Patent ID: 7530911
Filing Date: 2009-05-12
Classification: F16H

Abstract:
1. A belt tensioner for a belt drive system comprising: a first belt tensioner pulley; a crankshaft pulley; an accessory pulley; and a power transmission belt trained about said first belt tensioner pulley, said crankshaft pulley, and said accessory pulley, said belt tensioner including an attachment point adapted to be affixed to a stationary point relative to a cylinder block of an engine, a track, a first carrier mounted in sliding relation with said track with two degrees freedom of movement, said first belt tensioner pulley rotatably mounted upon said first carrier for engaging said power transmission belt, a resilient member biasing said first carrier in longitudinal relation to said track, and a first travel limiting bumper limiting travel of said first carrier along said track said first travel limiting bumper including an adjustment mechanism which provides an adjustable tensioner travel limit without altering the biasing provided by said resilient member.