Patents by Inventor David S. Hoffman
David S. Hoffman 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: 11640999Abstract: An x-ray detector can be small and have efficient cooling. In one embodiment, the x-ray detector can comprise a thermoelectric cooler (TEC) with upper electrical connections, a support, a cap, and a silicon drift detector (SDD). A planar side of the support can be directly affixed to upper electrical connections of the TEC. The support can have a non-planar side, opposite of the planar side, with a raised structure. A bottom face of the cap can be affixed to the raised structure, forming a cavity between the cap and the non-planar side of the support. The SDD can be affixed to a top face of the cap. In another embodiment, the non-planar side of the support can face the TEC. In another embodiment, a PIN photodiode can be directly affixed to a plate and the plate directly affixed to upper electrical connections of the TEC.Type: GrantFiled: June 17, 2022Date of Patent: May 2, 2023Assignee: Moxtek, Inc.Inventors: Jason Maynard, Shawn S. Chin, Jonathan Barron, David S. Hoffman
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Patent number: 11545333Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.Type: GrantFiled: November 2, 2021Date of Patent: January 3, 2023Assignee: Moxtek, Inc.Inventors: David S. Hoffman, Vincent F. Jones, Eric Miller
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Publication number: 20220320353Abstract: An x-ray detector can be small and have efficient cooling. In one embodiment, the x-ray detector can comprise a thermoelectric cooler (TEC) with upper electrical connections, a support, a cap, and a silicon drift detector (SDD). A planar side of the support can be directly affixed to upper electrical connections of the TEC. The support can have a non-planar side, opposite of the planar side, with a raised structure. A bottom face of the cap can be affixed to the raised structure, forming a cavity between the cap and the non-planar side of the support. The SDD can be affixed to a top face of the cap. In another embodiment, the non-planar side of the support can face the TEC. In another embodiment, a PIN photodiode can be directly affixed to a plate and the plate directly affixed to upper electrical connections of the TEC.Type: ApplicationFiled: June 17, 2022Publication date: October 6, 2022Inventors: Jason Maynard, Shawn S. Chin, Jonathan Barron, David S. Hoffman
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Patent number: 11398573Abstract: An x-ray detector can be small and have efficient cooling. In one embodiment, the x-ray detector can comprise a thermoelectric cooler (TEC) with upper electrical connections, a support, a cap, and a silicon drift detector (SDD). A planar side of the support can be directly affixed to upper electrical connections of the TEC. The support can have a non-planar side, opposite of the planar side, with a raised structure. A bottom face of the cap can be affixed to the raised structure, forming a cavity between the cap and the non-planar side of the support. The SDD can be affixed to a top face of the cap. In another embodiment, the non-planar side of the support can face the TEC. In another embodiment, a PIN photodiode can be directly affixed to a plate and the plate directly affixed to upper electrical connections of the TEC.Type: GrantFiled: September 6, 2019Date of Patent: July 26, 2022Assignee: Moxtek, IncInventors: Jason Maynard, Shawn S. Chin, Jonathan Barron, David S. Hoffman
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Publication number: 20220059308Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.Type: ApplicationFiled: November 2, 2021Publication date: February 24, 2022Inventors: David S. Hoffman, Vincent F. Jones, Eric Miller
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Patent number: 11195687Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.Type: GrantFiled: February 22, 2021Date of Patent: December 7, 2021Assignee: Moxtek, Inc.Inventors: David S. Hoffman, Vincent F. Jones, Eric Miller
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Publication number: 20210175045Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.Type: ApplicationFiled: February 22, 2021Publication date: June 10, 2021Inventors: David S. Hoffman, Vincent F. Jones, Eric Miller
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Patent number: 10964507Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.Type: GrantFiled: April 17, 2019Date of Patent: March 30, 2021Assignee: Moxtek, Inc.Inventors: David S. Hoffman, Vincent F. Jones, Eric Miller
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Patent number: 10945329Abstract: In order to reduce the amount of electrical insulation needed for voltage isolation of large voltages generated by a voltage multiplier, the voltage multiplier can be shaped to smooth out electric field gradients. The voltage multiplier can comprise multiple sections, each section located in a different plane. The voltage multiplier can comprise a negative voltage multiplier and a positive voltage multiplier, each inclined at different angles with respect to each other. The voltage multiplier can include a curved shape.Type: GrantFiled: October 30, 2019Date of Patent: March 9, 2021Assignee: Moxtek, Inc.Inventors: Eric Miller, David S. Hoffman, Vincent F. Jones
