Stretcher for a transmission belt

Details Stretcher for a transmission belt Stretcher for a transmission belt

1998-01-26

1999-11-30

Graysay, Tamara L.

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 arcuate...

474117, 474133, F16H 712

Patent

active

059933437

ABSTRACT:
Stretcher for a transmission belt comprising a fixed part suitable for being rigidly connected to a support structure and provided with a pin defining a first axis, a movable part comprising a hub rotating on the pin about the first axis, a pulley carried by the movable part and rotating with respect thereto about a second axis distinct from the first axis and parallel thereto, and a spiral spring interposed between the fixed part and the movable part and suitable for loading in use the movable part in the direction tending to keep the pulley in engagement with the relative belt. The spring has an internal end secured to the pin, and an external end secured to the hub, and is interposed between two bushes which support the hub on the fixed part and are provided with respective flanges cooperating axially with the spring.

REFERENCES:
patent: 2490974 (1949-12-01), Mallory
patent: 4596538 (1986-06-01), Henderson
patent: 4657137 (1987-04-01), Johnson
patent: 4934988 (1990-06-01), Kawamura et al.
patent: 4938734 (1990-07-01), Green et al.
patent: 4981461 (1991-01-01), Henderson
patent: 5030171 (1991-07-01), Henderson
patent: 5035679 (1991-07-01), Green et al.
patent: 5234385 (1993-08-01), Kawashima et al.

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