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. 05, 1991
Filed:
Mar. 12, 1990
Gregory L Hupfer, West Bend, WI (US);
Gregory R Schmidt, Port Washington, WI (US);
Thomas A McNabb, Milwaukee, WI (US);
Briggs & Stratton Corporation, Wauwatosa, WI (US);
Abstract
Breather apparatus is disclosed for relieving engine crankcase pressure when the engine is tipped or rotated. The breather apparatus consists of a duct intake connected to the crankcase, an elongated duct, and a drain hole for draining oil back into the crankcase. The duct intake should be positioned in an area of low oil splash. The drain hole should be positioned so that it is not submerged in oil while being tipped 90.degree. in either a clockwise or a counter-clockwise direction about the engine's vertical centerline. The breather assembly is particularly suitable for lawnmowers that are tipped during cleaning.