Patents by Inventor David Harrington

David Harrington 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).

  • Patent number: 10473163
    Abstract: A predictive system is provided and include a torque-limiter, a sensor disposed to sense a condition of the torque-limiter and a processing system. The processing system is coupled to the sensor and configured to process readings of the sensor, to calculate whether the condition of the torque-limiter is indicative of degradation or failure incidents based on the readings being processed and to determine whether an action should be taken based on a calculation result.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: November 12, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Erik Harrington, David G. Hill, Rachel Gallagher, Cory M. Crandall-Seibert, Victor Barger, Timothy Michael Mayer, Artemio PĂ©rez, Christian Miller, Yuniya S. Bishop
  • Publication number: 20190267499
    Abstract: Methods of fabricating solar cell emitter regions with differentiated P-type and N-type regions architectures, and resulting solar cells, are described. In an example, a back contact solar cell can include a substrate having a light-receiving surface and a back surface. A first polycrystalline silicon emitter region of a first conductivity type is disposed on a first thin dielectric layer disposed on the back surface of the substrate. A second polycrystalline silicon emitter region of a second, different, conductivity type is disposed on a second thin dielectric layer disposed on the back surface of the substrate. A third thin dielectric layer is disposed over an exposed outer portion of the first polycrystalline silicon emitter region and is disposed laterally directly between the first and second polycrystalline silicon emitter regions. A first conductive contact structure is disposed on the first polycrystalline silicon emitter region.
    Type: Application
    Filed: March 4, 2019
    Publication date: August 29, 2019
    Inventors: David D. Smith, Timothy Weidman, Scott Harrington, Venkatasubramani Balu
  • Publication number: 20190232894
    Abstract: This application discloses a computing system to receive a specification of prototype wiring corresponding to a signal in a logical design of a wire harness, locate a section of a vehicle to include a portion of the wire harness corresponding to the signal in the logical design, and insert the prototype wiring into a physical design of the wire harness corresponding to the located section of the vehicle. The specification of the prototype wiring can identify a particular vehicle configuration and insert the prototype wiring into a physical design of the wire harness for the particular vehicle configuration. The computing system can receive constraints configured to control synthesis of the logical design into the physical design of the wire harness, and generate portions of the physical design of the wire harness based on the constraints, while retaining the prototype wiring that was inserted into the physical design.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 1, 2019
    Inventors: Simon Holdsworth, Rory Harrington, David Barnes
  • Patent number: 10246279
    Abstract: The present invention is an impact vehicle restraint with spaced shear plates that hold a rotating hook and rotating ramp extension leg. The forward ends of the shear plates support an impact zone structure that forms a ramp plane that accommodates a wide variety of trailer ICC bars. The impact zone structure takes the form of a single central impact plate or dual side impact strips. The central impact plate travels with the hook and spans and rests on the shear plates when the hook is retracted. The dual side impact strips are made of weldable metal with a yield strength of at least 100,000 psi and a Brinell Hardness of at least 300. The central impact plate and hardened strips allow unobstructed rotation of the hook and ramp extension leg. The hook is free to pass through a ramp plane in both embodiments.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: April 2, 2019
    Assignee: Nordock, Inc.
    Inventors: Denis Gleason, David Harrington
  • Publication number: 20190078632
    Abstract: An assembly to secure a disc brake rotor to a wheel hub utilizing spring pins and a retaining ring is provided. A partial keyway is formed in the rotor, and a partial keyway is formed in the wheel hub. The rotor is fitted over an inwardly extending section of the hub, with the partial keyways in the rotor and in the wheel hub being aligned to form complete keyways. The spring pins are then press fit into the completed keyways. Finally, a retaining ring is installed into a slot formed in the inwardly extending section of the wheel hub to complete the assembly of the disc brake rotor assembly.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 14, 2019
    Inventors: Jared Wiley Richard Burris, Pavan Kumar Dunna, Nazar Ventaminovich Demenko, Darren Kirk Johnson, Jonathan David Harrington, Keith Darran Mann, William Joseph Edwards
  • Patent number: 10131509
    Abstract: The present invention is a pivoting pit seal assembly that forms a continuous seal with the rear bumper of a trailer parked in the bay of a loading dock, and which combines with the side and top seals of the loading dock to provide a 360 degree seal around a trailer. The pit seal assembly has a compression pad mounted to a rigid base. The pad has a resilient, compressible core material wrapped by a durable cover. One side of the base is pivotally held by brackets and corresponding releasable latches anchored to the front wall adjacent the pit floor or directly to the pit floor. During use, the pit seal is held in an upwardly angled position to compressingly engage the rear bumper of the trailer and form a continuous seal with the bumper. Each side end of the pit seal sealingly engages the vertical side seals located along the sides of the door opening to form a continuous seal between the pit seal and the side seals.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: November 20, 2018
    Assignee: Nordock, Inc.
