Utility vehicle with foot-controlled mobility

• US 6,845,829 B2
• Filed: 04/04/2003
• Issued: 01/25/2005
• Est. Priority Date: 04/04/2002
• Status: Active Grant

• Current Assignee: James T Hafendorfer
• Original Assignee: James T Hafendorfer
• Inventors: Hafendorfer, James T.
• Primary Examiner(s): Morris, Lesley D.
• Assistant Examiner(s): YEAGLEY, DANIEL S
• Application Number:
  US10/407,639
• Publication Number:
  US 20030213626A1
• Time in Patent Office: 662 Days
• Field of Search: 180/6.48, 180/315, 180/317, 180/318, 180/321, 180/324, 180/334, 180/336, 180/305, 180/307, 180/308, 180/907, 180/908, 280/751, 280/755, 280/748, 56/147, 56/167, 297/423.11, 297/423, 297/DIG.4, 744/731.6, 745/12
• US Class Current: 180/6.48
• CPC Class Codes: B62D 1/02 vehicle-mounted
• CPC Class Codes: B62D 11/001 control systems B62D11/183 takes precedence

Abstract

A utility vehicle with foot-controlled mobility is provided that includes a skeletal frame structure supporting a gasoline engine which utilizes a belt drive system to drive hydraulic motors with one hydraulic motor disposed at each rear wheel. The vehicle includes four wheel and tire assemblies, substantially at each corner with the rear wheels being driven and the front wheels being formed as casters for 360° rotation to provide a zero turning radius vehicle. The user sits upright in a manner wherein the user'"'"'s legs are supported on pivotal leg support plates to allow the user to sit upright with legs directed down and away from the waist to allow the user to operate a hand-held implement. Both speed control and directional control are provided using pivotally mounted pedals with one pedal controlling each hydraulic motor. Movement of the pedals allows individual motor control to provide drive steering and speed control.

Claims

1. A utility vehicle configured for foot-controlled mobility comprising:

a frame;

an apparatus for providing motive power mounted to said frame;

at least two independently-operable drive wheels mounted to said frame for ground contact, said drive wheels being in communication with said apparatus for providing motive power for application of motive power through said ground contact for vehicle movement;

at least one ground support member mounted to said frame and spaced from said at least two independently-operable drive wheels for cooperation therewith for ground-support of said utility vehicle;

a control pedal apparatus movably mounted to said frame in operational communication with said at least two independently-operable drive wheels for controlling rotation thereof;

a seat for user-body support mounted to said frame; and

at least one user-body stabilizer mounted to said frame, and intersecting an imaginary horizontal plane disposed intermediate an imaginary horizontal plane through said seat and an imaginary horizontal plane through at least one of said control pedal apparatus.

2. A utility vehicle according to claim 1 wherein said pedal apparatus includes a first control pedal movably mounted to said frame in operational communication with a first of said at least two independently-operable drive wheels for controlling rotation thereof;

and a second control pedal movably mounted to said frame in operational communication with a second of said at least two independently-operable drive wheels for controlling rotation thereof.

3. A utility vehicle according to claim 1 wherein said apparatus for providing motive power includes a first motor in operational communication with a first of said at least two independently-operable drive wheels and a second motor in operational communication with a second of said at least two independently-operable drive wheels.

4. A utility vehicle according to claim 3 wherein said first motor and said second motor are each pump-driven hydraulic motors and said apparatus for providing motive power further includes an engine in operational communication with said hydraulic motors for pump operation therefor.

5. A utility vehicle according to claim 3 wherein said first motor and said second motor are each electric motors and said apparatus for providing motive power further includes a battery.

6. A utility vehicle according to claim 1 wherein said at least one ground support member includes at least one non-driven wheel mounted to said frame for rotation about a generally horizontal axis for ground contact rolling movement thereof.

7. A utility vehicle according to claim 6 wherein said at least one non-driven wheel is mounted to said frame for rotation about a generally vertical axis.

8. A utility vehicle according to claim 1 wherein said at least one ground support member includes two non-driven wheels mounted to said frame for rotation about generally horizontal axes for ground contact rolling movement thereof.

9. A utility vehicle according to claim 8 wherein said non-driven wheels are mounted to said frame for rotation about generally vertical axes.

10. A utility vehicle according to claim 1 wherein said at least one user-body stabilizer includes two leg support members mounted to said frame.

11. A utility vehicle according to claim 10 wherein said leg support members are pivotably mounted to said frame.

12. A utility vehicle according to claim 10 wherein said frame includes at least two locations for mounting said at least one user-body stabilizer.

13. A utility vehicle according to claim 10 wherein said first control pedal and a second control pedal are each mounted to said frame for partial rotation about respective axes for selectively controlling clockwise and counterclockwise rotational movement of a first drive wheel and a second drive wheel respectively, and wherein each said pedal includes a first control surface formed as a substantially planar platform disposed at a substantially right angle with an imaginary line extending from each said leg support member.

14. A utility vehicle according to claim 13 wherein said first control pedal and said second control pedal each include a second control surface formed therein in spaced, facing relation with said first control surface.

15. A utility vehicle according to claim 1 wherein a first pedal and said second pedal are mounted to said frame for partial rotation about respective axes for selectively controlling clockwise and counterclockwise rotational movement of a first independently-operable drive wheel and a second independently-operable drive wheel respectively.

16. A utility vehicle according to claim 15 wherein said first control pedal and said second control pedal each include a first control surface formed therein in spaced, facing relation with a second control surface.

17. A utility vehicle according to claim 1 and further comprising a user-body restraint member mounted to said frame and movable between a first position disposed in facing relation with an imaginary vertical plane extending through said seat and a second position spaced from said first position.

