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. 17, 2007
Filed:
Feb. 06, 2004
Isamu Okabe, Osaka, JP;
Tomotaka Koga, Osaka, JP;
Isamu Okabe, Osaka, JP;
Tomotaka Koga, Osaka, JP;
Tsubakimoto Chain Co., Osaka, JP;
Abstract
In a roller chain transmission, the diameter D of the rollers, the outer diameter d of the pins and height H of the inner plates satisfy the relationships 0.72P≦D≦0.79P, 0.40P≦d≦0.44P, and 0.96P≦H, with respect to the chain pitch P. The sprocket teeth are asymmetric in that the chain entering side and the chain leaving side differ, and the radius R1 of an arc of the tooth gap bottom, the radius R2 of the chain entering side tooth flank and the radius R3 of the chain entering side tooth head portion satisfy the relationships 0.505D≦R1≦0.505D+0.069D, P−(0.505D+0.069D)≦R2≦P−0.505D, and 0.08≦R3≦0.13P. The transmission chain exhibits improved endurance and quietness, smooth operation, and resistance to elongation due to wear.