All-terrain vehicle and suspension system therefor

1. An all-terrain vehicle for enabling invalids or handicapped individuals to be self transportable over ground or an ice surface, comprising:

a. a longitudinally elongated under frame carried between two endless track mechanisms, each of said track mechanisms having an endless belt about the same and pivotally mounted idler wheels and a rear drive sprocket in driving engagement with the belt, each said endless track mechanism covered by an enclosed fender, each said endless track mechanism being capable of being adjusted by an adjustment mechanism;

b. a framed open space located between the two endless track mechanisms;

c. a hydraulic drive means mounted on the vehicle, said hydraulic drive means including hydraulic motors coupled to said drive sprockets, each motor supported by a motor mount assembly attached to the under frame;

d. an internal combustion engine mounted on the vehicle and coupled to the hydraulic drive means for powering the vehicle; and

e. a hydraulic drive control means mounted on the vehicle for initiating and controlling forward, reverse, and turning movements of the vehicle over said ground and ice surfaces using hand levers;

f. an auxiliary hydraulic pump;

g. a suspension system associated with f. for lifting the frame of a. and the components b. through f. and any attachments that reside on the vehicle, simultaneously from ground level to any desired operating level and lowering the same simultaneously to any desired level from the operating level to the ground level, all such movement being controlled by the hand levers.

2. The all-terrain vehicle of claim 1 further comprising a hydraulic fluid tank mounted on the vehicle.

3. The all-terrain vehicle of claim 1 further comprising a fuel tank for the internal combustion engine mounted on the vehicle.

4. The all-terrain vehicle as claimed in claim 1 wherein, in addition, there is mounted on the vehicle a snow blade.

5. The all-terrain vehicle as claimed in claim 1 wherein, in addition, there is mounted on the vehicle a snow blower.

6. The all-terrain vehicle as claimed in claim 1 wherein, in addition, there is mounted on the vehicle an ice auger.

7. The all-terrain vehicle as claimed in claim 1 wherein, in addition, there is mounted on the vehicle, a closable cab.

8. The all-terrain vehicle as claimed in claim 1 wherein, in addition, there is a chair for an occupant provided in the open space.

9. The all-terrain vehicle as claimed in claim 8 wherein the chair is adjustable.

10. The all-terrain vehicle as claimed in claim 9 wherein the chair is adjustable in a vertical line.

11. The all-terrain vehicle as claimed in claim 10 wherein, in addition, the chair is adjustable in a forward and backward motion.

12. The all-terrain vehicle as claimed in claim 1 wherein there is, in addition, a wheel chair located in the open space.

13. A drivable suspension system for an all-terrain vehicle for lifting and lowering:

a. a longitudinally elongated under frame carried between two endless track mechanisms;

b. a framed open space located between the two endless track mechanisms;

c. a hydraulic drive means, said hydraulic drive means including hydraulic motors coupled to drive sprockets, each motor supported by a motor mount assembly attached to the under frame;

d. an internal combustion engine coupled to the hydraulic drive means; and

e. an auxiliary hydraulic pump;

f. a hydraulic drive control means for initiating and controlling forward, reverse, and turning movements of the vehicle over ground and ice surfaces, said suspension system being capable of lifting the frame of a. and the components b. through f. simultaneously from ground level to any desired operating level and lowering the same simultaneously to any desired level from the operating level to the ground level, all such movement being controlled by hand levers.

14. The suspension system as claimed in claim 13 which is hydraulically driven.