Constant belt tension device

Details Constant belt tension device Constant belt tension device

1980-04-21

1982-04-27

Husar, C. J.

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...

74470, 188371, 267153, 403225, F16H 712

Patent

active

043268480

ABSTRACT:
A constant-tension spring device for the accessory belt of an automobile engine. The device includes a cylinder having an elastomer ring mounted within each of its ends. A rod passes through each elastomer ring, the rod having spaced shoulders each bearing against one end of a respective elastomer ring. Abutments within the cylinder position and retain the elastomer rings. Upon sufficient axial motion between the rod and cylinder, the elastomer rings are distorted by twisting and display a flat segment of the load vs. deflection curve between the rod and cylinder. The spring device maintains a desired tension within the accessory belt, compensating for temperature, humidity, and ageing changes in belt length which would otherwise result in change of belt tension.

REFERENCES:
patent: 2179959 (1939-11-01), Schroedter
patent: 2189870 (1940-02-01), Sluyter
patent: 2538955 (1951-01-01), Efromson et al.
patent: 2609194 (1952-09-01), Krotz
patent: 2716566 (1955-08-01), Thiry
patent: 2819060 (1958-01-01), Neidhart
patent: 3583530 (1971-06-01), De Venne

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