Patents by Inventor Franklin Willis Freeborn

Franklin Willis Freeborn 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).

  • Composite arc shields for vacuum interrupters and methods for forming same
    Patent number: 10679806
    Abstract: The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: June 9, 2020
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Louis Grant Campbell, Eric Dennis Smith, Franklin Willis Freeborn
  • COMPOSITE ARC SHIELDS FOR VACUUM INTERRUPTERS AND METHODS FOR FORMING SAME
    Publication number: 20180075991
    Abstract: The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Applicant: EATON CORPORATION
    Inventors: LOUIS GRANT CAMPBELL, ERIC DENNIS SMITH, FRANKLIN WILLIS FREEBORN
  • Composite arc shields for vacuum interrupters and methods for forming same
    Patent number: 9875869
    Abstract: The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: January 23, 2018
    Assignee: EATON CORPORATION
    Inventors: Louis Grant Campbell, Eric Dennis Smith, Franklin Willis Freeborn
  • Vacuum switching apparatus and electrical contact therefor
    Patent number: 9552941
    Abstract: An electrical contact is for a vacuum switching apparatus. The vacuum switching apparatus includes a second electrical contact. The electrical contact includes a body having a center point and a periphery, the body including a plurality of arcing surfaces structured to face in a first direction toward the second electrical contact and structured to move into and out of engagement with the second electrical contact, and a plurality of arc spinning portions each defining a slot extending inwardly from the periphery generally toward the center point, the plurality of arc spinning portions generally separating the plurality of arcing surfaces from one another. At least one arc spinning portion narrows from a corresponding pair of adjacent arcing surfaces of the body to an interior thereof in a second direction opposite the first direction.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: January 24, 2017
    Assignee: EATON CORPORATION
    Inventors: Wangpei Li, Martin B. J. Leusenkamp, Franklin Willis Freeborn
  • COMPOSITE ARC SHIELDS FOR VACUUM INTERRUPTERS AND METHODS FOR FORMING SAME
    Publication number: 20160104590
    Abstract: The disclosed concept pertains to vacuum interrupters and arc-resistant shields. The arc-resistant shields are positioned in between a ceramic insulator. Each end of the arc-resistant shield is hermetically sealed to the ceramic insulator. The arc-resistant shield includes an outer surface and an inner surface. The inner surface includes an arc-resistant material. Disposed within the arc-resistant shield is a pair of electrode assemblies which are separable to establish arcing. In certain embodiments, the arc-resistant material is copper-chromium alloy.
    Type: Application
    Filed: October 13, 2014
    Publication date: April 14, 2016
    Applicant: EATON CORPORATION
    Inventors: LOUIS GRANT CAMPBELL, Eric Dennis Smith, Franklin Willis Freeborn