Patent ID: 8535187
Filing Date: 2013-09-17
Classification: F01L,F02B,F16H

Abstract:
1. A cam drive tensioner for use with an engine having a cam drive chain, the tensioner comprising: a main body having a first fluid inlet port and a second fluid inlet port, with said first and second fluid inlet ports being in fluid communication with each other, and a floor having a first piston mounting surface and a second piston mounting surface, with the first piston mounting surface having a first fluid outlet port in fluid communication with the first fluid inlet port, and the second piston mounting surface having a second fluid outlet port in fluid communication with the second fluid inlet port; a first piston having a first top end and a first open bottom end that forms a first fluid chamber in combination with the first piston mounting surface; a second piston having a second top end and an second open bottom end that forms a second fluid chamber in combination with the second piston mounting surface; and a shoe movable with respect to the main body, with the first and second pistons each disposed in between the shoe and the main body so that fluid pressure applied to the first and second fluid inlet ports urges the shoe away from the main body.