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. 29, 1987
Filed:
Jun. 13, 1986
Robert M Vize, Bettendorf, IA (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A removable cap assembly for closing the open end of a fill spout of a fuel tank includes a built-in valve apparatus for venting the interior of the tank to the atmosphere. The valve apparatus further seals the liquid within the tank during certain operational conditions which could cause leakage of the liquid from the tank. Previous tank caps for closing the fill spout of liquid fuel tanks used various valve means to vent the tank, or to maintain a certain positive pressure within the tank. However, most previous liquid tank valve means were complex and would not prevent leakage of liquid from within the tank if the tank should be tipped drastically or upset. The vented fuel cap assembly of the present invention is of simple construction and will prevent leakage of fuel from the tank should the tank be tipped or inverted.