Mechanical friction tensioner

Details Mechanical friction tensioner Mechanical friction tensioner

1997-10-08

1999-09-14

Graysay, Tamara L.

Endless belt power transmission systems or components

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

Load responsive tension adjuster or shifter

474111, 474138, F16H 708, F16H 722, F16H 712

Patent

active

059514230

ABSTRACT:
A mechanical friction tensioner for power transmission chains, such as engine timing chains. The tensioner provides the advantages of a conventional hydraulic tensioner, but eliminates the hydraulic pressure system by use of spring loaded wedge-shaped blocks and friction damping. The mechanical tensioner has a wedge-shaped plunger positioned within a bore in the tensioner housing. The plunger is biased outward by two spring loaded wedge-shaped blocks and a return spring. As the plunger moves inward, the wedge-shaped blocks are pushed in towards the plunger by the springs to provide friction damping.

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European Search report, EP 98 30 8037, dated Feb. 4, 1999.

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