Patents by Inventor Terry Doug Wyatt

Terry Doug Wyatt 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).

  • Pressure vent-sealed primary and secondary alkaline cells
    Patent number: 4008354
    Abstract: An extrudible hot melt adhesive material is utilized in a low cost vent for an electrochemical cell to relieve abnormal pressure formed during improper use of the cell. The extrudible hot melt adhesive material is suitably joined or bonded to a member used to provide a cell top, and covers and fills a vent hole formed in the member. Material is extruded through the vent hole by abnormal pressure to open the vent hole and allow the abnormal pressure to be released through the opened vent hole. The venting pressure can be predetermined by varying vent hole diameter, amount of adhesive, and the composition of the filler adhesive material with respect to viscosity.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: February 15, 1977
    Assignee: P. R. Mallory & Co., Inc.
    Inventors: Arthur Fitchman, Terry Doug Wyatt