Patents by Inventor Douglas Lafferty

Douglas Lafferty 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: 6985059
    Abstract: A circuit breaker includes a crank for coupling a rotary arm breaker mechanism to the cradle. The crank has a protrusion which cooperates with a handle yoke to restrict movement of the operating handle when the contacts of the circuit breaker are welded. The crank protrusion is arranged such that it does not interfere with the handle under normal operating conditions.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: January 10, 2006
    Assignee: General Electric Company
    Inventors: Ananthram Subramanian, Ronald Ciarcia, Narender Macha, Luis Brignoni, Paul Douglas Lafferty
  • Patent number: 6930577
    Abstract: A molded insulator cover for a circuit breaker molded case includes a terminal connector attachable to the strap terminal. The terminal connector is disposed in the circuit breaker molded case and an insulator discrete from the molded case is disposed around the terminal connector. The insulator is trapped into the circuit breaker molded case by attachment of the terminal connector to the strap terminal. The insulator is configured to be used with a plurality of different field installable terminal connectors.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: August 16, 2005
    Assignee: General Electric Company
    Inventors: Ananthram Subramanian, Ronald Ciarcia, Narender Macha, Luis Brignoni, Paul Douglas Lafferty
  • Patent number: 6724286
    Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: April 20, 2004
    Assignee: General Electric Company
    Inventors: David Arnold, Thomas G. O'Keeffe, Paul Douglas Lafferty
  • Publication number: 20020089401
    Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.
    Type: Application
    Filed: March 26, 2002
    Publication date: July 11, 2002
    Inventors: David Arnold, Thomas G. O'Keeffe, Paul Douglas Lafferty
  • Patent number: 6404314
    Abstract: An adjustable solenoid having an enclosure containing a winding through which a current is passed. The winding defines an area and a plunger is positioned at one end of the area with a mechanical biasing mechanism for providing a biasing force to the plunger, the mechanical biasing mechanism is secured to the plunger at one end and a support at the other end. A stator having a first threaded portion engaged within a threaded opening of the enclosure causes the stator to travel between a first position and a second position as a rotational force is applied to the stator.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: June 11, 2002
    Assignee: General Electric Company
    Inventors: David Arnold, Thomas G. O'Keeffe, Paul Douglas Lafferty
  • Patent number: D796112
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 29, 2017
    Assignee: Nicoventures Holdings Limited
    Inventors: Douglas Lafferty, Marina Trani, Elly Criticou, Fozia Saleem, Lily Raissi-Dekhordy