Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1980-10-06
1984-02-14
Brust, Joseph Paul
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
B62B 1704, B62M 2702
Patent
active
044310781
ABSTRACT:
A snowmobile includes a pair of skis connected to the snowmobile frame by a forward suspension including a pair of telescopic struts which are biased to normally extended positions and are connected to a stabilizer member including a transverse torsion bar. A drive track of the snowmobile is suspended from the frame by a rear suspension, including a link pivotally connected between the frame, and a pair of slide rails and biased downwardly by a pair of torsion springs having respective ends engaged with a pivotally mounted spring end retainer which is connected to the torsion bar of the forward suspension by a pair of motion transfer links which act to "soften" the rear suspension in response to upward telescopic movement of one or the other or both of the telescopic struts.
REFERENCES:
patent: 3140752 (1964-07-01), Feu
patent: 3148743 (1964-09-01), Jarvi et al.
patent: 3664446 (1972-05-01), Burtis et al.
patent: 3835947 (1974-09-01), Alexander, Jr.
patent: 3913692 (1975-10-01), Lohr et al.
patent: 4222453 (1980-09-01), Fixson et al.
patent: 4342372 (1982-08-01), Hayes
Ebert Russell L.
Hayes Stanley G.
Brust Joseph Paul
Deere & Company
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