Tensioner for a chain, a belt or the like

Details Tensioner for a chain, a belt or the like Tensioner for a chain, a belt or the like

1988-11-09

1990-02-20

Bui, Thuy M.

Endless belt power transmission systems or components

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

Tension adjuster has surface in sliding contact with belt

474138, F16H 708

Patent

active

049022660

ABSTRACT:
A tensioner is provided with a female screw member for the tension adjustment of a belt or a chain screwed with a male screw provided a rotation force by a spring and a bearing in which the female screw member is inserted and constrains the rotation of the female screw member.
In this tensioner, an outer form of the female screw member is formed so as to correspond to a bearing hole of the bearing. By this, an approximately whole length of the female screw member is able to slide through the bearing hole, and the stroke length of the female member can be secured sufficiently even if the size of the device in a tension controlling direction is shortened.

REFERENCES:
patent: 4300890 (1981-11-01), Hallmann et al.
patent: 4702726 (1987-10-01), Ojima et al.
patent: 4722720 (1988-02-01), Ojima et al.

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