    Inventors: Denis Gleason, David Harrington
  • Patent number: 10093494
    Abstract: The present invention is a vertically stored dock leveler with a telescoping lip that selectively extends and retracts through a range positions relative to the deck. The lip is held and guided by a deck frame carriage. When the deck is raised and lowered, the lip is extended and retracted by an electro-hydraulic control system. When the deck reaches a preselected incline position, the lip is fully extended. Sensors on the underside of the deck determine the incline position of the deck and when the lip is retracted. The leveler is then lowered until the lip engages and rests on the bed of the trailer. Similarly, when the deck is raised for storage and reaches the preselected incline position, the lip is fully retracted prior to returning to its stored position. The telescoping lip is selectively moveable to a range of partially extended position to facilitate end loading a trailer.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: October 9, 2018
    Assignee: Nordock, Inc.
    Inventor: David Harrington
  • Patent number: 10038365
    Abstract: A control circuit for a step-up converter includes a soft start module configured to control states of N transistor pairs of the step-up converter, where N is an integer greater than two. A driver module is in communication with the soft start module and configured to generate a first signal when N transistor pairs of the step-up converter are ready to switch. A first charging circuit is configured to charge (N-1) capacitors of the step-up converter to an input voltage of the step-up converter in response to the first signal and to generate a second signal when charging is complete. A second charging circuit is configured to sequentially charge the (N-1) capacitors of the step-up converter to (N-1) predetermined voltage values in response to the first signal and the second signal and before operation of the step-up converter begins.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: July 31, 2018
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Serhii Mikhailovich Zhak, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Publication number: 20180119772
    Abstract: A ram air turbine (RAT) actuator can include an actuator housing, an actuator rod configured to move relative to the actuator housing through several positions, and a first biasing member, a second biasing member, and a third biasing member positioned and configured to bias the actuator rod relative to the actuator housing. The first biasing member biases the actuator rod from a first position through a second position, the second biasing member biases the actuator rod from the first position through a third position, and the third biasing member biases the actuator rod from the first position through a fourth position. The three biasing members can be configured to bias a ram air turbine against an uplock hook with sufficient force to eliminate vibrational damage to the uplock hook while in the first position.
    Type: Application
    Filed: November 3, 2016
    Publication date: May 3, 2018
    Applicant: Hamilton Sundstrand Corporation
    Inventors: David Harrington, Paul M. Reinhard
  • Patent number: 9893622
    Abstract: A multi-level, step-up converter circuit includes an inductor including one terminal in communication with an input voltage supply. N transistor pairs are connected in series, where N is an integer greater than one. First and second transistors of a first pair of the N transistor pairs are connected together at a node. The node is in communication with another terminal of the inductor. Third and fourth transistors of a second pair of the N transistor pairs are connected to the first and second transistors, respectively. (N?1) capacitors have terminals connected between the N transistor pairs, respectively. An output capacitor has a terminal in communication with at least one transistor of the N transistor pair.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: February 13, 2018
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Serhii Mikhailovich Zhak, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Publication number: 20180029810
    Abstract: The present invention is a pivoting pit seal assembly that forms a continuous seal with the rear bumper of a trailer parked in the bay of a loading dock, and which combines with the side and top seals of the loading dock to provide a 360 degree seal around a trailer. The pit seal assembly has a compression pad mounted to a rigid base. The pad has a resilient, compressible core material wrapped by a durable cover. One side of the base is pivotally held by brackets and corresponding releasable latches anchored to the front wall adjacent the pit floor or directly to the pit floor. During use, the pit seal is held in an upwardly angled position to compressingly engage the rear bumper of the trailer and form a continuous seal with the bumper. Each side end of the pit seal sealingly engages the vertical side seals located along the sides of the door opening to form a continuous seal between the pit seal and the side seals.
    Type: Application
    Filed: September 29, 2017
    Publication date: February 1, 2018
    Inventors: Denis Gleason, David Harrington
  • Publication number: 20170275106
    Abstract: The present invention is an impact vehicle restraint with spaced shear plates that hold a rotating hook and rotating ramp extension leg. The forward ends of the shear plates support an impact zone structure that forms a ramp plane that accommodates a wide variety of trailer ICC bars. The impact zone structure takes the form of a single central impact plate or dual side impact strips. The central impact plate travels with the hook and spans and rests on the shear plates when the hook is retracted. The dual side impact strips are made of weldable metal with a yield strength of at least 100,000 psi and a Brinell Hardness of at least 300. The central impact plate and hardened strips allow unobstructed rotation of the hook and ramp extension leg. The hook is free to pass through a ramp plane in both embodiments.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 28, 2017
    Inventors: Denis Gleason, David Harrington
  • Publication number: 20170250607
    Abstract: A multi-level, step-up converter circuit includes an inductor including one terminal in communication with an input voltage supply. N transistor pairs are connected in series, where N is an integer greater than one. First and second transistors of a first pair of the N transistor pairs are connected together at a node. The node is in communication with another terminal of the inductor. Third and fourth transistors of a second pair of the N transistor pairs are connected to the first and second transistors, respectively. (N?1) capacitors have terminals connected between the N transistor pairs, respectively. An output capacitor has a terminal in communication with at least one transistor of the N transistor pair.
