Chain drive tensioner spring force control mechanism

Patent No. 9,377,087 and 9,377,088

Issued: June 28, 2016
Filed: March 4, 2014
Term Extension:  days

Inventors: Todd; Kevin B. (Freeville, NY), Patton; Mark E. (Dryden, NY), Smith; Dale N. (Freeville, NY)
Assignee: BorgWarner Inc. (Auburn Hills, MI)


A tensioner which adjusts the mean tensioner force to keep the chain tension as low as possible without sacrificing chain control, significantly improving drive efficiency as the chain wears and is subject to low dynamic loads.

Reference to Related Applications

This application claims priority from International Application No. PCT/US2012/053830, entitled "CHAIN DRIVE TENSIONER SPRING FORCE CONTROL MECHANISM, which was filed on Sep. 6, 2012, which claims the benefit of Provisional Application No. 61/537,651, entitled, "CHAIN DRIVE TENSIONER SPRING FORCE CONTROL MECHANISM, filed Sep. 22, 2011; and also claims priority from International Application No. PCT/US2014/019329, entitled, "CHAIN DRIVE TENSIONER SPRING FORCE CONTROL MECHANISM filed Feb. 28, 2014. This application also claims the benefit of Provisional Application No. 61/772,673 filed Mar. 5, 2013, entitled "CHAIN DRIVE TENSIONER SPRING FORCE CONTROL MECHANISM". The aforementioned applications are hereby incorporated herein by reference.


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