagement portion, a toothed portion, and a shaft extending between the drive gear engagement portion and the toothed portion. The input gear is coupled to the housing such that the driver gear engagement portion is positioned within the crank case and the toothed portion is positioned within the housing. The input gear also includes a vent conduit that extends through the shaft. The vent conduit includes a first end open to the housing and a second end open to the crankcase.Type: GrantFiled: January 11, 2013Date of Patent: March 24, 2015Assignee: Cummins IP, Inc.Inventors: Paul A. Leggott, Jack R. Johnson
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Publication number: 20140196551Abstract: A power take-off system for an internal combustion engine that has a drive gear positioned within a crankcase includes a housing. The housing is coupleable to the internal combustion engine. The system also includes an input gear with a drive gear engagement portion, a toothed portion, and a shaft extending between the drive gear engagement portion and the toothed portion. The input gear is coupled to the housing such that the driver gear engagement portion is positioned within the crank case and the toothed portion is positioned within the housing. The input gear also includes a vent conduit that extends through the shaft. The vent conduit includes a first end open to the housing and a second end open to the crankcase.Type: ApplicationFiled: January 11, 2013Publication date: July 17, 2014Applicant: CUMMINS IP, INC.Inventors: Paul A. Leggott, Jack R. Johnson
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Patent number: 8375550Abstract: A quick to connect and quick to disconnect fluid coupling includes a clip, a male stem having an annular clip groove adapted to receive the clip, a female port having a step groove adapted to receive the clip upon insertion of the stem into the port, and a sleeve slideably disposed about the stem adapted to abut the clip and minimize shuttling of the stem within the port. The sleeve may be biased toward the clip by a dust seal abutting a shoulder of the sleeve distal from a lead-in end of the sleeve abutting the clip. Also, the sleeve may radially retain the clip, compressed in an annular groove of the stem, and/or the sleeve abutting the clip may stabilize the clip and axially align the clip with the stem, for insertion of the stem into the port.Type: GrantFiled: March 16, 2011Date of Patent: February 19, 2013Assignee: The Gates CorporationInventors: Jonathan Clark Swift, Paul Leggott
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Publication number: 20110162190Abstract: A quick to connect and quick to disconnect fluid coupling includes a clip, a male stem having an annular clip groove adapted to receive the clip, a female port having a step groove adapted to receive the clip upon insertion of the stem into the port, and a sleeve slideably disposed about the stem adapted to abut the clip and minimize shuttling of the stem within the port. The sleeve may be biased toward the clip by a dust seal abutting a shoulder of the sleeve distal from a lead-in end of the sleeve abutting the clip. Also, the sleeve may radially retain the clip, compressed in an annular groove of the stem, and/or the sleeve abutting the clip may stabilize the clip and axially align the clip with the stem, for insertion of the stem into the port.Type: ApplicationFiled: March 16, 2011Publication date: July 7, 2011Applicant: The Gates CorporationInventors: Jonathan Clark Swift, Paul Leggott
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Patent number: 7963570Abstract: A quick to connect and quick to disconnect fluid coupling includes a clip, a male stem having an annular clip groove adapted to receive the clip, a female port having a step groove adapted to receive the clip upon insertion of the stem into the port, and a sleeve slideably disposed about the stem adapted to abut the clip and minimize shuttling of the stem within the port. The sleeve may be biased toward the clip by a dust seal abutting a shoulder of the sleeve distal from a lead-in end of the sleeve abutting the clip. Also, the sleeve may radially retain the clip, compressed in an annular groove of the stem, and/or the sleeve abutting the clip may stabilize the clip and axially align the clip with the stem, for insertion of the stem into the port.Type: GrantFiled: October 13, 2006Date of Patent: June 21, 2011Assignee: The Gates CorporationInventors: Jonathan Clark Swift, Paul Leggott
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Publication number: 20070145742Abstract: A quick to connect and quick to disconnect fluid coupling includes a clip, a male stem having an annular clip groove adapted to receive the clip, a female port having a step groove adapted to receive the clip upon insertion of the stem into the port, and a sleeve slideably disposed about the stem adapted to abut the clip and minimize shuttling of the stem within the port. The sleeve may be biased toward the clip by a dust seal abutting a shoulder of the sleeve distal from a lead-in end of the sleeve abutting the clip. Also, the sleeve may radially retain the clip, compressed in an annular groove of the stem, and/or the sleeve abutting the clip may stabilize the clip and axially align the clip with the stem, for insertion of the stem into the port.Type: ApplicationFiled: October 13, 2006Publication date: June 28, 2007Inventors: Jonathan Swift, Paul Leggott