Patents by Inventor Christopher St. Clair
Christopher St. Clair 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: 20230265816Abstract: Various embodiments of a vortex hybrid motor are described herein. In some embodiments, the vortex hybrid motor may include a combustion zone defined by a fuel core and/or motor housing. The combustion zone may include an upper zone and a central zone that each contribute to thrust created by the vortex hybrid motor. In some embodiments, an injection port configuration is described that includes a proximal injection port that may be controlled for modulating a delivery of an amount of oxidizer for adjusting an oxidizer-to-fuel ratio. In some embodiments, a fuel core configuration is described that provides radially varying gradients of fuel in order to achieve desired thrust profiles. In some embodiments, the fuel core may include a support structure and/or a proximal end of a nozzle of the vortex hybrid motor may extend into the fuel core.Type: ApplicationFiled: January 30, 2023Publication date: August 24, 2023Inventors: Martin Chiaverini, Patrick D. Satyshur, Christopher St. Clair
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Patent number: 11661907Abstract: Various embodiments of a vortex hybrid motor are described herein. In some embodiments, the vortex hybrid motor may include a combustion zone defined by a fuel core and/or motor housing. The combustion zone may include an upper zone and a central zone that each contribute to thrust created by the vortex hybrid motor. In some embodiments, an injection port configuration is described that includes a proximal injection port that may be controlled for modulating a delivery of an amount of oxidizer for adjusting an oxidizer-to-fuel ratio. In some embodiments, a fuel core configuration is described that provides radially varying gradients of fuel in order to achieve desired thrust profiles. In some embodiments, the fuel core may include a support structure and/or a proximal end of a nozzle of the vortex hybrid motor may extend into the fuel core.Type: GrantFiled: October 11, 2018Date of Patent: May 30, 2023Assignee: Sierra Space CorporationInventors: Martin Chiaverini, Patrick Satyshur, Christopher St. Clair
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Patent number: 11259980Abstract: A soft-inflatable exosuit for knee rehabilitation is fabricated in two different beam-like structures (I and O cross-section actuators) and mechanically characterized for their torque performance in knee-extension assistance. The fabrication procedure of both types of actuators is presented as well as their integration into a light-weight, low-cost and body-conforming interface. To detect the activation duration of the device during the gait cycle, a soft-silicone insole with embedded force-sensitive resistors (FSRs) is used. In evaluation studies, the soft inflatable exosuit device is tested for its ability to reduce muscle activity during the swing phase of the knee. Using sEMG (surface electromyography) sensors, the rectus femoris muscle group of a healthy individual is recorded while walking on a treadmill at a constant speed, with and without the soft device.Type: GrantFiled: July 31, 2018Date of Patent: March 1, 2022Assignees: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, DIGNITY HEALTHInventors: Panagiotis Polygerinos, Saivimal Sridar, Trent Maruyama, Christopher St. Clair, Christina Kwasnica
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Publication number: 20200116106Abstract: Various embodiments of a vortex hybrid motor are described herein. In some embodiments, the vortex hybrid motor may include a combustion zone defined by a fuel core and/or motor housing. The combustion zone may include an upper zone and a central zone that each contribute to thrust created by the vortex hybrid motor. In some embodiments, an injection port configuration is described that includes a proximal injection port that may be controlled for modulating a delivery of an amount of oxidizer for adjusting an oxidizer-to-fuel ratio. In some embodiments, a fuel core configuration is described that provides radially varying gradients of fuel in order to achieve desired thrust profiles. In some embodiments, the fuel core may include a support structure and/or a proximal end of a nozzle of the vortex hybrid motor may extend into the fuel core.Type: ApplicationFiled: October 11, 2018Publication date: April 16, 2020Inventors: Martin Chiaverini, Patrick Satyshur, Christopher St. Clair
