Patents by Inventor Borgstrom Alan D.

Borgstrom Alan D. 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).

  • Loadbreak piston stop and lockout
    Patent number: 4913658
    Abstract: A series of lanced sections are provided at the end of a movable female contact assembly in a loadbreak bushing insert to limit its extent of travel during fault closure conditions and prevent its unwanted removal from the insert housing. A locking ring is added ahead of the lanced sections to cause same to become locks by displacement from their normal positions making resetting of the female contact assembly impossible and providing a visual indication that the bushing has been involved in a fault closure situation.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: April 3, 1990
    Assignee: Amerace Corporation
    Inventors: Borgstrom Alan D., George R. Hydock