The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 1990
Filed:
Jan. 24, 1990
Terry Pitzen, La Mesa, CA (US);
Gaslock Corporation, La Mesa, CA (US);
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 200.degree. 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.