Patents by Inventor Gregor J. S. McDowall
Gregor J. S. McDowall 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: 7086137Abstract: A rotor and a method of constructing a rotor are disclosed. The rotor includes a hub that is capable of being supported by a shaft that extends along an axis, a plurality of laminations, and a plurality of wire windings supported by the plurality of laminations. The hub includes an inner structure configured to support the hub relative to the shaft, an outer structure that supports the laminations, and an intermediate structure that is coupled to the inner and outer structures and supports the inner and outer structures relative to one another.Type: GrantFiled: March 5, 2004Date of Patent: August 8, 2006Assignee: Honeywell International, Inc.Inventors: Gerald E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P. J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J. S. McDowall
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Patent number: 6979929Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.Type: GrantFiled: June 15, 2004Date of Patent: December 27, 2005Assignee: Honeywell International, Inc.Inventors: Gerald E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P. J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J. S. McDowall
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Patent number: 6859019Abstract: A system and method for electrically coupling windings of a main generator rotor to a plurality of DC sources on an exciter that each have respective first-voltage and second-voltage terminals is disclosed. The system includes first and second conductive plates supported by the rotor that respectively define first and second apertures that surround a rotor shaft. The first plate includes a first rotor winding terminal by which the plate is electrically coupled to the windings, and a first plurality of terminals configured to be respectively coupled to the first-voltage terminals of the DC sources. The second plate is electrically insulated from the first plate, includes a second rotor winding terminal by which the second plate is electrically coupled to the windings, and includes a second plurality of terminals configured to be respectively coupled to the second-voltage terminals of the DC sources.Type: GrantFiled: August 30, 2001Date of Patent: February 22, 2005Assignee: Honeywell International, Inc.Inventors: Gerald E. Tornquist, Raymond W. Borden, James D. Lengel, Ming Xu, Kieran P. J. Doherty, Gregor J. S. McDowall
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Patent number: 6849987Abstract: A new improved system and method for end turn retention for wires on a generator rotor for use in high speed applications such as in aircraft applications. The rotor includes a shaft, spokes, supports, and wire winding coils, and at least one cap device. The spokes extend radially outwardly from the shaft, and each support is positioned on an associated spoke. Each coil wraps around an associated support and spoke. Each cap device is coupled to an end of its associated spoke to prevent the windings from moving radially outwardly while the rotor spins. Each support is coupled to an associated cap device, and includes at its radially inward edge a flange protruding away from the respective spoke. Because of the flange and the cap device, slack of the wire coil between the flange and the associated cap is taken up.Type: GrantFiled: January 9, 2004Date of Patent: February 1, 2005Assignee: Honeywell International Inc.Inventors: Gerald E. Tornquist, Gregor J. S. McDowall, Mingzhou Xu, Kieran P. J. Doherty, Jim Lengel
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Publication number: 20040232795Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.Type: ApplicationFiled: June 15, 2004Publication date: November 25, 2004Inventors: G. E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P.J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J.S. McDowall
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Patent number: 6791230Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.Type: GrantFiled: September 7, 2001Date of Patent: September 14, 2004Assignee: Honeywell International, Inc.Inventors: Gerald E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P. J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J. S. McDowall
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Publication number: 20040168301Abstract: A rotor and a method of constructing a rotor are disclosed. The rotor includes a hub that is capable of being supported by a shaft that extends along an axis, a plurality of laminations, and a plurality of wire windings supported by the plurality of laminations. The hub includes an inner structure configured to support the hub relative to the shaft, an outer structure that supports the laminations, and an intermediate structure that is coupled to the inner and outer structures and supports the inner and outer structures relative to one another.Type: ApplicationFiled: March 5, 2004Publication date: September 2, 2004Inventors: G.E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P.J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J.S. McDowall
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Publication number: 20040140727Abstract: A new improved system and method for end turn retention for wires on a generator rotor for use in high speed applications such as in aircraft applications. The rotor includes a shaft, spokes, supports, and wire winding coils, and at least one cap device. The spokes extend radially outwardly from the shaft, and each support is positioned on an associated spoke. Each coil wraps around an associated support and spoke. Each cap device is coupled to an end of its associated spoke to prevent the windings from moving radially outwardly while the rotor spins. Each support is coupled to an associated cap device, and includes at its radially inward edge a flange protruding away from the respective spoke. Because of the flange and the cap device, slack of the wire coil between the flange and the associated cap is taken up.Type: ApplicationFiled: January 9, 2004Publication date: July 22, 2004Inventors: Gerald E. Tornquist, Gregor J.S. McDowall, Mingzhou Xu, Kieran P.J. Doherty, Jim Lengel
