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:
Sep. 21, 2004
Filed:
Oct. 10, 2002
Applicant:
Inventors:
David Haman, Stuart, FL (US);
Richard P. Kolb, Prairieview, IL (US);
Assignee:
Bombardier Recreational Products Inc., Saint-Bruno, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01M 1/00 ;
U.S. Cl.
CPC ...
F01M 1/00 ;
Abstract
A cylinder block assembly for an internal combustion engine having a cylinder block and a plurality of cylinders includes an oil port in each of the cylinders. An annular groove is located in each cylinder wall so that oil flowing from the oil port flows into the annular groove to lubricate the skirt of the piston. An opening may be located in the piston so that oil flowing from the oil port flows into and through the piston opening when the piston is at a predetermined position, thereby directly injecting oil into the piston to lubricate the wrist pin of the piston.