Patents by Inventor Terry Pitzen

Terry Pitzen 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: 4955404
    Abstract: A method and apparatus for sealing a leaking valve on a compressed gas tank to accomodate safe transport of the tank and valve from the place of use in the field to a repair depot where the tank and valve may be safely serviced. The apparatus comprises a valve cap specifically designed for practice of the method. The method resides in the steps of placing the cap over the leaking valve and attaching the cap to the tank, filling the cap with a fusible substance in liquified form, the fusible substance having a fusion temperature in excess of ambient temperature but less than about F. and, upon cooling, solidifying within the cap about the valve, sealing off the cap, transporting the tank, cap and encapsulated valve from the place of use to a repair depot, at the repair depot converting the fusible substance from solidifed form to liquified form and draining the substance from the cap, and removing the cap from the tank and valve to accommodate safe servicing of the valve at the repair depot.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: September 11, 1990
    Assignee: Gaslock Corporation
    Inventor: Terry Pitzen