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:
Jul. 09, 2002
Filed:
Jul. 31, 2000
Thomas K. Bricko, Lakeville, MN (US);
David A. Murray, Eagan, MN (US);
The Toro Company, Minneapolis, MN (US);
Abstract
A sprocket is disclosed for driving a chain with a plurality of chain rollers. The sprocket may be used to drive a material removal chain of a trencher. The sprocket has various cut-aways or reliefs on each face thereof to more effectively clear particulate debris from beneath chain rollers during cutting or digging operations. The sprocket also has asymmetrical teeth designed to help minimize changes in pitch diameter due to debris entrained beneath chain rollers. Reducing changes in pitch diameter greatly reduces premature wear of the sprocket and its chain. Reducing changes in pitch diameter also greatly reduces the tendency for the chain to bind.