Patents by Inventor David Henderson

David Henderson 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).

  • Publication number: 20170107323
    Abstract: The present invention provides a method of preparing an amine-functionalized (e.g. amine-terminated) polyaryletherketone polymer, or imide- or sulphone-copolymer thereof and amine-protected analogues thereof, said method comprising the step of polymerizing a monomer system in a reaction medium comprising a capping agent comprising —NR2, —NRH or a protected amine group.
    Type: Application
    Filed: May 21, 2015
    Publication date: April 20, 2017
    Inventors: Ian David Henderson TOWLE, Kaylie Jane SMITH
  • Publication number: 20170081938
    Abstract: In accordance with embodiments of the present disclosure, a setting tool for setting a packer in a wellbore includes a housing defining a hydraulic chamber, a piston disposed in the chamber, a pump coupled to the chamber via a flowline, and a setting sleeve directly or indirectly coupled to the piston. The pump may be used to pump pressurized fluid into the hydraulic chamber for pushing the piston in a direction, and the setting sleeve may be used to apply a compressive force to a packer element of the packer in response to the piston being pushed in that direction. In some embodiments, the setting tool may include a sensor used to collect a measurement relating to a force on the workstring, in addition to a controller designed to receive a signal from the sensor and to provide a control signal to the pump based on the sensor signal.
    Type: Application
    Filed: December 16, 2014
    Publication date: March 23, 2017
    Inventors: William Mark Richards, Colby Munro Ross, Thomas Owen Roane, William David Henderson
  • Publication number: 20170081467
    Abstract: The present invention provides a method of preparing a polyaryletherketone copolymer (e.g. a random or block copolymer), said method comprising: polymerising (i) a monomer system suitable for forming aryletherketone units and (ii) a comonomer in a reaction medium comprising: (a) a Lewis acid and (b) a controlling agent comprising an aromatic carboxylic acid, an aromatic sulphonic acid, or a derivative thereof; and polymers produced therefrom.
    Type: Application
    Filed: May 21, 2015
    Publication date: March 23, 2017
    Inventors: Ian David Henderson TOWLE, Kaylie Jane SMITH, Pauline Julia SIDDONS
  • Publication number: 20170054388
    Abstract: A stick-slip stage device includes a carriage assembly configured to support a payload, the carriage assembly comprising at least three piezoelectric stick-slip actuators each having one or more contact points. At least two rails are positioned on opposing sides of the carriage assembly and configured to interact with one or more of the contact points to form a guideway for movement of the carriage assembly. A fixed structure connects the at least two rails and is configured to generate a friction force between the at least two rails and one or more of the contact points of the at least three piezoelectric stick-slip actuators. A method of making a stick-slip stage device is also disclosed.
    Type: Application
    Filed: August 17, 2016
    Publication date: February 23, 2017
    Inventors: David A. Henderson, Qin Xu, Daniele Piazza
  • Patent number: 9568181
    Abstract: A flushmount luminaire is configured to be flush mounted on a mounting surface. The flushmount luminaire includes a light source having a plurality of light emitting diodes (LEDs); a combination heat spreader and heat sink disposed in thermal communication with the light source such that the combination heat spreader and heat sink facilitates transfer of heat away from the LEDs; and, a power conditioner structurally configured and disposed to receive AC voltage from an electrical supply and to provide DC voltage to the plurality of LEDs. The combination heat spreader and heat sink has an outer dimension that is larger than: an opening defined by a nominally sized can light fixture; and, an opening defined by a nominally sized electrical junction box. A back surface of the combination heat spreader and heat sink is configured to permit the flushmount luminaire to be flush mounted on the mounting surface.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: February 14, 2017
    Assignee: Lighting Science Group Corporation
    Inventors: Mark Penley Boomgaarden, Michael Balestracci, Rick LeClair, Wei Sun, David Henderson, Shane Sullivan
  • Publication number: 20160313384
    Abstract: A testing system includes a vacuum pump, testing equipment and a vibration device. A vacuum tray is configured to provide relative movement between a DUT and the vacuum pump, testing equipment and the vibration device. The vacuum tray includes a vacuum chamber configured to define a sealed vacuum environment around the DUT, and a DUT support carried by the vacuum chamber and configured to support the DUT within the chamber during testing thereof. The DUT support includes a pedestal configured to hold the DUT within the chamber during vibration testing, and an extension that extends outside the vacuum chamber and is configured to connect to the vibration device. An electrical test interface unit is carried by the vacuum chamber and configured to connect between the DUT and the test equipment, and a vacuum interface is carried by the vacuum chamber and configured to connect to the vacuum pump.
