Andrews, UT
David A. Andrews, Draper, UT US
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20090098230 | NUTRACEUTICAL MORINGA COMPOSITION - The present invention incorporates portions from the | 04-16-2009 |
Gregory Andrews, Draper, UT US
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20090080617 | APERTURE SHIELD INCORPORATING REFRACTORY MATERIALS - An x-ray tube electron shield is disclosed for interposition between an electron emitter and an anode configured to receive the emitted electrons. The electron shield is configured to withstand the elevated levels of heat produced by electrons backscattered from the anode and incident on the electron shield. This in turn equates to a reduced incidence of failure in the electron shield. In one embodiment the electron shield includes a body that defines a bowl-shaped aperture having a narrowed throat segment. The body of the electron shield includes a first body portion, a second body portion, and a disk portion. These portions cooperate to define the bowl and the throat segment. The throat segment and the lower portion of the bowl are composed of a refractory material and correspond with the regions of the electron shield that are impacted by relatively more backscattered electrons from the anode surface. | 03-26-2009 |
Gregory C. Andrews, Draper, UT US
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20080273668 | MECHANICAL INTERFACE ASSEMBLY - A mechanical interface assembly that includes an adjustable element having first and second states such that in the first state, the adjustable element is radially compliant, and in the second state, the adjustable element is substantially non-radially compliant. The adjustable element also includes a mating element configured to interface with a mating component. The mechanical interface assembly further includes an adjustment element configured to interface with the adjustable element such that a first position of the adjustment element corresponds to the first state of the adjustable element, and a second position of the adjustment element corresponds to the second state of the adjustable element. | 11-06-2008 |
20090086917 | X-RAY TUBE COOLING SYSTEM - X-ray tube cooling systems. In one example embodiment, an x-ray tube includes a housing, a window frame attached to the housing, and a window attached to the window frame. The housing defines an aperture through which electrons can pass from a cathode to an anode. The housing also defines an inlet port and an outlet port. The window frame defines an opening through which x-rays can pass. The window covers the opening defined by the window frame. The housing and the window frame are configured such that a liquid can flow from the inlet port to the outlet port through either a first liquid path at least partially defined by the housing or a second liquid path cooperatively defined by the housing and the window frame. The second liquid path is disposed about at least a portion of the opening in the window frame. | 04-02-2009 |
20100079053 | Cathode Assembly With Integral Tabs - A cathode shield comprising a shield body and tabs for defining a focal spot length. The tabs can be integral with the shield body and spaced a distance apart from each other. The tabs can at least partially define the focal spot length of an electron source associated with a cathode shield. The cathode shield can further comprise means for positioning the cathode shield relative to a component in a cathode assembly. | 04-01-2010 |
20110038459 | X-RAY TUBE BEARING SHAFT AND HUB - In one example, an assembly comprises a hub and a shaft. The hub defines an axis of rotation and includes first and second flanges that at least partly define a substantially cylindrical hub opening. The shaft is connected to the hub and includes a first end and a shaft cavity. The first end is received within the hub opening. The shaft cavity is formed in the first end and includes a bottom having a substantially curved transition area. | 02-17-2011 |
20110038461 | EVACUATED ENCLOSURE WINDOW COOLING - In one example, an x-ray tube includes an evacuated enclosure and an anode disposed with the evacuated enclosure. The anode is configured to receive electrons emitted by an electron emitter. The x-ray tube also includes an evacuated enclosure window disposed within a port of the evacuated enclosure. The evacuated enclosure window includes first and second axes, the first axis being relatively shorter than the second axis. The x-ray tube also includes means for directing coolant flow. The means for directing coolant flow causes coolant to flow across an exterior surface of the evacuated enclosure window in a direction substantially parallel to the first axis. | 02-17-2011 |
20110038462 | LIQUID-COOLED APERTURE BODY IN AN X-RAY TUBE - A liquid-cooled aperture body in an x-ray tube. In one example embodiment, an x-ray tube is configured to be at least partially submerged in a liquid coolant. The x-ray tube includes a cathode at least partially positioned within a cathode housing, an anode at least partially positioned within a can, and an aperture body coupling the cathode housing to the can. The can is formed from a first material and the aperture body is formed from a second material. The aperture body defines an aperture through which electrons may pass between the cathode and the anode. The aperture body further defines at least two exterior surfaces that are each configured to be exposed to the liquid coolant in which the x-ray tube is at least partially submerged. | 02-17-2011 |
20130156161 | X-RAY TUBE APERTURE HAVING EXPANSION JOINTS - An x-ray tube electron shield is disclosed for interposition between an electron emitter and an anode configured to receive the emitted electrons. The electron shield includes expansion joints to accommodate thermal expansion. | 06-20-2013 |
20130195253 | X-RAY TUBE APERTURE BODY WITH SHIELDED VACUUM WALL - X-ray tube aperture body with shielded vacuum wall. In one example embodiment, an aperture body for use in an x-ray tube having an anode and a cathode includes an electron shield and a vacuum wall. The electron shield is configured to intercept backscattered electrons from the anode. The vacuum wall is separated by a gap from the electron shield and is shielded from the backscattered electrons by the electron shield. The aperture body also includes an electron shield aperture defined in the electron shield and a vacuum wall aperture defined in the vacuum wall through which electrons may pass between the cathode and the anode. | 08-01-2013 |
