Patents by Inventor James E. Sobel
James E. Sobel 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: 20210403168Abstract: A hybrid propulsion system for a tiltrotor aircraft comprises one or more engines that provide thrust whenever the tiltrotor aircraft is in a first forward flight mode, one or more electrical or hydraulic power sources, and two or more pylon assemblies. Each pylon assembly houses one or more electric or hydraulic motors connected to the one or more electrical or hydraulic power sources and a proprotor. All or part of each pylon assembly is rotatable. The proprotors provide lift whenever the tiltrotor aircraft is in a vertical takeoff and landing mode and a hover mode, and provide thrust whenever the tiltrotor aircraft is in a second forward flight mode.Type: ApplicationFiled: June 29, 2020Publication date: December 30, 2021Inventors: Thomas Dewey Parsons, James E. Sobel, Alan Hisashi Steinert, David Henderson Loe
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Patent number: 9676478Abstract: In some aspects, a master cylinder assembly for vertical lift aircraft is configured to move pressurized fluid through a conduit in response to applied movement of an input lever. A low pressure relief valve can be connected to a first conduit to limit pressure to a low level. An isolation valve can be connected to the first conduit and configured to isolate the low pressure relief valve from the conduit when engaged. A high pressure relief valve can be connected to a second fluid conduit to limit pressure to a high level. In some aspects, a rotor brake actuator is fluidly connected to the first conduit and the second conduit and configured to engage a rotor brake in response to hydraulic fluid pressure.Type: GrantFiled: April 13, 2015Date of Patent: June 13, 2017Assignee: BELL HELICOPTER TEXTRON INC.Inventors: Carl T. Elving, James E. Sobel, Michael Pujol
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Patent number: 9399984Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons, a second plurality of pistons, a first cam, a second cam, and a cam rotation device. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The first cam is disposed about the first plurality of radially extending cylinders. The second cam is disposed about the second plurality of radially extending cylinders. The cam rotation device is coupled to the first cam and the second cam. The cam rotation device is operable to rotate the first cam in a first direction and the second cam in a second direction.Type: GrantFiled: June 25, 2012Date of Patent: July 26, 2016Assignee: Bell Helicopter Textron Inc.Inventors: Carlos A. Fenny, James E. Sobel
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Patent number: 9303638Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons, a second plurality of pistons, a first cam, a second cam, and a coupling device. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The first cam is disposed about the first plurality of radially extending cylinders. The second cam is disposed about the second plurality of radially extending cylinders. The coupling device is operable to couple the cylinder block to a cylinder block of a second radial fluid device.Type: GrantFiled: June 25, 2012Date of Patent: April 5, 2016Assignee: Bell Helicopter Textron Inc.Inventors: Carlos A. Fenny, James E. Sobel
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Patent number: 9228571Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons including a first piston, and a second plurality of pistons including a second piston. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The second piston is configurable to begin its stroke at a different time relative to the first piston within the first cylinder pair.Type: GrantFiled: June 25, 2012Date of Patent: January 5, 2016Assignee: Bell Helicopter Textron Inc.Inventors: Carlos A. Fenny, James E. Sobel
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Publication number: 20150259064Abstract: In some aspects, a master cylinder assembly for vertical lift aircraft is configured to move pressurized fluid through a conduit in response to applied movement of an input lever. A low pressure relief valve can be connected to a first conduit to limit pressure to a low level. An isolation valve can be connected to the first conduit and configured to isolate the low pressure relief valve from the conduit when engaged. A high pressure relief valve can be connected to a second fluid conduit to limit pressure to a high level. In some aspects, a rotor brake actuator is fluidly connected to the first conduit and the second conduit and configured to engage a rotor brake in response to hydraulic fluid pressure.Type: ApplicationFiled: April 13, 2015Publication date: September 17, 2015Inventors: Carl T. Elving, James E. Sobel, Michael Pujol
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Patent number: 9004614Abstract: In some aspects, a master cylinder assembly for vertical lift aircraft is configured to move pressurized fluid through a conduit in response to applied movement of an input lever. A low pressure relief valve can be connected to a first conduit to limit pressure to a low level. An isolation valve can be connected to the first conduit and configured to isolate the low pressure relief valve from the conduit when engaged. A high pressure relief valve can be connected to a second fluid conduit to limit pressure to a high level. In some aspects, a rotor brake actuator is fluidly connected to the first conduit and the second conduit and configured to engage a rotor brake in response to hydraulic fluid pressure.Type: GrantFiled: September 25, 2013Date of Patent: April 14, 2015Assignee: Bell Helicopter Textron Inc.Inventors: Carl T. Elving, James E. Sobel, Michael Pujol
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Publication number: 20150084403Abstract: In some aspects, a master cylinder assembly for vertical lift aircraft is configured to move pressurized fluid through a conduit in response to applied movement of an input lever. A low pressure relief valve can be connected to a first conduit to limit pressure to a low level. An isolation valve can be connected to the first conduit and configured to isolate the low pressure relief valve from the conduit when engaged. A high pressure relief valve can be connected to a second fluid conduit to limit pressure to a high level. In some aspects, a rotor brake actuator is fluidly connected to the first conduit and the second conduit and configured to engage a rotor brake in response to hydraulic fluid pressure.Type: ApplicationFiled: September 25, 2013Publication date: March 26, 2015Inventors: Carl T. Elving, James E. Sobel, Michael Pujol
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Publication number: 20130343915Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons, a second plurality of pistons, a first cam, a second cam, and a cam rotation device. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The first cam is disposed about the first plurality of radially extending cylinders. The second cam is disposed about the second plurality of radially extending cylinders. The cam rotation device is coupled to the first cam and the second cam. The cam rotation device is operable to rotate the first cam in a first direction and the second cam in a second direction.Type: ApplicationFiled: June 25, 2012Publication date: December 26, 2013Applicant: BELL HELICOPTER TEXTRON INC.Inventors: Carlos A. Fenny, James E. Sobel
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Publication number: 20130343923Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons, a second plurality of pistons, a first cam, a second cam, and a coupling device. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The first cam is disposed about the first plurality of radially extending cylinders. The second cam is disposed about the second plurality of radially extending cylinders. The coupling device is operable to couple the cylinder block to a cylinder block of a second radial fluid device.Type: ApplicationFiled: June 25, 2012Publication date: December 26, 2013Applicant: BELL HELICOPTER TEXTRON INC.Inventors: Carlos A. Fenny, James E. Sobel
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Publication number: 20130343914Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons including a first piston, and a second plurality of pistons including a second piston. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The second piston is configurable to begin its stroke at a different time relative to the first piston within the first cylinder pair.Type: ApplicationFiled: June 25, 2012Publication date: December 26, 2013Applicant: BELL HELICOPTER TEXTRON INC.Inventors: Carlos A. Fenny, James E. Sobel