    Type: Application
    Filed: April 21, 2015
    Publication date: October 27, 2016
    Inventor: David Henderson
  • Publication number: 20160243622
    Abstract: A method for producing a metal powder includes maintaining molten reducing metal in a sealed reaction vessel that is substantially free of oxygen and water, establishing a vortex in the molten reducing metal, introducing a metal halide into the vortex so that the molten reducing metal is in a stoichiometric excess to the metal halide, thereby producing metal particles and salt, removing unreacted reducing metal, removing the salt, and recovering the metal powder. The molten reducing metal can be a Group I metal, a Group II metal, or aluminum.
    Type: Application
    Filed: February 23, 2016
    Publication date: August 25, 2016
    Inventors: David Henderson, Andrew Matheson, Richard Van Lieshout, Donald Finnerty, John W. Koenitzer
  • Patent number: 9416616
    Abstract: A well tool includes: a well packer; a hydraulic sub-assembly coupled to the well packer; an anti-preset assembly coupled to the hydraulic sub-assembly; a slip assembly coupled to the anti-preset assembly; and a fold-back assembly coupled between the well packer and the hydraulic sub-assembly. The well packer includes an expandable member that rides on a mandrel extending at least a portion of the well tool. The fold-back assembly includes a bias member carried on the mandrel and adapted to engage a profile formed on the mandrel based on a setting stroke that adjusts the expandable member into an expanded position in substantially sealing contact with a tubular.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: August 16, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Christopher Robert Delzell, William Mark Richards, William David Henderson, Bryon Mullen
  • Publication number: 20160230497
    Abstract: A well packer includes an expandable member carried on a mandrel, the mandrel including a groove formed on at least a portion of an outer radial surface of the mandrel; a back-up assembly carried on the mandrel adjacent the expandable member; and a fold back assembly carried on the mandrel adjacent the back-up assembly, the fold back assembly including a snap ring carried on the mandrel and adapted to move into the groove and adjust the expandable member into an expanded position in substantially sealing contact with a tubular.
    Type: Application
    Filed: April 6, 2016
    Publication date: August 11, 2016
    Inventors: Christopher Robert Delzell, William Mark Richards, William David Henderson, Bryon Mullen
  • Publication number: 20160233793
    Abstract: A two-axis angular pointing device includes a pivot bearing configured to support a payload. A first actuator is positioned to contact the payload at a first drive point. A second actuator is positioned to contact the payload at a second drive point. The first actuator is configured to generate a first movement of the payload in a direction substantially orthogonal to a plane defined by a center of the pivot bearing, the first drive point, and the second drive point to cause the payload to rotate around a first rotation axis. The second actuator is configured to generate a second movement of the payload at the second drive point in the direction substantially orthogonal to the plane to cause the payload to rotate around a second rotation axis. A method of making a two-axis angular pointing device is also disclosed.
    Type: Application
    Filed: February 5, 2016
    Publication date: August 11, 2016
    Inventors: David A. Henderson, Qin Xu
  • Patent number: 9377619
    Abstract: A compact wide-angle optical beam steering device includes a first rotor with a first mirror surface and a second rotor with a second mirror surface. The rotors are arranged to rotate about an axis in response to frictionally coupled vibration motors. Drive circuits are coupled to the vibration motors and a control device is coupled to the drive circuits. The control device is configured to execute programmed instructions comprising generating and providing one or more driving signals to the vibration motors to drive the rotors to an angular position about the axes. A light source is positioned to emit a beam directed to the first mirror surface. The beam is reflected from the first mirror and contacts the second mirror. The second mirror is positioned to reflect the beam to exit the steering device at a pointing direction determined by the angular position of the mirrors.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: June 28, 2016
    Assignee: New Scale Technologies, Inc.
    Inventors: David A. Henderson, Matthew R. Wrona
  • Patent number: 9362851
    Abstract: A rotary motor and a method of making the same include a vibrating motor body which has two orthogonal first bending modes and is substantially enclosed within a housing. A shaft is frictionally coupled to the vibrating motor body and is arranged to rotate in at least one direction about a rotation axis in response to the vibrating motor body. The shaft is frictionally coupled the vibrating motor body by a force substantially perpendicular to the rotation axis. One or more bearings support the shaft, are connected to the housing, and define the axis of rotation of the shaft.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: June 7, 2016
    Assignee: New Scale Technologies, Inc.
    Inventors: Qin Xu, Matthew Wrona, David A. Henderson, Daniele Piazza
  • Patent number: 9297232
    Abstract: An apparatus for isolating a first zone from a second zone in a subterranean wellbore. The apparatus includes an outer tubular and an inner tubular disposed within the outer tubular forming an annular flow path therebetween that is in fluid communication with the first zone. The inner tubular defines a central flow path that is in fluid communication with the second zone. A sleeve having at least one seal is positioned in the annular flow path and is axially movable relative to the inner and outer tubulars between a closed position wherein the seal engages the inner tubular and an open position wherein the seal engages the outer tubular. A mandrel is slidably disposed within the inner tubular and is coupled to the sleeve. The mandrel is operable to shift the sleeve between the open position and the closed position responsive to changes in pressure within the central flow path.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 29, 2016
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Keith Wayne Scott, William David Henderson, Douglas Allen Schafer
  • Publication number: 20160010421
    Abstract: Certain aspects are directed to a testable isolation packer that sets and provides the ability to test upper and lower packer elements. In one aspect, the testable isolation packer includes at least two packer elements, a packer element setting system, a bypass system, and a testing subassembly. The testing subassembly generally includes a moveable element with an outer port and a sealing element, an inner mandrel with an inner port, and a shear mechanism to cause travel of the moveable element close the bypass system and to open the testing subassembly.
