Patents by Inventor Dwight Townsend

Dwight Townsend 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).

  • Method and apparatus for sizing galvanic cell separators
    Patent number: 4669183
    Abstract: The present invention relates to an improved method for sizing thermoplastic battery separators introduced into partially assembled cells. The method comprises introducing a heated sizing punch under controlled temperature and time conditions to deform the formed thermoplastic separator and to seal its seams without degrading the separator material.
    Type: Grant
    Filed: April 10, 1986
    Date of Patent: June 2, 1987
    Assignee: Duracell Inc.
    Inventors: Wooten E. Duncan, Dwight Townsend