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. 13, 2009
Filed:
Jan. 09, 2009
Yuu Sugishita, Kawagoe, JP;
Yuu Sugishita, Kawagoe, JP;
Husqvarna Zenoah Co., Ltd., Saitama, JP;
Abstract
The invention relates to an auto tensioner of a chain saw. A spiral guide groove () of the disk () engages with a protrusionof a slider piece () and the slider piece () is slidably stored in a guide portion () formed in a chain cover () via a spring (). A tensioner () comprising a protrusion () engaged with a guide bar is slidably stored in the slider piecevia a coin spring (). The protrusion () contacts an outer circumference face of the spiral guide grooveon a diameter passing through a rotating center of the disk, and an unshown nut for engaging with a stud boldprovided on an engine cover side is attached on the rotating center of the disk (). A rotation of the disk enables to fix the chain cover () and move the guide bar.