Patents by Inventor Robert A. Prok

Robert A. Prok 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).

  • Battery with tester label and method for producing it
    Patent number: 5538806
    Abstract: A battery encased with a label containing an integral test circuit device that is activated by depressing a selected area of the label whereupon a thermally sensitive material displays whether the battery has capacity. A method for producing the test circuit device is also disclosed.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: July 23, 1996
    Assignees: Morgan Adhesive Company, Eveready Battery Company, Inc.
    Inventors: Victor H. Weiss, John G. Langbehn, Dean A. Laird, Gary R. Tucholski, Robert A. Prok
  • Combination gas recombination/venting means for portable lighting device
    Patent number: 5535107
    Abstract: An electrochemically operated device such as a portable lantern, with a waterproof housing enclosing at least one galvanic battery cell which evolves hydrogen gas, and a push button switch in the housing, a shiftable boot exposed to the housing exterior and aligned on the interior with the switch, a hydrogen recombination pellet in the housing, and a pellet retainer retaining the pellet, the housing including an elastomeric septum between its interior and exterior, having a sphincter orifice therethrough of a size to be elastomerically squeezed closed except under a predetermined pressure differential thereacross, to thereby prevent water entry to the housing, but to open to allow hydrogen gas escape from the housing at a pressure differential across the septum. The boot is resilient and the elastomeric septum preferably forms a part of the boot.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: July 9, 1996
    Assignee: Eveready Battery Company, Inc.
    Inventor: Robert A. Prok
  • Battery with tester label and method for producing it
    Patent number: 5393618
    Abstract: A battery encased with a label containing an integral test circuit device that is activated by depressing a selected area of the label whereupon a thermally sensitive material displays whether the battery has capacity. A method for producing the test circuit device is also disclosed.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: February 28, 1995
    Assignee: Eveready Battery Company, Inc.
    Inventors: Victor H. Weiss, John G. Langbehn, Dean A. Laird, Gary R. Tucholski, Robert A. Prok