Drive chain tensioner

Details Drive chain tensioner Drive chain tensioner

1992-09-29

1993-10-26

Bui, Thuy M.

Endless belt power transmission systems or components

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

F16H 708

Patent

active

052561119

ABSTRACT:
An apparatus for tensioning a belt or cable, reeved about first and second pulleys or sprockets, both mounted for rotation on supports. The apparatus includes a base plate and a post mounted through a closely-sized aperture in the base plate. An arm is mounted to the post at a mounting point at one end of the arm, such that the arm is rotatable about the post with respect to the base plate. An idler sprocket is rotatably attached to the arm at a point spaced apart from the mounting point of the arm, near the opposite end, and positioned so as to be engageable with the belt or chain. Engaging pins are positioned on the arm at a point near the idler sprocket. The base plate has corresponding holes for engaging the engaging pins on the arm in a plurality of positions with respect to the base plate. The post is a shoulder bolt which is inserted into the aperture from one side of the base plate and is fastened to the arm on the opposite side of the base plate by a nut threaded onto the end of the shoulder bolt, capturing the arm between the nut and the shoulder. A spring captured between the base plate and the head of the shoulder bolt biases the bolt to slide through the aperture in the base plate, so as to engage the pins in the holes.

REFERENCES:
patent: 3738189 (1973-06-01), Chen
patent: 4489475 (1984-12-01), Strutimann et al.
patent: 4498889 (1985-02-01), Stevens et al.
patent: 4559027 (1985-12-01), Sattel
patent: 5058507 (1991-10-01), Muth

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