Patents by Inventor Bobby J. Bragg

Bobby J. Bragg 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).

  • Thermal switch disc for short circuit protection of batteries
    Patent number: 4973936
    Abstract: A protective device for one battery or serially arranged battery cells is adapted to fit between one battery and its terminal connector or between adjacent battery cells. The device incorporates a disk of positive temperature coefficient material having a pair of circular end faces for contact. The disk is supported by a ring adhesively joined thereto, the ring having a central axial opening to enable the button terminal of a battery cell to contact against the disk as the disk and battery cell are arranged in a single battery application or in serial contact with similar battery cells.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: November 27, 1990
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Adminstration
    Inventors: Eric C. Dimpault-Darcy, Bobby J. Bragg