Tensioning device for flexible drive element

Details Tensioning device for flexible drive element Tensioning device for flexible drive element

1987-01-20

1989-01-17

Bui, Thuy M.

Endless belt power transmission systems or components

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

474111, 474140, F16H 708

Patent

active

047985623

ABSTRACT:
A tensioning device (10) for a flexible drive element (16), the tensioning device comprising a first tensioning member (40) having a first contact surface (58), and a second tensioning member (140) having a second contact surface (158). Straps (34, 36) and positioning devices (42, 44, 142, 144) secure the first and second tensioning members a selected distance away from one another. In one arrangement, the positioning devices form a ratchet-like mechanism arranged such that the force required to move the tensioning members toward one another is smaller than the force required to move the tensioning members away from one another. The tensioning device may be operated without any members securing the tensioning device with respect to the sprockets.

REFERENCES:
patent: 1338405 (1920-04-01), Stickney
patent: 3295383 (1967-01-01), Allen
patent: 3926063 (1975-12-01), Mayfield
patent: 3941006 (1976-03-01), Brodesser
patent: 4068535 (1978-01-01), Sheets
patent: 4662862 (1987-05-01), Matson

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