Automatic hydraulic tensioner

Details Automatic hydraulic tensioner Automatic hydraulic tensioner

1997-10-23

1998-11-10

Marmor, Charles A.

Endless belt power transmission systems or components

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

Guide roll mounted for movement of its axis along...

474110, F16H 708, F16H 712

Patent

active

058335633

ABSTRACT:
An automatic hydraulic tensioner according to the present invention is provided with a communication mechanism for allowing a space radially inside a plunger-side end wire portion of a coil spring to communicate with a small clearance between the plunger and a cylinder. This automatic hydraulic tensioner thus succeeds, with a simple structure, in preventing bubbles from remaining within a pressure chamber and appropriately maintaining the tension applied to a power transmitting means such as a belt, a chain or the like.

REFERENCES:
patent: 4985 (1991-01-01), Schmidt et al.
patent: 4708696 (1987-11-01), Kimura et al.
patent: 4772251 (1988-09-01), Goppelt et al.
patent: 4790796 (1988-12-01), Okabe et al.
patent: 4950209 (1990-08-01), Kawashima et al.

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