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:
Feb. 20, 2007
Filed:
Mar. 07, 2005
Roland Schmidt, Korb, DE;
Werner Geyer, Berglen, DE;
Roland Schmidt, Korb, DE;
Werner Geyer, Berglen, DE;
Andreas Stihl AG & Co. KG, Waiblingen, DE;
Abstract
The invention is directed to a crankshaft () of an internal combustion engine including an internal combustion engine for a portable handheld work apparatus such as a motor-driven chain saw or the like. The invention is also directed to a method for making the crankshaft () as well as an internal combustion engine with a corresponding crankshaft (). The crankshaft () is made up of separately manufactured parts and includes a crank arm () having a central cutout () for accommodating a shaft lug () of the crankshaft () and an eccentric cutout () for accommodating a crank pin (). The crank pin () journals a connecting rod (). A centrifugal mass portion () is provided on the crank arm () at its end lying opposite the eccentric cutout (). The centrifugal mass portion () is configured as one piece with the crank arm () and is bent out of a plane () of the crank arm () in the direction of the connecting rod ().