Motor vehicles – Special driving device – Portable track
Patent
1974-12-05
1976-01-13
Song, Robert R.
Motor vehicles
Special driving device
Portable track
280 25, B62B 1704
Patent
active
039318621
ABSTRACT:
A suspension and steering assembly for a ski of a snowmobile includes a coil spring and shock absorbing means including a shock absorbing piston and rod connected at one end thereto. The shock absorbing means and coil spring are arranged generally parallel with each other and telescoping strut members connect the ski to the snowmobile. A first strut member has a bottom end suitable for connection with the ski and a second strut member is slidingly connected to the first strut member and adapted to telescopically receive the latter member therein. Means are provided to permit the second strut member to rotate about a longitudinal axis thereof in order to steer the ski. The shock absorbing means is disposed within the strut members and one end of the coil spring resiliently supports the first strut member in such a manner that the first strut member is biased towards a position out of the second strut member. In the preferred embodiment, the shock absorbing means and coil spring are coaxial and the rod extends along the centre axis of the coil spring. Also means are provided for preventing relative rotation between the first and second strut members and for rotatably mounting the second strut member in the body of the snowmobile. The other end of the rod and the other end of the coil spring are rigidly connected to and are supported by the second strut member.
REFERENCES:
patent: 2358817 (1944-09-01), Meehan
patent: 3525411 (1970-08-01), Hagen
patent: 3525412 (1970-08-01), Erickson
patent: 3596726 (1971-08-01), Takada
Bombarider Limited
Song Robert R.
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