Patents by Inventor Don Hamilton

Don Hamilton 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: 12359828
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Grant
    Filed: January 30, 2024
    Date of Patent: July 15, 2025
    Assignee: Evapco, Inc.
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Publication number: 20240288183
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Application
    Filed: January 30, 2024
    Publication date: August 29, 2024
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Patent number: 11885513
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: January 30, 2024
    Assignee: Evapco, Inc.
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Publication number: 20230108961
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Application
    Filed: June 15, 2021
    Publication date: April 6, 2023
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Patent number: 11035594
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Single or dual phase cyclonic separators may also be housed in the plenum of the evaporative condenser.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: June 15, 2021
    Assignee: Evapco, Inc.
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Publication number: 20180163998
    Abstract: A packaged, pumped liquid, evaporative-condensing recirculating ammonia refrigeration system with charges of 10 lbs or less of refrigerant per ton of refrigeration capacity. The compressor and related components are situated inside the plenum of a standard evaporative condenser unit, and the evaporator is close coupled to the evaporative condenser. Prior art large receiver vessels may be replaced with a single or dual phase cyclonic separator also housed in the plenum of the evaporative condenser.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 14, 2018
    Inventors: Kurt L. Liebendorfer, Gregory S. Derosier, Trevor Hegg, Sarah L. Ferrari, Don Hamilton, Nicholas Hesser, Kenneth Wright
  • Patent number: 7937815
    Abstract: An apparatus for securing a trim cover to a foam pad includes a base and a platform coupled thereto that defines a working surface for supporting the foam pad thereon. A plurality of actuators project from the working surface. Each actuator is capable of movement away from and toward the working surface and includes a pair of retaining fingers capable of movement between an open and closed position. In use, the retaining fingers grasp a first connecting member on the trim cover and move the first connecting member toward the working surface as the actuators are moved toward the working surface so as to engage the first connecting member with a second connecting member in the foam pad thereby securing the trim cover to the foam pad.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 10, 2011
    Assignee: Lear Corporation
    Inventors: Larry Hamilton, Brian Zapalski, Don Hamilton, James Szura
  • Publication number: 20090007407
    Abstract: An apparatus for securing a trim cover to a foam pad includes a base and a platform coupled thereto that defines a working surface for supporting the foam pad thereon. A plurality of actuators project from the working surface. Each actuator is capable of movement away from and toward the working surface and includes a pair of retaining fingers capable of movement between an open and closed position. In use, the retaining fingers grasp a first connecting member on the trim cover and move the first connecting member toward the working surface as the actuators are moved toward the working surface so as to engage the first connecting member with a second connecting member in the foam pad thereby securing the trim cover to the foam pad.
    Type: Application
    Filed: September 19, 2008
    Publication date: January 8, 2009
    Applicant: LEAR CORPORATION
    Inventors: Larry Hamilton, Brian Zapalski, Don Hamilton, James Szura
  • Patent number: 7430793
    Abstract: An apparatus for securing a trim cover to a foam pad includes a base and a platform coupled thereto that defines a working surface for supporting the foam pad thereon. A plurality of actuators project from the working surface. Each actuator is capable of movement away from and toward the working surface and includes a pair of retaining fingers capable of movement between an open and closed position. In use, the retaining fingers grasp a first connecting member on the trim cover and move the first connecting member toward the working surface as the actuators are moved toward the working surface so as to engage the first connecting member with a second connecting member in the foam pad thereby securing the trim cover to the foam pad.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: October 7, 2008
    Assignee: Lear Corporation
    Inventors: Larry Hamilton, Brian Zapalski, Don Hamilton, James Szura
  • Publication number: 20070017080
    Abstract: An apparatus for securing a trim cover to a foam pad includes a base and a platform coupled thereto that defines a working surface for supporting the foam pad thereon. A plurality of actuators project from the working surface. Each actuator is capable of movement away from and toward the working surface and includes a pair of retaining fingers capable of movement between an open and closed position. In use, the retaining fingers grasp a first connecting member on the trim cover and move the first connecting member toward the working surface as the actuators are moved toward the working surface so as to engage the first connecting member with a second connecting member in the foam pad thereby securing the trim cover to the foam pad.
