Tracked all-terrain vehicle

Patent metadata

Field	Value
Publication number	US-12448064-B2
Application number	US-202117372387-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Mar 25, 2013
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A tracked ATV includes a frame, a track coupled to the frame, and a power source supported by the frame and drivingly coupled to the track. The tracked ATV further includes a steering and drive assembly, which has a first hydraulic pump coupled to the tracks for large radius turns. The steering and drive assembly also has a second hydraulic pump coupled to the tracks for small radius turns.

First claim

The invention claimed is:

1. A vehicle comprising:
a plurality of ground engaging members, the plurality of ground engaging members including a track having a lower portion configured to engage a ground surface, an upper portion vertically spaced from the lower portion, a forward portion extending between the lower portion and the upper portion, an ultimate forward longitudinal end and an ultimate rearward longitudinal end;
a frame supported by the plurality of ground engaging members;
a suspension assembly positioned within an interior of the track;
a seat for an operator supported by the frame, the seat having a rearward end between the ultimate forward longitudinal end and the ultimate rearward longitudinal end of the track;
a steering input configured to rotate, the steering input supported by the frame and positioned forward of and laterally aligned with the seat;
a drive unit rotatable about a drive unit rotational axis and extending within the interior of the track and profiled to engage only the upper portion and the forward portion of the track;
a plurality of batteries supported by the plurality of ground engaging members, the plurality of batteries including a first battery positioned:
longitudinally rearward of the ultimate forward longitudinal end of the track,
longitudinally forward of the ultimate rearward longitudinal end of the track, and
outside of the interior of the track; and
an electric motor rotatable about an electric motor rotational axis and operatively coupled to plurality of batteries and operatively coupled to the drive unit to power movement of the track, the electric motor positioned longitudinally forward of the first battery of the plurality of batteries and the electric motor rotational axis of the electric motor is longitudinally offset relative to the drive unit rotational axis of the drive unit.

2. The vehicle of claim 1 , further comprising a gear reduction box operatively coupled to the electric motor and operatively coupled to the drive unit, the electric motor driving the drive unit through the gear reduction box.

3. The vehicle of claim 1 , wherein the first battery is longitudinally offset relative to the drive unit.

4. The vehicle of claim 1 , wherein the track has a lateral width and the electric motor has a first end positioned laterally offset from the track.

5. The vehicle of claim 1 , wherein the plurality of batteries includes a second battery positioned:
longitudinally rearward of the ultimate forward longitudinal end of the track,
longitudinally forward of the ultimate rearward longitudinal end of the track,
longitudinally rearward of the electric motor, and
outside of the interior of the track.

6. The vehicle of claim 5 , wherein the second battery is longitudinally offset relative to the first battery.

7. The vehicle of claim 6 , wherein the second battery is further laterally offset relative to the first battery.

8. The vehicle of claim 5 , wherein the second battery is laterally offset relative to the first battery.

9. The vehicle of claim 1 , wherein each of the plurality of batteries is positioned:
rearward of the ultimate forward longitudinal end of the track,
forward of the ultimate rearward longitudinal end of the track, and outside of the interior of the track.

10. The vehicle of claim 1 , wherein the drive unit is drivable by the electric motor in both a first direction and a second direction, the second direction being opposite the first direction.

11. The vehicle of claim 1 , wherein the plurality of ground engagement members includes a second track.

12. The vehicle of claim 11 , wherein the second track is longitudinally aligned with the track and laterally offset from the track.

13. The vehicle of claim 12 , further comprising a second electric motor operatively coupled to the plurality of batteries, the second electric motor operatively coupled to the second track to power movement of the second track.

14. The vehicle of claim 1 , wherein the frame includes a protective portion extending below the first battery of the plurality of batteries and separating the first battery of the plurality of batteries from the track.

15. The vehicle of claim 14 , wherein the protective portion is a tub and the first battery of the plurality of batteries is received within the tub.

16. The vehicle of claim 14 , wherein the protective portion has a generally U-shaped profile in a lateral direction.

17. The vehicle of claim 16 , wherein protective portion includes a front wall positioned longitudinally forward of the drive unit.

18. The vehicle of claim 1 , wherein the suspension assembly includes
a plurality of laterally extending shafts positioned within the interior of the track;
a plurality of control arms positioned within the interior of the track and moveably coupled to the plurality of laterally extending shafts; and
a plurality of carrier rollers positioned within the interior of the track, the plurality of carrier rollers being coupled to the plurality of shafts and plurality of control arms.

19. The vehicle of claim 1 , wherein the suspension assembly includes
a longitudinally extending carriage positioned within the interior of the track;
a plurality of control arms positioned within the interior of the track and moveable relative to the carriage;
a shock absorber positioned within the interior of the track and moveably coupled to a first control arm of the plurality of control arms; and
a plurality of carrier rollers positioned within the interior of the track, wherein the carriage, the plurality of control arms, and the shock absorber cooperating to position the plurality of carrier rollers.

20. The vehicle of claim 1 , further comprising a radiator longitudinally offset from the first battery.

21. The vehicle of claim 1 , wherein the track is propelled only by the electric motor.

22. A vehicle comprising:
a plurality of ground engaging members, the plurality of ground engaging members including a track having a lower portion configured to engage a ground surface, an upper portion vertically spaced from the lower portion, a forward portion extending between the lower portion and the upper portion, an ultimate forward longitudinal end and an ultimate rearward longitudinal end;
a frame supported by the plurality of ground engaging members;
a suspension assembly positioned within an interior of the track;
a seat for an operator supported by the frame, the seat having a rearward end between the ultimate forward longitudinal end and the ultimate rearward longitudinal end of the track;
a steering input configured to rotate, the steering input supported by the frame and positioned forward of and laterally aligned with the seat;
a drive unit rotatable about a drive unit rotational axis and extending within the interior of the track and profiled to engage only the upper portion and the forward portion of the track;
a plurality of batteries supported by the plurality of ground engaging members, the plurality of batteries including a first battery positioned outside of the interior of the track;
an inverter operably coupled to the batteries, the inverter positioned:
longitudinally rearward of the ultimate forward longitudinal end of the track,
longitudinally forward of the ultimate rearward longitudinal end of the track, and
outside of the interior of the track; and

an electric motor rotatable about an electric motor rotational axis and operatively coupled to plurality of batt

Assignees

• Polaris Inc

Inventors

• Kohler Beat R
• Borud Eric J

Classifications

• B60G2300/32

  Track vehicles · CPC title

• B62D55/244

  Moulded in one piece, with either smooth surfaces or surfaces having projections, e.g. incorporating reinforcing elements · CPC title

• B62D11/18

  the additional power supply being supplied hydraulically · CPC title

• B62D55/112

  with fluid springs, e.g. hydraulic pneumatic · CPC title

• B62D21/186

  for building site vehicles or multi-purpose tractors (tracked vehicles B62D55/10; tractors in general B62D49/00; building site vehicles in general E02F; lift-trucks B66F) · CPC title