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:
Oct. 16, 2001
Filed:
Jul. 30, 1999
David A. Safarik, Muskego, WI (US);
Bernard F. Enright, Brookfield, WI (US);
R. Bruce Dennert, Mukwonago, WI (US);
Bernardus G. H. Vandenhoeven, Waukesha, WI (US);
Paul Troxler, Brookfield, WI (US);
Harley-Davidson Motor Company, Milwaukee, WI (US);
Abstract
A motorcycle engine includes a crankshaft rotating in response to the reciprocation of pistons in cylinder bores. The inertial effects of the reciprocating pistons cause vibrations in the engine. A pair of balancer shafts are provided on opposite sides of the crankshaft, and are driven by the crankshaft through a drive member, such as a chain or belt. The balancer shafts are supported for rotation by bearings in the left side of the engine's crankcase, and by bearings in bearing housings that are mounted to the left side of the engine's crankcase. Thus, the balancer shafts are substantially only supported for rotation by the left side of the crankcase.