Patents by Inventor Robert H. Blackwell
Robert H. Blackwell 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: 20240071917Abstract: Advanced lithography techniques including sub-10 nm pitch patterning and structures resulting therefrom are described. Self-assembled devices and their methods of fabrication are described.Type: ApplicationFiled: October 27, 2023Publication date: February 29, 2024Inventors: Richard E. SCHENKER, Robert L. BRISTOL, Kevin L. LIN, Florian GSTREIN, James M. BLACKWELL, Marie KRYSAK, Manish CHANDHOK, Paul A. NYHUS, Charles H. WALLACE, Curtis W. WARD, Swaminathan SIVAKUMAR, Elliot N. TAN
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Patent number: 10443675Abstract: An aircraft includes an airframe having an extending tail, and a counter rotating, coaxial main rotor assembly located at the airframe including an upper rotor assembly and a lower rotor assembly. A translational thrust system is positioned at the extending tail and providing translational thrust to the airframe. An active vibration control (AVC) system is located and the airframe and includes a plurality of AVC actuators configured to generate forces to dampen aircraft component vibration, and an AVC controller configured to transmit control signals to the plurality of AVC actuators thereby triggering force generation by the plurality of AVC actuators. A method of damping vibration of an aircraft includes receiving a vibration signal at an AVC controller, communicating a control signal from the AVC controller to a plurality of AVC actuators, generating a force at the AVC actuators, and damping vibration of the aircraft via the generated force.Type: GrantFiled: August 6, 2015Date of Patent: October 15, 2019Assignee: SIKORSKY AIRCRAFT CORPORATIONInventors: William A. Welsh, Steven D. Weiner, Robert H. Blackwell, Jr.
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Publication number: 20170217575Abstract: An aircraft includes an airframe having an extending tail, and a counter rotating, coaxial main rotor assembly located at the airframe including an upper rotor assembly and a lower rotor assembly. A translational thrust system is positioned at the extending tail and providing translational thrust to the airframe. An active vibration control (AVC) system is located and the airframe and includes a plurality of AVC actuators configured to generate forces to dampen aircraft component vibration, and an AVC controller configured to transmit control signals to the plurality of AVC actuators thereby triggering force generation by the plurality of AVC actuators. A method of damping vibration of an aircraft includes receiving a vibration signal at an AVC controller, communicating a control signal from the AVC controller to a plurality of AVC actuators, generating a force at the AVC actuators, and damping vibration of the aircraft via the generated force.Type: ApplicationFiled: August 6, 2015Publication date: August 3, 2017Inventors: William A. Welsh, Steven D. Weiner, Robert H. Blackwell, JR.
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Patent number: 7252479Abstract: A main rotor blade exhibiting a unique planform shape in which the blade chord increases from the root end of the blade inboard region to the outer main region of the blade, where the blade chord achieves a maximum chord at a spanwise location within the main region, then decreases toward a distal tip end. The leading edge preferably is generally straight while the trailing edge is contoured to define the chord. Another characteristic feature of the rotor blade design is the location of the blade-feathering axis in which the feathering axis is located at a mid chord position over some inboard length of the rotor blade then transitions to a quarter chord location. Another characteristic feature is an airfoil distribution along the blade span that transitions from a blunt trailing edge to a sharp trailing edge airfoil suited for mid-range Mach number operation. The tip region preferably utilizes a transonic flow airfoil.Type: GrantFiled: May 31, 2005Date of Patent: August 7, 2007Assignee: Sikorsky Aircraft CorporationInventors: Ashish Bagai, Robert C. Moffitt, Robert H. Blackwell, Jr., Timothy A. Krauss
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Patent number: 6958188Abstract: Fibers having a reduced amount of glare are disclosed. Products made therefrom the fibers are also disclosed. Methods of making the fibers and products are further disclosed.Type: GrantFiled: August 3, 2004Date of Patent: October 25, 2005Assignee: Honeywell International, Inc.Inventors: Robert H. Blackwell, Donald E. Wright, Albert R. Moorhead
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Patent number: 6841247Abstract: Fibers having a reduced amount of glare are disclosed. Products made therefrom the fibers are also disclosed. Methods of making the fibers and products are further disclosed.Type: GrantFiled: June 23, 2003Date of Patent: January 11, 2005Assignee: Honeywell International Inc.Inventors: Robert H. Blackwell, Donald E. Wright, Albert R. Moorhead
