Patents by Inventor by Betty J. Jenks, executrix

by Betty J. Jenks, executrix 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 for making racket frames
    Patent number: 4361533
    Abstract: Two small diameter fiberglass tubes are rolled on silicone rubber slugs and inserted into a larger cylinder which is then pinched into a figure-8 shape. This is put in the curing mold. When heated the silicone rubber expands to push the fiberglass into contact with mold surfaces. After cooling the slugs can be pulled lengthwise, which reduces their diameter so they are self freeing from within the cured frame.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: November 30, 1982
    Assignee: AMF Incorporated
    Inventors: Herbert R. Jenks, deceased, by Betty J. Jenks, executrix