Tensioner with spring force control
Patent No. 10,077,825
Issued: September 18, 2018
Inventor: Todd; Kevin B. (Freeville, NY), Smith; Dale N.
(Freeville, NY), Williamson; Robert G (Breesport, NY), O'Shea; Fenton
A tensioner for tensioning a chain or belt span which uses two pistons. The movement of the two pistons may be coupled together. The first piston provides damping to the chain span and a second piston provides variable, dominant and automatically adjusting spring force to the chain span. The tensioner automatically adjusts the mean tension force to keep the chain or belt tension as low as possible without sacrificing chain or belt control, significantly improving drive efficiency at new chain or belt conditions and conditions with dynamic loads.
Reference to Related Applications
Claims benefit of Provisional Application 61/774,059, filed Mar 7, 2013.
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