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:
Aug. 19, 1997
Filed:
Oct. 25, 1995
Michael C Campbell, Virginia Beach, VA (US);
Other;
Abstract
A gas tank evacuator (10) comprises: an evacuator housing (12) to be attached to a neck (44) of a gas tank (38); and an elongated valve-removal rod (14) movably mounted on, and passing through the evacuator housing, the valve-removal rod having a valve-engaging element (56) at a lower end thereof and a manipulation knob (54) member at a top end thereof for being manipulated to cause the valve-removal rod to engage and remove the overflow valve assembly. The evacuator housing has female threads (26) to be screwed onto male threads of the gas tank attachment neck with a stop (50, 56, 72) positioning the valve-removal rod aligned with the overflow valve assembly. When the evacuator housing is screwed to the gas tank attachment neck a fixed main valve actuator (46) on the evacuator housing opens a main valve (48) of the gas tank and residue gas in the tank is released to a sealed evacuation cavity (18). A pressure gauge (16) for providing an indication of the pressure of the released gas and a filter (40) for allowing release of the released gas to atmosphere communicate with the evacuation cavity.