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:
Oct. 18, 2011
Filed:
Aug. 31, 2006
Jeffrey A. Pendergrass, Williard, MO (US);
Robert C. Joslyn, Christian County, MO (US);
Jeffrey A. Pendergrass, Williard, MO (US);
Robert C. Joslyn, Christian County, MO (US);
Dayco Products, LLC, Miamisburg, OH (US);
Abstract
A new asymmetrically damped tensioner is provided utilizing a bearing-ramp clutch. During normal operation, the bearing-ramp clutch enables the tensioner arm to pivot in a first direction to take up belt slack with negligible frictional damping applied to the motion of the tensioner arm. When the tensioner arm pivots in a second direction, away from the belt, however, in a condition commonly known as wind-up, the bearing-ramp clutch locks against a fixed internal surface and creates a frictional damping force that is applied to the tensioner arm. This frictional linkage provides asymmetric frictional damping to the tensioner to limit movement in the second direction to mitigate wind-up.