18. A utility vehicle according to claim 1 and further comprising an implement storage assembly mounted to said frame.

19. A utility vehicle according to claim 1 and further comprising an anti-tip assembly mounted to said frame and projecting rearwardly from said vehicle.

20. A utility vehicle according to claim 19 wherein said anti-tip assembly includes at least one anti-tip member projecting outwardly from said vehicle in a manner for ground contact responsive to said vehicle tipping rearwardly.

21. A utility vehicle according to claim 1 and further comprising an assembly for providing said vehicle with a substantially zero turning radius.

22. A utility vehicle according to claim 21 wherein said assembly for providing said vehicle with a substantially zero turning radius includes a dual pedal assembly for individually controlling rotational direction of each said independently-operable drive wheel and at least one non-driven wheel forming said ground support member and being mounted to said frame for rotation about a generally horizontal axis for ground contact rolling movement thereof and for rotation about a generally vertical axis.

23. A utility vehicle configured for foot-controlled mobility comprising:

a frame;

two independently operable drive wheels mounted to said frame;

an apparatus for providing motive power mounted to said frame including a first hydraulic motor in operational communication with a first of said two independently-operable drive wheels and a second hydraulic motor in operational communication with a second of said two independently-operable drive wheels, and an engine in operational communication with said first hydraulic motor and said second hydraulic motor for pump operation therefor;

two non-driven wheels mounted to said frame for rotation about generally horizontal axes for ground contact rolling movement thereof and for rotation about generally vertical axes for swiveling movement thereof, with said two non-driven wheels being spaced from said drive wheels for cooperation with said at least two independently-operable drive wheels for ground-support of said utility vehicle;

a first control pedal in operational communication with said first of said at least two independently-operable drive wheels with said first control pedal being mounted to said frame for partial rotation about an axis for selectively controlling clockwise and counterclockwise rotational movement of said first independently-operable drive wheel; and

a second control pedal in operational communication with said second of said at least two independently-operable drive wheels with said second control pedal being mounted to said frame for partial rotation about an axis for selectively controlling clockwise and counterclockwise rotational movement of said second independently-operable drive wheel,

a seat for user-body support mounted to said frame;

a user-body restraint member mounted to said frame and movable between a first position disposed in facing relation with an imaginary vertical plane extending through said seat and a second position spaced from said first position; and

at least one leg stabilizer member mounted to said frame, and intersecting an imaginary horizontal plane disposed intermediate an imaginary horizontal plane through said seat and an imaginary horizontal plane through at least one of said first control pedal and said second control pedal.

24. A utility vehicle according to claim 23 wherein said first control pedal and said second control pedal each includes a control surface formed as a substantially planar platform disposed at a substantially right angle with an imaginary line extending from said at least one leg support member.

25. A utility vehicle according to claim 23 wherein said first control pedal and said second control pedal each include a first control surface formed therein in spaced, facing relation with a second control surface.

26. A utility vehicle according to claim 23 and further comprising an implement storage assembly mounted to said frame.

27. A utility vehicle according to claim 23 and further comprising an anti-tip assembly mounted to said frame and projecting rearwardly from said vehicle.

28. A utility vehicle according to claim 27 wherein said anti-tip assembly includes at least one anti-tip member projecting outwardly from said vehicle in a manner for ground contact responsive to said vehicle tipping rearwardly.

29. A utility vehicle according to claim 23 and further comprising an assembly for providing said vehicle with a substantially zero turning radius.

30. A utility vehicle according to claim 29 wherein said assembly for providing said vehicle with a substantially zero turning radius includes a dual pedal assembly for individually controlling rotational direction of each said independently-operable drive wheel and said two non-driven wheels.

31. A utility vehicle configured for foot-controlled mobility comprising:

a frame;

an apparatus for providing motive power mounted to said frame;

at least two independently-operable drive wheels mounted to said frame for ground contact, said drive wheels being in communication with said apparatus for providing motive power for application of motive power through said ground contact for vehicle movement;

at least one ground support member mounted to said frame and spaced from said at least two independently-operable drive wheels for cooperation therewith for ground-support of said utility vehicle;

a seat for user-body support mounted to said frame; and

a control pedal apparatus movably mounted to said frame in operational communication with said at least two independently-operable drive wheels, said control pedal apparatus including a first control pedal in operational communication with a first drive wheel for controlling speed and direction of rotation thereof and a second control pedal in operational communication with a second drive wheel for controlling speed and direction of rotation thereof.

32. A utility vehicle according to claim 31 wherein said first control pedal and said second control pedal are pivotably mounted to said frame for bidirectional rotational movement about an axis from a neutral position, and are configured for causing rotation of each respective drive wheel in a direction so as to induce forward motion of said vehicle when moved in a first direction and for causing rotation of each respective drive wheel in a direction so as to induce rearward motion of said vehicle when said moved in a second direction.

33. A utility vehicle according to claim 32 wherein said first control pedal and said second control pedal are each configured for individually controlling respective drive wheel rotational speed, said drive wheel rotational speed being proportional to an amount of pedal displacement with respect to said neutral position.

34. A utility vehicle according to claim 32 wherein said first pedal and said second pedal each include a heel area and a toe area, and are each configured for causing rotation of a respective drive wheel commensurate with forward motion of said vehicle when said toe area is depressed and for causing rotation of a respective drive wheel commensurate with rearward motion of said vehicle when said heel area is depressed.

35. A utility vehicle according to claim 32 and further comprising at least one user-body stabilizer mounted to said frame, and intersecting an imaginary horizontal plane disposed intermediate an imaginary horizontal plane through said seat and an imaginary horizontal plane through at least one of said first control pedal and said second control pedal.