    Type: Application
    Filed: January 23, 2014
    Publication date: January 14, 2016
    Inventors: William David Henderson, Timothy Edward Harms, William Mark Richards
  • Publication number: 20150337082
    Abstract: Particles of an amine-functionalised polyaryletherketone polymer or copolymer thereof. The amine-functionalised polyaryletherketone polymer or copolymer thereof is selected from the group consisting of: polyaryletherketone polymer with terminal amine or protected amine functional group(s); polyaryletherketone-imide copoplymer with terminal amine or protected amine functional group(s); and polyaryletherketone-sulphone copolymer with terminal amine or protected amine functional group(s).
    Type: Application
    Filed: May 21, 2015
    Publication date: November 26, 2015
    Applicants: Ketonex Limited, Cytec Industries Inc.
    Inventors: James Francis Pratte, Robin K. Maskell, Ian David Henderson Towle, Kaylie Jane Smith
  • Publication number: 20150300622
    Abstract: A flushmount luminaire is configured to be flush mounted on a mounting surface. The flushmount luminaire includes a light source having a plurality of light emitting diodes (LEDs); a combination heat spreader and heat sink disposed in thermal communication with the light source such that the combination heat spreader and heat sink facilitates transfer of heat away from the LEDs; and, a power conditioner structurally configured and disposed to receive AC voltage from an electrical supply and to provide DC voltage to the plurality of LEDs. The combination heat spreader and heat sink has an outer dimension that is larger than: an opening defined by a nominally sized can light fixture; and, an opening defined by a nominally sized electrical junction box. A back surface of the combination heat spreader and heat sink is configured to permit the flushmount luminaire to be flush mounted on the mounting surface.
    Type: Application
    Filed: May 1, 2015
    Publication date: October 22, 2015
    Inventors: Mark Penley Boomgaarden, Michael Balestracci, Rick LeClair, Wei Sun, David Henderson, Shane Sullivan
  • Publication number: 20150219892
    Abstract: A compact wide-angle optical beam steering device includes a first rotor with a first mirror surface and a second rotor with a second mirror surface. The rotors are arranged to rotate about an axis in response to frictionally coupled vibration motors. Drive circuits are coupled to the vibration motors and a control device is coupled to the drive circuits. The control device is configured to execute programmed instructions comprising generating and providing one or more driving signals to the vibration motors to drive the rotors to an angular position about the axes. A light source is positioned to emit a beam directed to the first mirror surface. The beam is reflected from the first mirror and contacts the second mirror. The second mirror is positioned to reflect the beam to exit the steering device at a pointing direction determined by the angular position of the mirrors.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 6, 2015
    Applicant: New Scale Technologies, Inc.
    Inventors: David A. Henderson, Matthew R. Wrona
  • Publication number: 20150198005
    Abstract: A well packer includes an expandable member carried on a mandrel, the mandrel including a groove formed on at least a portion of an outer radial surface of the mandrel; a back-up assembly carried on the mandrel adjacent the expandable member; and a fold back assembly carried on the mandrel adjacent the back-up assembly, the fold back assembly including a snap ring carried on the mandrel and adapted to move into the groove and adjust the expandable member into an expanded position in substantially sealing contact with a tubular.
    Type: Application
    Filed: November 16, 2012
    Publication date: July 16, 2015
    Inventors: Christopher Robert Delzell, William Mark Richards, William David Henderson, Bryon Mullen
  • Publication number: 20150092421
    Abstract: A luminaire includes a light source having a plurality of light emitting diodes (LEDs), a heat spreader, and a substantially ring-shaped trim plate. The heat spreader is disposed between and in thermal communication with the light source and the trim plate such that the heat spreader facilitates transfer of heat from the LEDs to the trim plate. The trim plate is structurally configured and disposed for dissipating heat generated by the light source. The trim plate has an outer dimension that is larger than: an opening defined by a nominally sized can light fixture; and, an opening defined by a nominally sized electrical junction box.
    Type: Application
    Filed: September 22, 2014
    Publication date: April 2, 2015
    Inventors: Mark Penley Boomgaarden, Michael Balestracci, Rick LeClair, Wei Sun, David Henderson, Shane Sullivan
  • Patent number: D726349
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: April 7, 2015
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David Henderson, Mark Penley Boomgaarden, Addy S. Widjaja, Emilio Flores, Shane Sullivan, Wei Sun