Fluid chain-tightener

Details Fluid chain-tightener Fluid chain-tightener

2006-04-25

2006-04-25

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

C474S111000, C474S109000

Reexamination Certificate

active

07033295

ABSTRACT:
Chain tightener comprising a first supporting surface (11) on one branch (12) of the chain and a second supporting surface (13) on the other branch (14) of the chain with each supporting surface (11,13) being connected to a respective drive piston (19,119,20,120) into which is fed fluid for thrust in a tightening direction of the respective chain branch with the hydraulic circuits of the two pistons interconnected so that when one piston (19,119or20,120) is thrust in the direction opposite tightening from the tight branch of the chain it sends its fluid into the other piston (20,120or19,119) to thrust it to tighten the corresponding slack chain branch.

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patent: 2002/0160868 (2002-10-01), Wigsten et al.

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