Automatic track chain tensioner

Details Automatic track chain tensioner Automatic track chain tensioner

1977-01-27

1979-04-17

Shannon, John P.

Wheel substitutes for land vehicles

Combined or convertible

305 31, B62D 5530

Patent

active

041497570

ABSTRACT:
A tensioning and recoil apparatus for the idler wheel and track of a crawler-type vehicle, such apparatus including a recoil spring and a hydraulic cylinder interposed between the spring and idler wheel. Hydraulic fluid is added to or released from the cylinder, as needed, to maintain a predetermined pressure level in the cylinder and a constant tension in the track trained around the idler and to provide a fluid damping of peak loads on the idler wheel and track during forward drive. Fluid is trapped in the cylinder when in reverse drive so that the cylinder then functions as a solid link between the recoil spring and idler wheel.

REFERENCES:
patent: 3787097 (1974-01-01), Orr
patent: 3972569 (1976-08-01), Bricknell

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