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:
May. 19, 2009
Filed:
Nov. 01, 2005
Applicant:
Masatoshi Sonoda, Osaka, JP;
Inventor:
Masatoshi Sonoda, Osaka, JP;
Assignee:
Tsubakimoto Chain Co., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 55/30 (2006.01); F16H 7/06 (2006.01); F16G 1/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a sprocket for a chain transmission, teeth are disposed around the circumference of the sprocket at intervals. Arc-shaped tooth gap bottoms are formed between adjacent teeth, and each tooth gap bottom is continuous with the facing tooth surfaces of its adjacent teeth. Each tooth is formed so that its thickness is greater than the thickness of an ISO tooth form and gradually becomes thinner from the pitch line toward the tooth head. At engagement of the chain with the sprocket, a roller first comes into contact with a back tooth surface so that polygonal movement is suppressed.