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Publication number: 20040053046Abstract: Fibers having a reduced amount of glare are disclosed. Products made therefrom the fibers are also disclosed. Methods of making the fibers and products are further disclosed.Type: ApplicationFiled: June 23, 2003Publication date: March 18, 2004Inventors: Robert H. Blackwell, Donald E. Wright, Albert R. Moorhead
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Patent number: 5804115Abstract: A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn is a one-step process. It joins extruding, texturing, and interlacing to yield a yarn that may be tufted directly into carpet without further texturing or twisting. In another aspect, one or more additional strands may be inserted in the process. An apparatus for making the ready-to-tuft, mock space-dyed, bulked continuous filament yarn is described.Type: GrantFiled: December 13, 1996Date of Patent: September 8, 1998Assignee: BASF CorporationInventors: Wendel L. Burton, Robert H. Blackwell
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Patent number: 5641570Abstract: A process for producing multicomponent fibers provides a dispersion of a particulate additive or chemical compound in a nonaqueous liquid carrier, forms a blend of a first thermoplastic polymer and the dispersion by injecting the dispersion into an extruder which is part of a fiber extrusion apparatus and which extruder is extruding the tint thermoplastic polymer thereby forming a blend of the additive in the first thermoplastic polymer, provides a second thermoplastic polymer to the fiber extrusion apparatus; in the fiber extrusion apparatus, arranges the blend and the second thermoplastic polymer in a preselected, mutually separated relative arrangement; directs the arrangement of blend and the second thermoplastic polymer to a spinneret which is a part of the fiber extrusion apparatus while maintaining the preselected, mutually separated relative arrangement; exudes the directed arrangement of the blend and the second molten polymer through the spinneret to form multicomponent fibers; and solidifies the muType: GrantFiled: November 20, 1995Date of Patent: June 24, 1997Assignee: BASF CorporationInventor: Robert H. Blackwell
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Patent number: 5632944Abstract: A process for producing multicomponent fibers provides a dispersion of a particulate additive or chemical compound in a nonaqueous liquid carrier; forms a blend of a first thermoplastic polymer and the dispersion by injecting the dispersion into an extruder which is part of a fiber extrusion apparatus and which extruder is extruding the first thermoplastic polymer thereby forming a blend of the additive in the first thermoplastic polymer; provides a second thermoplastic polymer to the fiber extrusion apparatus; in the fiber extrusion apparatus, arranges the blend and the second thermoplastic polymer in a preselected, mutually separated relative arrangement; directs the arrangement of blend and the second thermoplastic polymer to a spinneret which is a part of the fiber extrusion apparatus while maintaining the preselected, mutually separated relative arrangement; extrudes the directed arrangement of the blend and the second molten polymer through the spinneret to form multicomponent fibers; and solidifies theType: GrantFiled: November 20, 1995Date of Patent: May 27, 1997Assignee: BASF CorporationInventor: Robert H. Blackwell
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Patent number: 5614142Abstract: Fibers are made from thermoplastic polymers by supplying solid particles of the thermoplastic to a melting grid; heating the melting grid to a temperature sufficient to melt the thermoplastic; melting the thermoplastic particles on the heated melting grid such that the melted thermoplastic flows through the grid and is collected in a collecting chamber located beneath the melting grid; injecting into the collecting chamber below the melting grid an additive present in a non-aqueous carrier which carrier comprises organic rosin materials and a surfactant; without actuated mechanical stirring, forming a substantially homogeneous mixture from the injected additive; and extruding fibers from the substantially homogeneous mixture.Type: GrantFiled: November 20, 1995Date of Patent: March 25, 1997Assignee: BASF CorporationInventors: Robert L. Lilly, Robert H. Blackwell, Charles H. Rogers, Zachary G. Shoaf
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Patent number: 4130377Abstract: A torsionally compliant helicopter blade having its aerodynamic center axis positioned selectively forward of its center of gravity and elastic axes throughout a selected portion of the blade span so that, during operation, the blade will experience airloading which will induce two per rev torsional deflection of the blade to thereby improve rotor performance by reducing the total power required to drive the rotor.Type: GrantFiled: July 13, 1977Date of Patent: December 19, 1978Assignee: United Technologies CorporationInventor: Robert H. Blackwell, Jr.