    Type: Application
    Filed: May 12, 2017
    Publication date: August 31, 2017
    Inventors: Serhii Mikhailovich ZHAK, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Publication number: 20170237336
    Abstract: A control circuit for a step-up converter includes a soft start module configured to control states of N transistor pairs of the step-up converter, where N is an integer greater than two. A driver module is in communication with the soft start module and configured to generate a first signal when N transistor pairs of the step-up converter are ready to switch. A first charging circuit is configured to charge (N-1) capacitors of the step-up converter to an input voltage of the step-up converter in response to the first signal and to generate a second signal when charging is complete. A second charging circuit is configured to sequentially charge the (N-1) capacitors of the step-up converter to (N-1) predetermined voltage values in response to the first signal and the second signal and before operation of the step-up converter begins.
    Type: Application
    Filed: March 24, 2017
    Publication date: August 17, 2017
    Inventors: Serhii Mikhailovich ZHAK, Mark Anthony BELCH, Brett A. MIWA, David HARRINGTON, Jonathan KING
  • Patent number: 9653986
    Abstract: A multi-level, step-up converter circuit includes an inductor including one terminal in communication with an input voltage supply. N transistor pairs are connected in series, where N is an integer greater than one. First and second transistors of a first pair of the N transistor pairs are connected together at a node. The node is in communication with another terminal of the inductor. Third and fourth transistors of a second pair of the N transistor pairs are connected to the first and second transistors, respectively. (N?1) capacitors have terminals connected between the N transistor pairs, respectively. An output capacitor has a terminal in communication with at least one transistor of the N transistor pair.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 16, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Serhii Mikhailovich Zhak, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Patent number: 9608512
    Abstract: A control circuit for a step-up converter includes a soft start module configured to control states of N transistor pairs of the step-up converter, where N is an integer greater than two. A driver module is in communication with the soft start module and configured to generate a first signal when N transistor pairs of the step-up converter are ready to switch. A first charging circuit is configured to charge (N?1) capacitors of the step-up converter to an input voltage of the step-up converter in response to the first signal and to generate a second signal when charging is complete. A second charging circuit is configured to sequentially charge the (N?1) capacitors of the step-up converter to (N?1) predetermined voltage values in response to the first signal and the second signal and before operation of the step-up converter begins.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 28, 2017
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Serhii Mikhailovich Zhak, Mark Anthony Belch, Brett A. Miwa, David Harrington, Jonathan King
  • Publication number: 20170073177
    Abstract: The present invention is a vertically stored dock leveler with a telescoping lip that selectively extends and retracts through a range positions relative to the deck. The lip is held and guided by a deck frame carriage. When the deck is raised and lowered, the lip is extended and retracted by an electro-hydraulic control system. When the deck reaches a preselected incline position, the lip is fully extended. Sensors on the underside of the deck determine the incline position of the deck and when the lip is retracted. The leveler is then lowered until the lip engages and rests on the bed of the trailer. Similarly, when the deck is raised for storage and reaches the preselected incline position, the lip is fully retracted prior to returning to its stored position. The telescoping lip is selectively moveable to a range of partially extended position to facilitate end loading a trailer.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 16, 2017
    Inventor: David Harrington
  • Patent number: 9564278
    Abstract: A switch may comprise a metal plate. A eutectic alloy may be proximate to the metal plate. An insulating material may be proximate to the insulating material. The insulating material may include a recess in the insulating material adjacent the eutectic alloy. A lead may be fixed in place by the insulating material. A first end of the lead is exposed from the insulating material by the recess.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: February 7, 2017
    Assignee: Goodrich Corporation
    Inventor: David Harrington
  • Patent number: 9517902
    Abstract: The present invention is a vertically stored dock leveler with a telescoping lip that selectively extends and retracts through a range positions relative to the deck. The lip is held and guided by a deck frame carriage. When the deck is raised and lowered, the lip is extended and retracted by an electro-hydraulic control system. When the deck reaches a preselected incline position, the lip is fully extended. Sensors on the underside of the deck determine the incline position of the deck and when the lip is retracted. The leveler is then lowered until the lip engages and rests on the bed of the trailer. Similarly, when the deck is raised for storage and reaches the preselected incline position, the lip is fully retracted prior to returning to its stored position. The telescoping lip is selectively moveable to a range of partially extended position to facilitate end loading a trailer.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: December 13, 2016
    Assignee: Nordock, Inc.
    Inventor: David Harrington
  • Patent number: 9415496
    Abstract: An apparatus, system, and method of fabricating a percussion tool that includes a flow tube. The flow tube includes upper and lower portions, inner and outer walls, and at least one opening formed in the outer wall. The upper portion extends from a top end towards a bottom end. The lower portion extends from the upper portion to the bottom end. The inner wall extends from the top end to the bottom end and defines a central channel therein. The outer wall extends from the top end towards the bottom end, surrounds a portion of the inner wall and defines an outer channel with the inner wall. The opening is fluidly communicable with a first conduit formed within a piston, which surrounds a portion of the flow tube, when in an up position and is fluidly communicable with a second conduit formed within the piston when in a down position.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 16, 2016
    Assignee: VAREL INTERNATIONAL IND., L.P.
    Inventors: David Harrington, Anthony Plana