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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.:

US 11421561 B1

PDFFull Text
Date of Patent:
Aug. 23, 2022

Filed:

Jan. 06, 2020

Synchronous belt drive system

Applicant:

Gates Corporation, Denver, CO (US);

Inventors:

Min Gao, Jiangsu, CN;

Cindy Decker, Columbia, MO (US);

Carol Weber, Englewood, CO (US);

Douglas D. Schelhaas, Aurora, CO (US);

Kevin Ward, Dumfries & Galloway, GB;

Leslee Brown, Broomfield, CO (US);

William Fraser Lacy, Westland, MI (US);

Guogong Chen, Kunshan, CN;

John Muri, Dumfries & Galloway, GB;

Cindy Cookson, Englewood, CO (US);

Jennifer E. Pease, Lakewood, CO (US);

Justin Paulsen, Englewood, CO (US);

Patrick Joseph McNamee, Monument, CO (US);

Shawn Xiang Wu, Rochester Hills, MI (US);

Andrzej Dec, Rochester Hills, MI (US);

Assignee:

Gates Corporation, Denver, CO (US);

Attorneys:

Alyssa K. Sandrowitz, Esq.

Kevin J. Aiken, Esq.

Primary Examiner:

Henry Y Liu

Int. Cl.
CPC ...
F01L 1/02 (2006.01); F16H 7/02 (2006.01); F16G 1/04 (2006.01); F16H 55/08 (2006.01); F16H 55/17 (2006.01); F16H 7/12 (2006.01); F16G 1/28 (2006.01); F16H 7/08 (2006.01);
U.S. Cl.
CPC ...
F01L 1/024 (2013.01); F16G 1/04 (2013.01); F16G 1/28 (2013.01); F16H 7/023 (2013.01); F16H 7/1281 (2013.01); F16H 55/084 (2013.01); F16H 55/171 (2013.01); F16H 2007/081 (2013.01); F16H 2007/0865 (2013.01); F16H 2007/0893 (2013.01);
Abstract

A synchronous belt drive system having: a synchronous belt with a tensile cord of high-modulus fiber such as glass, carbon, PBO, or aramid; a driver sprocket and at least one driven sprocket, at least one of which is an obround sprocket; and a tensioner having: a base having a cylindrical portion extending axially with a radially outer surface and a receiving portion, an eccentric arm pivotally engaged with the radially outer surface, a torsion spring disposed within the receiving portion, the torsion spring applying a biasing force to the eccentric arm, and a pulley journalled to the eccentric arm. Preferably, no one of the eccentric arm, pulley, or torsion spring is axially displaced along an axis A-A from the others. The obround sprocket has a toothed surface and at least one linear portion disposed between two arcuate portions having a constant radius, the linear portion having a predetermined length.

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