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Patent number: 6753637Abstract: A rotor and a method of constructing a rotor are disclosed. The rotor includes a hub that is capable of being supported by a shaft that extends along an axis, a plurality of laminations, and a plurality of wire windings supported by the plurality of laminations. The hub includes an inner structure configured to support the hub relative to the shaft, an outer structure that supports the laminations, and an intermediate structure that is coupled to the inner and outer structures and supports the inner and outer structures relative to one another.Type: GrantFiled: September 7, 2001Date of Patent: June 22, 2004Assignee: Honeywell International, Inc.Inventors: Gerald E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P. J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J. S. McDowall
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Patent number: 6727634Abstract: A new improved system and method for end turn retention for wires on a generator rotor for use in high speed applications such as in aircraft applications. The rotor includes a shaft, spokes, supports, and wire winding coils, and at least one cap device. The spokes extend radially outwardly from the shaft, and each support is positioned on an associated spoke. Each coil wraps around an associated support and spoke. Each cap device is coupled to an end of its associated spoke to prevent the windings from moving radially outwardly while the rotor spins. Each support is coupled to an associated cap device, and includes at its radially inward edge a flange protruding away from the respective spoke. Because of the flange and the cap device, slack of the wire coil between the flange and the associated cap is taken up.Type: GrantFiled: August 30, 2001Date of Patent: April 27, 2004Assignee: Honeywell International, Inc.Inventors: Gerald E. Tornquist, Gregor J. S. McDowall, Mingzhou Xu, Kieran P. J. Doherty, Jim Lengel
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Publication number: 20030048015Abstract: A rotor with wedges and a method of retaining wedges in a rotor are disclosed. The rotor includes a shaft, first and second poles extending radially from the shaft, and first and second coils of windings respectively wrapped around the first and second poles. Each coil includes a respective outer face including two end portions and two side portions, and a respective inward-facing edge including two end sections and two side sections. The rotor further includes a first outer wedge positioned between neighboring side portions of the first and second coils, and a first inner wedge positioned between neighboring side sections of the first and second coils. The first inner wedge is coupled to the first outer wedge so that the first outer wedge is at least partly retained from moving radially outward away from the shaft.Type: ApplicationFiled: September 7, 2001Publication date: March 13, 2003Inventors: G.E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P.J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J.S. McDowall
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Publication number: 20030048020Abstract: A rotor and a method of constructing a rotor are disclosed. The rotor includes a hub that is capable of being supported by a shaft that extends along an axis, a plurality of laminations, and a plurality of wire windings supported by the plurality of laminations. The hub includes an inner structure configured to support the hub relative to the shaft, an outer structure that supports the laminations, and an intermediate structure that is coupled to the inner and outer structures and supports the inner and outer structures relative to one another.Type: ApplicationFiled: September 7, 2001Publication date: March 13, 2003Inventors: G.E. Tornquist, James D. Lengel, Raymond W. Borden, Kieran P.J. Doherty, Ming Xu, WuenFar L. Chen, Gregor J.S. McDowall
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Publication number: 20030042810Abstract: A system and method for electrically coupling windings of a main generator rotor to a plurality of DC sources on an exciter that each have respective first-voltage and second-voltage terminals is disclosed. The system includes first and second conductive plates supported by the rotor that respectively define first and second apertures that surround a rotor shaft. The first plate includes a first rotor winding terminal by which the plate is electrically coupled to the windings, and a first plurality of terminals configured to be respectively coupled to the first-voltage terminals of the DC sources. The second plate is electrically insulated from the first plate, includes a second rotor winding terminal by which the second plate is electrically coupled to the windings, and includes a second plurality of terminals configured to be respectively coupled to the second-voltage terminals of the DC sources.Type: ApplicationFiled: August 30, 2001Publication date: March 6, 2003Inventors: G.E. Tornquist, Raymond W. Borden, James D. Lengel, Ming Xu, Kieran P.J. Doherty, Gregor J.S. McDowall
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Publication number: 20030042818Abstract: A new improved system and method for end turn retention for wires on a generator rotor for use in high speed applications such as in aircraft applications. The rotor includes a shaft, spokes, supports, and wire winding coils, and at least one cap device. The spokes extend radially outwardly from the shaft, and each support is positioned on an associated spoke. Each coil wraps around an associated support and spoke. Each cap device is coupled to an end of its associated spoke to prevent the windings from moving radially outwardly while the rotor spins. Each support is coupled to an associated cap device, and includes at its radially inward edge a flange protruding away from the respective spoke. Because of the flange and the cap device, slack of the wire coil between the flange and the associated cap is taken up.Type: ApplicationFiled: August 30, 2001Publication date: March 6, 2003Inventors: G.E. Tornquist, James D. Lengel, Kieran P.J. Doherty, Gregor J.S. McDowall