20150063532 | MULTILEVEL COMPUTED TOMOGRAPHY FOR RADIALLY-SHIFTED FOCAL SPOTS - In one example embodiment, a method of volumetric image reconstruction of an examination region includes directing x-rays from an anode of an x-ray device towards the examination region from multiple positions relative to the examination region, including multiple focal spot positions radially shifted relative to the anode. X-rays that have passed through the examination region are detected and first multiple x-ray attenuation values are determined for each of the multiple positions. The first multiple x-ray values are based at least in part on the detected x-rays. Second multiple x-ray attenuation values associated with multiple levels are determined. The second multiple attenuation values are based at least in part on the first multiple attenuation values and the multiple positions. The method further includes generating a volumetric image reconstruction of the examination region based at least in part on the second multiple x-ray attenuation values. | 03-05-2015 |
John T. Andrews, Eagle Mountain, UT US
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20090173993 | Structure and Method of Forming a Topside Contact to a Backside Terminal of a Semiconductor Device - A vertically conducting semiconductor device includes a semiconductor substrate having a topside surface and a backside surface. The semiconductor substrate serves as a terminal of the vertically conducting device for biasing the vertically conducting device during operation. An epitaxial layer extends over the topside surface of the semiconductor substrate but terminates prior to reaching an edge of the semiconductor substrate so as to form a recessed region along a periphery of the semiconductor substrate. An interconnect layer extends into the recessed region but terminates prior to reaching an edge of the semiconductor substrate. The interconnect layer electrically contacts the topside surface of the semiconductor substrate in the recessed region to thereby provide a topside contact to the semiconductor substrate. | 07-09-2009 |
20110097894 | Method of Forming a Topside Contact to a Backside Terminal of a Semiconductor Device - A process for forming a vertically conducting semiconductor device includes providing a semiconductor substrate having a topside surface and a backside surface. The semiconductor substrate serves as a terminal of the vertically conducting device for biasing the vertically conducting device during operation. The process also includes forming an epitaxial layer extending over the topside surface of the semiconductor substrate but terminating prior to reaching an edge of the semiconductor substrate so as to form a recessed region along a periphery of the semiconductor substrate. The method also includes forming an interconnect layer extending into the recessed region but terminating prior to reaching an edge of the semiconductor substrate. The interconnect layer electrically contacts the topside surface of the semiconductor substrate in the recessed region to thereby provide a topside contact to the semiconductor substrate. | 04-28-2011 |
20130027825 | METHODS AND APPARATUS RELATED TO AN INDUCTIVE SWITCHING TEST - In one general aspect, an apparatus can include an energy storage device configured to store energy during an unclamped inductive switching test of a target device, and a switch device configured to shunt at least a portion of energy away from the target device in response to the target device changing from a breakdown state to a failure state. | 01-31-2013 |
John Tracey Andrews, Eagle Mountain, UT US
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20100029083 | Method for Forming Laterally Extending Dielectric Layer in a Trench-Gate FET - A field effect transistor (FET) is formed as follows. A trench is formed in a silicon region. An oxidation barrier layer is formed over a surface of the silicon region adjacent the trench and along the trench sidewalls and bottom. A protective layer is formed over the oxidation barrier layer inside and outside the trench. The protective layer is partially removed such that a portion of the oxidation barrier layer extending at least along the trench bottom becomes exposed and portions of the oxidation barrier layer extending over the surface of the silicon region adjacent the trench remain covered by remaining portions of the protective layer. | 02-04-2010 |
20110031551 | Structure and Method For Forming Laterally Extending Dielectric Layer in a Trench-Gate FET - A FET is formed as follows. A trench is formed in a silicon region. A shield electrode is formed in a bottom portion of the trench. The shield electrode is insulated from adjacent silicon region by a shield dielectric. A silicon nitride layer is formed over a surface of the silicon region adjacent the trench, along the trench sidewalls, and over the shield electrode and shield dielectric. A layer of LTO is formed over the silicon nitride layer such that those portions of the LTO layer extending over the surface of the silicon region adjacent the trench are thicker than the portion of the LTO layer extending over the shield electrode. The LTO layer is uniformly etched back such that a portion of the silicon nitride layer becomes exposed while portions of the silicon nitride layer remain covered. | 02-10-2011 |
Kathleen Andrews, Draper, UT US
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20090098230 | NUTRACEUTICAL MORINGA COMPOSITION - The present invention incorporates portions from the | 04-16-2009 |
Thomas Andrews, Provo, UT US
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20130133558 | Gun Safe - A gun safe is configured to be mounted underneath a portion of an item of furniture and to be deployable from a storage position underneath the portion of the item of furniture into a readily-accessible position adjacent the item of furniture. The gun safe includes a lockable container sized to receive a weapon therein and an articulating mount configured to secure the lockable container underneath the portion of the item of furniture in the storage position. The articulating mount includes a fixed element configured to be fixed underneath the portion of the item of furniture and an articulating element attached between the fixed element and the lockable container, the articulating element being configured to facilitate movement of the lockable container from the storage position outward and upward to a deployed position adjacent the item of furniture. | 05-30-2013 |