Patents by Inventor Gary A. Davis
Gary A. Davis 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: 10087763Abstract: A rotor comprises a disk having a rim. The rim has an axial face facing one of a forward or rearward direction. The rim defines a circumferential groove. A damper engages with the rim at both the axial face and the circumferential groove. The disk includes a rotor hub having a hub inner surface facing a longitudinal axis about which the rotor hub rotates. The rim is spaced radially outwardly relative to the hub inner surface. The axial face extends radially inwardly from the rim to the hub inner surface. The circumferential groove is formed within the hub inner surface. The damper comprises a split ring damper with a first leg mounted within the circumferential groove and a second leg that extends from the first leg, surrounds a radial lip of the hub inner surface, and extends radially outwardly to contact the axial face. An integrally bladed rotor is also disclosed.Type: GrantFiled: August 31, 2015Date of Patent: October 2, 2018Assignee: United Technologies CorporationInventors: Yehia M. El-Aini, Gary A. Davis
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Publication number: 20150369049Abstract: A rotor comprises a disk having a rim. The rim has an axial face facing one of a forward or rearward direction. The rim defines a circumferential groove. A damper engages with the rim at both the axial face and the circumferential groove. The disk includes a rotor hub having a hub inner surface facing a longitudinal axis about which the rotor hub rotates. The rim is spaced radially outwardly relative to the hub inner surface. The axial face extends radially inwardly from the rim to the hub inner surface. The circumferential groove is formed within the hub inner surface. The damper comprises a split ring damper with a first leg mounted within the circumferential groove and a second leg that extends from the first leg, surrounds a radial lip of the hub inner surface, and extends radially outwardly to contact the axial face. An integrally bladed rotor is also disclosed.Type: ApplicationFiled: August 31, 2015Publication date: December 24, 2015Inventors: Yehia M. El-Aini, Gary A. Davis
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Patent number: 9151170Abstract: A Rotor includes a disk having a rim with an axial face, the rim defines a circumferential groove. A damper engaged with the rim at both the axial face and the circumferential groove.Type: GrantFiled: June 28, 2011Date of Patent: October 6, 2015Assignee: United Technologies CorporationInventors: Yehia M. El-Aini, Gary A. Davis
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Publication number: 20130004313Abstract: A Rotor includes a disk having a rim with an axial face, the rim defines a circumferential groove. A damper engaged with the rim at both the axial face and the circumferential groove.Type: ApplicationFiled: June 28, 2011Publication date: January 3, 2013Inventors: Yehia M. El-Aini, Gary A. Davis
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Patent number: 7806410Abstract: A stationary labyrinth seal system includes a seal housing having an annular cavity, a plurality of damping devices, and a retaining ring. The damping devices are positioned within the annular cavity and are maintained within the annular cavity by the retaining ring.Type: GrantFiled: February 20, 2007Date of Patent: October 5, 2010Assignee: United Technologies CorporationInventors: Yehia M. El-Aini, William S. Mitchell, Lawrence P. Roberts, Stuart K. Montgomery, Gary A. Davis
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Publication number: 20080197575Abstract: A stationary labyrinth seal system includes a seal housing having an annular cavity, a plurality of damping devices, and a retaining ring. The damping devices are positioned within the annular cavity and are maintained within the annular cavity by the retaining ring.Type: ApplicationFiled: February 20, 2007Publication date: August 21, 2008Applicant: United Technologies CorporationInventors: Yehia M. El-Aini, William S. Mitchell, Lawrence P. Roberts, Stuart K. Montgomery, Gary A. Davis
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Patent number: 6685435Abstract: A turbine blade assembly for a turbine assembly includes a turbine blade having a turbine blade damper cavity formed therein and stranded wire cable positioned within the turbine blade damper cavity. The stranded wire cable is maintained in the damper cavity during operation of the turbine blade assembly. It reduces vibration of the turbine blade assembly during operation by dissipating energy by friction between the stranded wire cable and the internal surface of the blade that defines the damper cavity. It also dissipates energy by friction between adjacent wires within the stranded wire cable.Type: GrantFiled: April 26, 2002Date of Patent: February 3, 2004Assignee: The Boeing CompanyInventors: Gary A. Davis, Gary E. Tuttle, Robert F. Beatty
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Patent number: 6676380Abstract: A turbine blade assembly for a turbine assembly includes a turbine blade having a turbine blade damper cavity formed therein and a plurality of pins positioned within the turbine blade damper cavity. The pins are maintained in the damper cavity during operation of the turbine blade assembly. They reduce vibration of the turbine blade assembly during operation by dissipating energy by friction between adjacent pins and between the pins and the internal surface of the blade that defines the damper cavity.Type: GrantFiled: April 11, 2002Date of Patent: January 13, 2004Assignee: The Boeing CompanyInventors: Gary A. Davis, Gary E. Tuttle