    Type: Application
    Filed: July 25, 2005
    Publication date: January 25, 2007
    Inventors: Larry Hamilton, Brian Zapalski, Don Hamilton, James Szura
  • Patent number: 6832503
    Abstract: The present invention relates to a weight-drop machine for calibrating and verifying the calibration of an occupant detection system in a vehicle. The machine comprises a lift frame that is adapted to support and lift a seat pallet toward a keeper plate to cause the pallet to engage the keeper plate so that the pallet is prevented from movement. Another weight-drop machine a weight supported for movement relative to a frame, which, in turn, is supported for movement in a direction having both a horizontal component and a vertical component of movement in a single motion. Yet another weight-drop machine comprises one or more sensors that are adapted to sense the position of a vehicle seat. Still another weight-drop machine comprises a sensor for measuring displacement of the drop weight. A towel bar lift may be provided for lifting a towel bar for operating a manual seat lock mechanism.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: December 21, 2004
    Assignee: Lear Corporation
    Inventors: Mark Marentic, John Sapielak, Roland Monk, Derek Thomas, Gary Rock, Glenn Kremer, Don Hamilton, Greg Krom, Matt Debusk, Troy Deuchler, John Nathan
  • Publication number: 20040118178
    Abstract: The present invention relates to a weight-drop machine for calibrating and verifying the calibration of an occupant detection system in a vehicle. The machine comprises a lift frame that is adapted to support and lift a seat pallet toward a keeper plate to cause the pallet to engage the keeper plate so that the pallet is prevented from movement. Another weight-drop machine a weight supported for movement relative to a frame, which, in turn, is supported for movement in a direction having both a horizontal component and a vertical component of movement in a single motion. Yet another weight-drop machine comprises one or more sensors that are adapted to sense the position of a vehicle seat. Still another weight-drop machine comprises a sensor for measuring displacement of the drop weight. A towel bar lift may be provided for lifting a towel bar for operating a manual seat lock mechanism.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Inventors: Mark Marentic, John Sapielak, Roland Monk, Derek Thomas, Gary Rock, Glenn Kremer, Don Hamilton, Greg Krom, Matt Debusk, Troy Deuchler, John Nathan
  • Patent number: 6643925
    Abstract: An installation device for installing a flexible sensor apparatus on a seating surface of a seat cushion includes an installation fixture having a saddle. The saddle includes a first face having a seating portion recess formed therein which generally conforms to the shape of the seating surface of the seat cushion. The first face further has at least one locating recess formed in the seating portion recess. The locating recess generally conforms to the shape of a portion of the flexible sensor apparatus. The saddle further has ports extending from the locating recess to a vacuum source, wherein a vacuum from the vacuum source retains the flexible sensor apparatus in the locating recess.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: November 11, 2003
    Assignee: Lear Corporation
    Inventors: Raymond J. Ormachea, Don Hamilton, Paul S. Severinski, Alan A. Boisvert
  • Patent number: 6578722
    Abstract: The present invention is for a portable hoist assembly that includes a base member, an upright support member and a boom. A winch and line are attached to the hoist assembly with an engagement member for lifting objects. The base member attaches to a receiving member. The receiving member may be a trailer hitch on a vehicle. The boom and base member pivot with respect to the support member to a collapsed storage position. The boom and base member extend substantially parallel to the support member, and an end of the boom attaches to the base member. The engagement member is inserted within the base member for storage.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: June 17, 2003
    Inventors: Scott Perkins, Don Hamilton
  • Publication number: 20030000906
    Abstract: The present invention is for a portable hoist assembly that includes a base member, an upright support member and a boom. A winch and line are attached to the hoist assembly with an engagement member for lifting objects. The base member attaches to a receiving member. The receiving member may be a trailer hitch on a vehicle. The boom and base member pivot with respect to the support member to a collapsed storage position. The boom and base member extend substantially parallel to the support member, and an end of the boom attaches to the base member. The engagement member is inserted within the base member for storage.
    Type: Application
    Filed: June 29, 2001
    Publication date: January 2, 2003
    Inventors: Scott Perkins, Don Hamilton
  • Patent number: 6083337
    Abstract: An assembly for use in bonding an trim cover to a foam pad along a pair of conveyor line in a process of a plurality of stations. A plurality of tool carriers are transported along each of the conveyor lines to each station. The tool carrier supports at least one mold assembly for bonding an air impervious adhesive film between the cover and the foam pad. A collar assembly pivotally supports a press platen above the mold assembly and provides pivotal movement between an open position spaced at a predetermined angle above the mold assembly and a closed position compressing the foam pad against the trim cover and mold assembly. The tool carrier includes a pair of vacuum inlet connectors for engagement by a vacuum snorkel to provide vacuum pressure to the mold assembly and travel with the tool carrier along the conveyor line between consecutive process stations.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: July 4, 2000
    Assignee: Lear Corporation
    Inventors: Robert Bailey, Scott Barber, John Sapielak, Ron Monk, Dennis Sosnowski, Raymond Ormachea, Brian Scholfield, Don Hamilton