Variable leverage recoil mechanism

Details Variable leverage recoil mechanism Variable leverage recoil mechanism

1986-05-02

1987-03-17

Scherbel, David A.

Wheel substitutes for land vehicles

With interposed friction drive belt

305 32, B62D 5510, B62D 5530

Patent

active

046502602

ABSTRACT:
Recoil spring mechanisms are useful, for example, in relieving excessive tension in the track of track-type vehicles. Because the idler wheels recoil in a one-to-one relationship against a recoil spring, the tension in the track still increases drastically from when recoil first starts to full recoil. The subject variable leverage recoil mechanism has the idler wheel mounting bracket and first and second links arranged such that equal increments of movement of the idler wheel from a normal operating position toward a recoiled position results in progressively decreasing increments of compression of the recoil spring. This results in the idler wheel having a progressively increasing mechanical advantage over the recoil spring when the idler wheel move toward a recoiled position.

REFERENCES:
patent: 2017729 (1935-10-01), Panzegrau et al.
patent: 2326486 (1943-08-01), Norelius
patent: 2719062 (1955-09-01), Arps
patent: 3343889 (1967-09-01), Bexten
patent: 3899218 (1975-08-01), Blomstrom
Service Manual on Allis-Chalmers H.D. 21 Tractor, dated Jun. 1959, pp. 352-353.

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