Patents by Inventor David L. Kassel

David L. Kassel 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).

  • Horizontal battery holder for cylinder cells
    Patent number: 4495257
    Abstract: A battery holder for a cylinder cell is provided with a casing which receives the cell against its bottom and constrains the cell in a peripheral barrier with resilient contacts at its ends. The holder optionally has terminals projecting through its bottom for printed circuit board mounting or flat terminals with eyelets projecting from the top of the holder. A snap-on cover, which facilitates removal of the battery, can be provided.
    Type: Grant
    Filed: August 29, 1983
    Date of Patent: January 22, 1985
    Assignee: Memory Protection Devices, Inc.
    Inventors: Charles Engelstein, David L. Kassel, Harry Goodman
  • Battery holder for coin cells
    Patent number: 4487820
    Abstract: A battery holder for a coin cell provided with a casing which receives the coin cell against its bottom and laterally constrains the cell by a peripheral barrier wall. One pole of the cell is engaged by an electrical contact extending across the casing bottom, and the other pole of the cell is engaged by another electrical contact extending across the cell in resilient contact with the other pole thereof.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: December 11, 1984
    Assignee: Memory Protection Devices, Inc.
    Inventors: Charles Engelstein, David L. Kassel, Harry Goodman