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Publication number: 20190029914Abstract: A soft-inflatable exosuit for knee rehabilitation is fabricated in two different beam-like structures (I and O cross-section actuators) and mechanically characterized for their torque performance in knee-extension assistance. The fabrication procedure of both types of actuators is presented as well as their integration into a light-weight, low-cost and body-conforming interface. To detect the activation duration of the device during the gait cycle, a soft-silicone insole with embedded force-sensitive resistors (FSRs) is used. In evaluation studies, the soft inflatable exosuit device is tested for its ability to reduce muscle activity during the swing phase of the knee. Using sEMG (surface electromyography) sensors, the rectus femoris muscle group of a healthy individual is recorded while walking on a treadmill at a constant speed, with and without the soft device.Type: ApplicationFiled: July 31, 2018Publication date: January 31, 2019Inventors: Panagiotis Polygerinos, Saivimal Sridar, Trent Maruyama, Christopher St. Clair, Christina Kwasnica
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Patent number: 6822656Abstract: A sphere mode texture coordinate generator circuit for use in a graphics adapter of a data processing system is disclosed. The circuit includes a set of input multiplexers configured to receive x, y, and z components of a normal vector and a unit vector corresponding to the current vertex. The circuit further includes a set of functional units such as a floating point multiplier, a floating point adder, a floating point compare-to-zero unit, and an inverse square unit. The functional units are configured to receive outputs from the set of multiplexer and are enabled to perform floating point operations on the outputs of the set of multiplexers. A controller or state machine of the circuit is enabled to determine the state of select inputs to each of the set of multiplexers. The controller manages the multiplexer select inputs such that the circuit determines sphere mode texture coordinates in response to receiving the normal vector and the unit vector.Type: GrantFiled: July 13, 2000Date of Patent: November 23, 2004Assignee: International Business Machines CorporationInventors: Joe Christopher St. Clair, Mark Ernest Van Nostrand
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Patent number: 6621495Abstract: A method and apparatus in a geometry engine having a plurality of stages for processing graphics data. An immediate mode data stream is received at a first stage within the plurality of stages. Data from the immediate mode data stream is stored in a storage to build a vertex data structure for processing within the plurality of stages. The vertex data structure is transmitted to the first stage for processing in response to receiving a signal to transmit the vertex data structure. Data for the vertex data structure remains in the storage as default data for a subsequent vertex data structure.Type: GrantFiled: June 8, 2000Date of Patent: September 16, 2003Assignee: International Business Machines CorporationInventors: Russell S. Cook, Joe Christopher St. Clair
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Patent number: 5745493Abstract: A method and system for sequentially addressing multiple components, having a limited number of externally available address lines, on a communication bus. The method and system employs an addressing scheme in combination with a specific interconnection of the components. This combination enables each of the components to be addressed in a sequential fashion by dynamically altering their address. Thus, allowing a virtually unlimited number of components to be coupled to the communication bus without the traditional concerns over the number of externally available address lines.Type: GrantFiled: November 20, 1995Date of Patent: April 28, 1998Assignee: International Business Machines CorporationInventor: Joe Christopher St. Clair
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Patent number: 5640570Abstract: An information handling system includes one or more processors, a system bus or network connecting the processors, a memory system connected to the system bus, an asynchronous signal controller connected to the system bus, one or more I/O bridges connected to the system bus, an I/O bus connected to each I/O bridge, one or more devices connected to the I/O bus, including perhaps another I/O-bus-to-I/O-bus bridge where additional devices may be connected to a second I/O bus, wherein the first or host bridge includes remote interrupt control logic having a register wherein an input to each position in the register is from one of the I/O devices downstream from the host bridge, and a shadow register address buffer, both under the control of a sample circuit connected to outputs of the register such that when a change in any register position is detected by the sample circuit, the entire contents of the register are sent to the shadow register indicated in the shadow register address buffer by a processor bypass tType: GrantFiled: January 26, 1996Date of Patent: June 17, 1997Assignee: International Business Machines CorporationInventors: Joe Christopher St. Clair, Steven Mark Thurber