Patents by Inventor Frank J. Russell

Frank J. Russell 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).

  • Patent number: 4402894
    Abstract: An improved method for producing a ceramic resistor is disclosed. The method comprises the steps of charging ceramic batch into a longitudinally extending die, pressing the batch in the die between opposing plungers, removing one plunger from the die, ejecting the blank by moving the other plunger relative to the blank and firing the blank. The improvement constitutes imparting rotational motion to the removable plunger as applied pressure thereon is being released to remove the plunger from the die, whereby the surface of the plunger in contact with the blank separates therefrom without sticking.
    Type: Grant
    Filed: January 5, 1982
    Date of Patent: September 6, 1983
    Assignee: Champion Spark Plug Company
    Inventors: Joseph Nemeth, Frank J. Russell