Hydraulic chain tensioner

Details Hydraulic chain tensioner Hydraulic chain tensioner

2005-09-20

2005-09-20

Charles, Marcus (Department: 3682)

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Tension adjuster or shifter driven by electrical or fluid motor

C474S109000, C474S111000

Reexamination Certificate

active

06945889

ABSTRACT:
The present invention comprises a hydraulic tensioner for applying tension to a chain without external fluid pressure supply. The hydraulic tensioner includes a piston assembly comprising a piston with a hollow interior and a piston bore surrounding the piston. An end of the piston assembly is submerged in fluid. An inlet check valve, which controls an entry of fluid into the piston, is located below the fluid level. An outlet check valve, located at an opposite end of the piston assembly from the inlet check valve, controls an exit of fluid from the piston. A non-return mechanism is coupled to the piston such that the piston extends but does not retract more than an included backlash amount. Utilizing the motion allowed within this backlash amount, the tensioner acts as a self-priming pump.

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Southern Oregon Hot Bikes; http://www.schotbikes.com/tension.htm; 3 pages.

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