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:
Aug. 06, 1985
Filed:
Jun. 11, 1984
Hans Mezger, Freiberg, DE;
Harley-Davidson Motor Co., Inc., Milwaukee, WI (US);
Abstract
The crankshaft of an internal combustion engine for vehicles, especially motorcycles, is mounted between upper and lower parts of a crankcase. The crank webs of the shaft rotate partially in the lower part which is in the form of an oil space. An oil sump is also provided in the lower part at a lower level than the oil space. The lower part of the crankcase has a curved floor formed at a distance from the crank webs, and such floor has one or more oil return ducts therein. The ducts are disposed in the vicinity of the path of movement of the crank webs. The ducts are, in fact, opposite the crank webs and each of the ducts have a slope to them. Each of the ducts extend between walls of bearing seats provided in the engine.