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Publication number: 20200105948Abstract: An x-ray detector can be small and have efficient cooling. In one embodiment, the x-ray detector can comprise a thermoelectric cooler (TEC) with upper electrical connections, a support, a cap, and a silicon drift detector (SDD). A planar side of the support can be directly affixed to upper electrical connections of the TEC. The support can have a non-planar side, opposite of the planar side, with a raised structure. A bottom face of the cap can be affixed to the raised structure, forming a cavity between the cap and the non-planar side of the support. The SDD can be affixed to a top face of the cap. In another embodiment, the non-planar side of the support can face the TEC. In another embodiment, a PIN photodiode can be directly affixed to a plate and the plate directly affixed to upper electrical connections of the TEC.Type: ApplicationFiled: September 6, 2019Publication date: April 2, 2020Inventors: Jason Maynard, Shawn S. Chin, Jonathan Barron, David S. Hoffman
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Patent number: 10602600Abstract: An x-ray source can include a housing with material with an atomic number of ?42 and a thermal conductivity of ?3 W/(m*K) to assist in removing heat from the x-ray source and to block x-rays emitted in undesirable directions. An x-ray source can include a shell that is electrically conductive and that encloses at least part of a voltage multiplier without enclosing a control circuit to minimize or eliminate electromagnetic interference in the control circuitry caused by the voltage multiplier. An x-ray source can include a negative voltage multiplier, a positive voltage multiplier, and a ground plane between the negative voltage multiplier and the positive voltage multiplier. The ground plane can minimize or eliminate electromagnetic interference between the negative voltage multiplier and the positive voltage multiplier. An air-filled channel, associated with the ground plane, can reduce weight of the x-ray source.Type: GrantFiled: October 29, 2018Date of Patent: March 24, 2020Assignee: Moxtek, Inc.Inventors: Ricky B. Steck, Gordon Ernest Smith, Eric Miller, David S. Hoffman
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Publication number: 20200068693Abstract: In order to reduce the amount of electrical insulation needed for voltage isolation of large voltages generated by a voltage multiplier, the voltage multiplier can be shaped to smooth out electric field gradients. The voltage multiplier can comprise multiple sections, each section located in a different plane. The voltage multiplier can comprise a negative voltage multiplier and a positive voltage multiplier, each inclined at different angles with respect to each other. The voltage multiplier can include a curved shape.Type: ApplicationFiled: October 30, 2019Publication date: February 27, 2020Inventors: Eric Miller, David S. Hoffman, Vincent F. Jones
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Patent number: 10499484Abstract: In order to reduce the amount of electrical insulation needed for voltage isolation of large voltages generated by a voltage multiplier, the voltage multiplier can be shaped to smooth out electric field gradients. The voltage multiplier can comprise multiple sections, each section located in a different plane. The voltage multiplier can comprise a negative voltage multiplier and a positive voltage multiplier, each inclined at different angles with respect to each other. The voltage multiplier can include a curved shape.Type: GrantFiled: September 26, 2018Date of Patent: December 3, 2019Assignee: Moxtek, Inc.Inventors: Eric Miller, David S. Hoffman, Vincent F. Jones
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Publication number: 20190348249Abstract: A shield around an x-ray tube, a voltage multiplier, or both can improve the manufacturing process by allowing testing earlier in the process and by providing a holder for liquid potting material. The shield can also improve voltage standoff. A shielded x-ray tube can be electrically coupled to a shielded power supply.Type: ApplicationFiled: April 17, 2019Publication date: November 14, 2019Inventors: David S. Hoffman, Vincent F. Jones, Eric Miller
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Publication number: 20190182943Abstract: An x-ray source can include a housing with material with an atomic number of 42 and a thermal conductivity of ?3 W/(m*K) to assist in removing heat from the x-ray source and to block x-rays emitted in undesirable directions. An x-ray source can include a shell that is electrically conductive and that encloses at least part of a voltage multiplier without enclosing a control circuit to minimize or eliminate electromagnetic interference in the control circuitry caused by the voltage multiplier. An x-ray source can include a negative voltage multiplier, a positive voltage multiplier, and a ground plane between the negative voltage multiplier and the positive voltage multiplier. The ground plane can minimize or eliminate electromagnetic interference between the negative voltage multiplier and the positive voltage multiplier. An air-filled channel, associated with the ground plane, can reduce weight of the x-ray source.Type: ApplicationFiled: October 29, 2018Publication date: June 13, 2019Inventors: Ricky B. Steck, Gordon Ernest Smith, Eric Miller, David S. Hoffman