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Publication number: 20030202883Abstract: A turbine blade assembly for a turbine assembly includes a turbine blade having a turbine blade damper cavity formed therein and stranded wire cable positioned within the turbine blade damper cavity. The stranded wire cable is maintained in the damper cavity during operation of the turbine blade assembly. It reduces vibration of the turbine blade assembly during operation by dissipating energy by friction between the stranded wire cable and the internal surface of the blade that defines the damper cavity. It also dissipates energy by friction between adjacent wires within the stranded wire cable.Type: ApplicationFiled: April 26, 2002Publication date: October 30, 2003Inventors: Gary A. Davis, Gary E. Tuttle, Robert F. Beatty
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Publication number: 20030194324Abstract: A turbine blade assembly for a turbine assembly includes a turbine blade having a turbine blade damper cavity formed therein and a plurality of pins positioned within the turbine blade damper cavity. The pins are maintained in the damper cavity during operation of the turbine blade assembly. They reduce vibration of the turbine blade assembly during operation by dissipating energy by friction between adjacent pins and between the pins and the internal surface of the blade that defines the damper cavity.Type: ApplicationFiled: April 11, 2002Publication date: October 16, 2003Inventors: Gary A. Davis, Gary E. Tuttle
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Patent number: 5873989Abstract: A magnetron sputtering source for depositing a material onto a substrate includes a target from which the material is sputtered, a magnet assembly disposed in proximity to the target for confining a plasma at the surface of the target and a drive assembly for scanning the magnet assembly relative to the target. The sputtering source may further include an anode for maintaining substantially constant plasma characteristics as the magnet assembly is scanned relative to the target. The anode may be implemented as variable voltage stationary electrodes positioned at or near the opposite ends of the scan path followed by the magnet assembly, spaced-apart anode wires positioned between the target and the substrate or a movable anode that is scanned with the magnet assembly. The magnet elements of the magnet assembly may have different spacings from the surface of the target to enhance depositional thickness uniformity.Type: GrantFiled: February 6, 1997Date of Patent: February 23, 1999Assignee: Intevac, Inc.Inventors: John L. Hughes, Gary A. Davis, Robert J. Kolenkow, Carl T. Petersen, Norman H. Pond, Robert E. Weiss
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Patent number: 5836327Abstract: An umbrella holder comprising a clamp mechanism; a right/left angular adjustment mechanism, a forward/rearward angular adjustment mechanism; a length adjustment mechanism; and an umbrella shaft and handle securing mechanism. The clamp mechanism includes an upper and lower jaw member, an upper and lower resilient clamp pad, and a clamp screw mechanism. Each upper and lower jaw member is provided with a clamp channel that is covered with the upper or lower resilient clamp pad, respectively. The clamp channels are oriented in opposed relationship and the clamp screw mechanism threadable engages the lower jaw member and rotatably engages the upper jaw member in a manner such that rotation of the clamp screw mechanism causes the upper and lower jaw to be forced together or apart depending on the direction of rotation of the clamp screw mechanism. The umbrella shaft and handle securing mechanism includes a shaft channel clamp and a handle strap assembly positioned below the shaft channel clamp.Type: GrantFiled: August 5, 1997Date of Patent: November 17, 1998Inventor: Gary A. Davis
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Patent number: 5576559Abstract: A smooth and monotonic potential energy gradient was established at a p-type (InGa)As--undopad InP heterojunction to efficiently transfer conduction electrons from the (InGa)As:p layer to the InP:.o slashed. layer. This potential energy gradient was established with a compositionally graded p-type semiconductor alloy layer and an n-type InP built-in field layer interposed at the heterojunction. The compositionally graded semiconductor alloy layer spatially distributes the conduction band discontinuity of the (InGa)As--InP heterojunction and the InP:n built-in field layer eliminates potential energy barriers from the conduction band over a wide range of externally-applied biases including no externally applied bias. The smooth and monotonic potential energy gradient thus established promotes efficient transfer of the conduction electrons due to drift from the (InGa)As:p layer to the large bandgap InP collector layer where they contribute to the output current of any number of electronic devices.Type: GrantFiled: November 1, 1994Date of Patent: November 19, 1996Assignee: Intevac, Inc.Inventor: Gary A. Davis
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Patent number: 5512375Abstract: High quality epitaxial layers can be grown on a multi-layer substrate which has a crystalline pseudomorphic layer with an exposed surface used for the epitaxial growth. The pseudomorphic layer of the substrate has a thickness at or below the pseudomorphic limit so it will be deformed as stress forces are developed during epitaxial growth of heteroepitaxial structures. A plastically deformable layer is bonded to the pseudomorphic layer, This plastically deformable layer is made of material that plastically flows at epitaxial growth temperatures.Type: GrantFiled: October 14, 1993Date of Patent: April 30, 1996Assignee: Intevac, Inc.Inventors: Roger T. Green, Gary A. Davis, Verle W. Aebi
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Patent number: 4009593Abstract: A refrigerated cabinet including a compartment for salad and another compartment for salad dressing, rendering both the salad and salad dressing easily accessible to the user, and dispensing means for the salad and salad dressing.Type: GrantFiled: March 10, 1976Date of Patent: March 1, 1977Assignee: Stevens-Lee CompanyInventor: Gary A. Davis