Hydraulically controlled tightener, in particular for a chain

Details Hydraulically controlled tightener, in particular for a chain Hydraulically controlled tightener, in particular for a chain

1988-02-09

1989-07-25

Bui, Thuy M.

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

474138, F16H 708

Patent

active

048509418

ABSTRACT:
The hydraulic tightener includes a body defining a cylindrical cavity, a piston slidably mounted in the cavity and a pressure-applying shoe for applying pressure against an endless connection such as a chain. Associated with the piston there is a high pressure chamber defined by part of the cavity and the piston, the high pressure chamber being connected to a source of hydraulic fluid under pressure through a check-valve. This high pressure chamber is fluidtight and has no orifice other than the orifice provided with the check-valve. The tightener also serves to lubricate the endless connection or chain by spraying the hydraulic fluid thereon.

REFERENCES:
patent: 4539001 (1985-09-01), Okabe
patent: 4657524 (1987-04-01), Okabe

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