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Publication number: 20190150257Abstract: In order to reduce the amount of electrical insulation needed for voltage isolation of large voltages generated by a voltage multiplier, the voltage multiplier can be shaped to smooth out electric field gradients. The voltage multiplier can comprise multiple sections, each section located in a different plane. The voltage multiplier can comprise a negative voltage multiplier and a positive voltage multiplier, each inclined at different angles with respect to each other. The voltage multiplier can include a curved shape.Type: ApplicationFiled: September 26, 2018Publication date: May 16, 2019Inventors: Eric Miller, David S. Hoffman, Vincent F. Jones
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Patent number: 7511624Abstract: The present invention provides systems and methods using a temporal-frequency sensitive receiver to detect laser light that is scattered by an oscillating object, thereby allowing remote monitoring of the object's position and movement.Type: GrantFiled: January 25, 2006Date of Patent: March 31, 2009Assignee: Montana State UniversityInventors: Joseph A. Shaw, Kevin S. Repasky, John L. Carlsten, Lee H. Spangler, David S. Hoffman
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Patent number: 4357049Abstract: A recliner chair having a seat and backrest rigidly interconnected to move as a unit and being mounted on a stationary frame for movement into reclining positions by the chair occupant pulling-off the armrests which are included as part of the stationary frame. The footrest mechanism is actuated to extended position when the seat and backrest unit is moved into reclining position by means of the linkage mechanisms which mount the seat and backrest unit to the main frame; the latter being effected through a drive transmission linkage interconnecting the footrest mechanism with the mounting mechanism of the seat and backrest unit. The footrest mechanism provides dual footrest or leg supports which are positioned generally in vertical planes one behind the other at the front of the chair when in the retracted position.Type: GrantFiled: August 12, 1980Date of Patent: November 2, 1982Inventors: Walter C. Rogers, Jr., David S. Hoffman
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Patent number: 4337977Abstract: A three-way, handle-operated, wall-avoiding, recliner chair with dual footrests. From closed position, the chair is operated to TV position by means of a handle connected to the footrest mechanism. The handle is also connected to a rear seat mounting link to move the seat forwardly to the base during which time a restraining mechanism prevents the backrest from moving relative to the seat. Once in the TV position, the restraining mechanism is no longer effective, and the occupant may exert pressure on the backrest to recline the seat further relative to the base while also moving the backrest forwardly relative to the seat as well as the base to avoid striking any nearby wall. Novel linkage mechanisms are provided for carrying out the above, and a spring mechanism is provided to lock the footrest closed against inadvertent actuation such as when the chair is being relocated and is being pulled by its armrests.Type: GrantFiled: September 12, 1980Date of Patent: July 6, 1982Assignee: Royal Development Company, Inc.Inventors: Walter C. Rogers, Jr., David S. Hoffman
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Patent number: 4226469Abstract: A handle-operated recliner chair has a seat mounting linkage consisting of two mounting links mounting the seat directly to a stationary base for movement between normal and reclining positions. A footrest is mounted to the front of the seat by a footrest linkage which is extended and retracted through means of a handle mounted relative to the seat to rotate a torque tube which is connected to the footrest linkage to operate the same. One of the links of the footrest linkage is directly connected to the front mounting link of the seat such that extension of the footrest will cause the seat mounting links to pivot forwardly to not only place the seat in an inclined position but also, to move the seat forwardly relative to the base to provide wall-avoiding action which comes in to play when the backrest is reclined to avoid striking a nearby wall with the backrest.Type: GrantFiled: January 23, 1979Date of Patent: October 7, 1980Assignee: Royal Development Company, Inc.Inventors: Walter C. Rogers, Jr., David S. Hoffman