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.:

US 7152569 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 26, 2006

Filed:

Jun. 30, 2004
Applicants:

Stephan Leiber, Marchtrenk, AT;

Robert Kindl, Gunskirchen, AT;

Inventors:

Stephan Leiber, Marchtrenk, AT;

Robert Kindl, Gunskirchen, AT;

Assignee:

BRP-Rotax GmbH & Co. KG, Gunskirchen, AT;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01M 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An engine crankshaft includes a split crankshaft journal that includes offset connecting rod journals for two connecting rods. Oil supply systems disposed on opposite axial sides of the crankshaft journal each lubricate a corresponding one of the connecting rod journals. The oil supply systems are either axial or peripheral oil supply systems that do not require oil to be supplied to the crankshaft through the main crankcase bearings. Consequently, the oil supply systems sufficiently lubricate each connecting rod journal without requiring weakening holes or grooves in the main crankcase bearings.


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Leiber, Stephan. (2006). Lubrication oil supply for crankshaft (U.S. Patent No. 7152569). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7152569

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