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:
Dec. 28, 2010
Filed:
Oct. 01, 2007
Fraser Lacy, Dumfries, GB;
Fraser Lacy, Dumfries, GB;
The Gates Corporation, Denver, CO (US);
Abstract
A synchronous belt drive system comprising an obround sprocket () having a toothed surface and at least one linear portion () disposed between two arcuate portions (), the arcuate portions having a constant radius (R, R), the linear portion having a predetermined length, a second sprocket () having a toothed surface, the second sprocket engaged to the obround sprocket by an endless toothed member (), the second sprocket connected to a rotary load, the rotary load having cyclic torque fluctuations, and a radius (R) of the obround sprocket () oriented at a belt entry point () which coincides with a maximum amplitude of a cyclic torque fluctuation such that a span length (SL) of the endless toothed member is made to vary in a manner that substantially cancels the cyclic torque fluctuations.