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:
Nov. 10, 1981
Filed:
Jan. 03, 1980
Russell D Keller, Milwaukie, OR (US);
Other;
Abstract
A fuel tank vent apparatus includes an upper housing for enclosing a movable weight in the form of a metal ball. The lower part of the apparatus is provided with venting ports closable by a push rod operated piston, wherein such push rod is spring biased upwardly toward the aforementioned metal ball. For a normal, upright position of the apparatus, the ball is centered in its housing by a ramp and urges the push rod downwardly against spring bias whereby ports into the tank are open allowing venting. However, if the apparatus becomes inclined to a predetermined angle, the ball is supported to a greater extent by the ramp surrounding the push rod, allowing the biasing spring to urge the push rod upwardly for moving the piston and closing the vents. Thus, should a vehicle containing this vent apparatus overturn or otherwise be oriented at greater than a predetermined angle whereby fuel would be apt to escape, the vent will be closed in response to spring bias.