Suspension and drive mechanism for a multi-surface vehicle

Details Suspension and drive mechanism for a multi-surface vehicle Suspension and drive mechanism for a multi-surface vehicle

2007-03-13

2007-03-13

Stormer, Russell D. (Department: 3617)

Wheel substitutes for land vehicles

Tracks or treads

With guide means for interfitting with sprocket wheel or roller

C305S115000, C305S199000

Reexamination Certificate

active

09761382

ABSTRACT:
A tracked vehicle produces a pressure no more than 3 psi on the ground by increasing the number of contact points on the inner surface of the track. The stiffness of the track is also selected to minimize bowing between the idler wheels or rollers. The track is therefore kept substantially straight between the rollers to increase the efficiency associated with transferring power to track. The drive sprocket is positioned above the ground so as to eliminate complexity in the design and yet effectively transmit power to the tracks. Positioning the drive sprocket above ground also prevents derailing of the track. The track is also held in a constant state of tension on the driver sprocket and the roller. This too prevents derailment. The undercarriage of the vehicle includes torsion axles and sealed bearings to provide for a lower maintenance track. Components associated with the undercarriage do not require constant greasing and cleaning of the idler wheels. The track is beveled so that it does not rip up surfaces. The drive sprocket is provided with roller sleeves that accommodate the changes in the pitch line of an elastomeric flat track. The sprocket does not “scrub” the areas between the driving lugs. The drive sprocket includes a pair of scrapers and a pair of conical shields which provide self cleaning and which remove debris from the sprocket area.

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ASV, “POSI-Track, Model MD 70, Model MD 70 Turbo, Operator and Service Manual”, All Season Vehicles, Inc., P.O. Box 5160, 840 Lily Lane, Grand Parids, MN 55744, ASV: Part #0400-819, 1-41, (Oct. 1993).
ASV, “POSI-Track, Model MD 70, Model MD 70 Turbo, Parts Manual”, All Season Vehicles, Inc. P.O. Box 5160, 840 Lily Lane, Grand Rapids, MN 55744, ASV, Part #0401-172, 39, and A1-A27, (Oct. 1993).

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