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:
Jun. 11, 1991
Filed:
Feb. 20, 1990
Stephen J Lavender, Milwaukee, WI (US);
Briggs & Stratton Corporation, Wauwatosa, WI (US);
Abstract
An oil fill tube assembly for an internal combustion engine. The assembly includes a tube having a lower end communicating with the crankcase of the engine and an open upper end that is enclosed by a cap. The undersurface of the cap carries a dipstick which extends downwardly within the tube. The upper end of the tube has a pair of locking elements which are spaced circumferentially with the spaces between the elements being of different circumferential dimension. The lower edge of a peripheral flange on the cap has a pair of locking lugs of different circumferential dimension that are constructed and arranged to be received within the spaces between the locking elements of the tube as the cap is inserted on the tube. The locking elements and the locking lugs are provided with mating cam surfaces so that when the cap is rotated one quarter of a turn, a seal on the under surface of the cap will be forced against the upper end of the tube to tightly seal the cap to the tube.