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:
Mar. 31, 1992
Filed:
Nov. 05, 1990
Applicant:
Inventor:
John H Williams, Augusta, GA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F / ; F01M / ;
U.S. Cl.
CPC ...
33725 ; 33722 ; 33728 ; 33730 ; 1521 / ;
Abstract
A dipstick is suspended from a pivoting mount in the center of a cap. When performing a fluid level check, this cap is loosened from a wiper plug, which remains stationary in its tube housing as the dipstick is withdrawn through it. A series of internal wipers clean the dipstick as it passes through the wiper plug. Wiped fluids return to the fluid reservoir via undercuts in the individual wiper blades. The clean dipstick is then reinserted into the wiper plug to full depth, and the cap retightened on the wiper plug. The cap, dipstick, and wiper plug are then withdrawn together by pulling upwards from their tube housing. The actual fluid level in the reservoir will now show on the dipstick.