Motor vehicles – Special driving device – Portable track
Patent
1976-03-24
1977-07-12
Johnson, Richard J.
Motor vehicles
Special driving device
Portable track
267 32, B62M 2702
Patent
active
040348202
ABSTRACT:
Disclosed herein is a device for use in a snowmobile suspension system also disclosed herein, which device facilitates increasing the stroke of a shock absorber used in the suspension system. The snowmobile disclosed herein comprises a body having a pair of downwardly extending ski posts, each of which ski posts has associated therewith a suspension system. The suspension system comprises a ski disposed beneath the ski post, together with a leaf spring secured to the ski post for biasing the snowmobile body against substantially downward movement. The suspension system is provided with a shock absorber having a lower end, and having an upper end secured to one of the ski post and the leaf spring, and also includes a device which comprises a bell crank member having a first arm slidably engaging the leaf spring, having a second arm with an end portion secured to the lower end of the shock absorber, and also having a junction portion between the arms, which junction portion is pivotally connected to the ski for pivoting the second arm and displacing the lower end of the shock absorber toward the upper end of the shock absorber in response to a relative movement of the ski post toward the ski.
REFERENCES:
patent: 1449703 (1923-03-01), Sprague
patent: 3613812 (1971-10-01), Hetteen
patent: 3800896 (1974-04-01), Albertson
patent: 3835947 (1974-09-01), Alexander
patent: 3867991 (1975-02-01), Brandli
patent: 3930547 (1976-01-01), West
Johnson Richard J.
Outboard Marine Corporation
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