Omni-directional treadmill

• US 6,152,854 A
• Filed: 02/22/1999
• Issued: 11/28/2000
• Est. Priority Date: 08/27/1996
• Status: Expired due to Fees

• Current Assignee: David E.E. Carmein
• Original Assignee: David E.E. Carmein
• Inventors: Carmein, David E. E.
• Primary Examiner(s): Cheng, Joe H.
• Application Number:
  US09/255,162
• Time in Patent Office: 645 Days
• Field of Search: 482/1-9, 482/52, 482/54, 482/55, 482/57, 482/71, 482/72, 482/900-903, 434/247, 73/379.01, 198/370.01-370.03, 198/371.01-371.03, 198/779, 198/840, 345/418, 345/473, 345/952
• US Class Current: 482/4
• CPC Class Codes: A61H 3/008 Using suspension devices for supporting the body in an upright walking or standing position, e.g. harnesses drawing-out devices A61H1/0218
• CPC Class Codes: A63B 2022/0271 omnidirectional
• CPC Class Codes: A63B 2024/0093 the load of the exercise apparatus being controlled by performance parameters, e.g. distance or speed
• CPC Class Codes: A63B 22/02 with movable endless bands , e.g. treadmills other training appliances for running on the spot A63B69/0028
• CPC Class Codes: A63B 22/0242 with speed variation
• CPC Class Codes: A63B 22/025 electrically, e.g. D.C. motors with variable speed control
• CPC Class Codes: A63B 22/0285 Physical characteristics of the belt, e.g. material, surface, indicia
• CPC Class Codes: A63B 2220/13 Relative positions
• CPC Class Codes: A63G 31/16 creating illusions of travel
• CPC Class Codes: B65G 17/345 the surfaces being equipped with a conveyor
• CPC Class Codes: B65G 2201/02 Articles
• CPC Class Codes: B65G 2207/18 Crossing conveyors
• CPC Class Codes: G06F 2203/012 Walk-in-place systems for allowing a user to walk in a virtual environment while constraining him to a given position in the physical environment
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G09B 9/00 Simulators for teaching or training purposes for the use of weapons F41; computing aspects G06; protocols for games, networked simulations or virtual reality H04L67/131
• CPC Class Codes: Y10S 482/902 Employing specific graphic or video display

Abstract

A treadmill (1) having a track assembly that allows a user (3) to walk or run in any arbitrary direction. A movable user support has a plurality of rotatable members that rotate about axes normal to the direction of movement of the user support (2). Separate power drive mechanism (7) (8) concurrently move the user support (2) and rotate the members to omni-directional user movement. A control (4) for the power driven mechanism (7) (8) is responsive to the directional orientation of the user on the user support (2) to cause the user support (2) to operate in the direction of the orientation of the user (3).

Claims

1. An apparatus for allowing a user to walk or run in any arbitrary direction having a frame, a track assembly mounted on the frame, the track assembly having a user active surface means for supporting the user walking or running thereon characterized by the user active surface means having a plurality of side-by-side endless first belts, sleeve means for accommodating opposite ends of the first belts whereby the first belts can be moved around the sleeve means, support means for each first belt located between the sleeve means, means for pivotally connecting adjacent support means to provide an endless second belt, roller means mounted on the frame supporting opposite ends of the second belt, first drive means for rotating at least one of the roller means to move the second belt in a first direction, and second drive means for moving the second belt in a second direction whereby the combined movements of the first and second belts results in omni-directional user movement of the active surface means, and controls means responsive to directional orientation of the user on the user active surface means to selectively control the operation of the first and second drive means thereby control the directional user movement to conform with the orientation of the user on the user active surface.

2. The apparatus of claim 1, wherein the support means for each first belt comprises an inverted U-shaped member having a generally flat top surface for supporting the upper run of the first belt, side means including hinge means articulately coupling adjacent portions of the inverted U-shaped member.

3. The apparatus of claim 1, including idler rollers mounted on the support means engageable with the bottom runs with the first belts, said second drive means being engageable with the second belts to hold the bottom run of the first belts in engagement with the idler rollers.

4. The apparatus of claim 1, wherein the second drive means include vector thrust wheels engageable with the second belts, and means for rotating said wheels thereby moving the second belts in the second direction.

5. The apparatus of claim 1, wherein the control means includes a closed loop position control to maintain position of the user toward the center of the user active surface means in response to user traversal of the user active surface means.

6. The apparatus of claim 1, wherein the control means includes adapting means adapted to be coupled with the user to actively track the motion of the user and to assist the user in maintaining the balance.

7. The apparatus of claim 6, wherein the adapting means adapted to be coupled with the user includes a cuff connectable to the user.

8. The apparatus of claim 6, wherein the adapting means adapted to be coupled with the user includes handle means adapted to be grasped by the user to assist the user in maintaining the balance.

9. The apparatus of claim 1, wherein the control means includes virtual reality means responsive to directional orientation of the user on the user active surface means, said virtual reality means having a visual display for displaying visual images, a display control means for projection of the visual images, speaker means for generating audible sounds, a microphone for the user, means for sensing the position of the user on the user active surface means, and means for connecting the visual display, display control means and speaker means for generating images and sounds, respectively.

10. The apparatus of claim 9, wherein said virtual reality means further includes interactive solids for providing the user with haptic feedback.

11. The apparatus of claim 1, wherein the control means includes force feedback means operable to apply an external force to the user.

12. A track assembly for an omni-directional treadmill for allowing a user to walk or run in any arbitrary direction comprising:

user active surface means for supporting the user walking or running thereon, said user active surface means having a plurality of side-by-side endless first belts providing an endless first belt assembly, sleeve means for accommodating opposite ends of the first belts whereby the first belts can be moved in a transverse direction around the sleeve means, support means for each first belt located between the sleeve means, means for pivotally connecting adjacent support means to provide an endless second belt assembly, roller means supporting opposite ends of the second belt assembly for movement in a longitudinal direction, first drive means for moving the second belt assembly in the longitudinal direction, second drive means for moving the first belt assembly in the transverse direction whereby the combined movements of the first belt assembly and second belt assembly results in omni-directional user movement of the active surface means, and control means responsive to direction orientation of the user on the user active surface means to selectively control the operation of the first and second drive means thereby control the directional user movement to conform with the orientation of the user on the user active surface means.

13. The track assembly of claim 12, wherein the support means for each first belt comprises an inverted U-shaped member having a generally flat top surface for supporting the upper run of the first belt, side means including hinge means articulately coupling adjacent portions of the inverted U-shaped member.

14. The track assembly of claim 12, including idler rollers mounted on the support means engageable with the bottom runs with the first belts, said second drive means being engageable with the second belts to hold the bottom run of the first belts in engagement with the idler rollers.

15. The track assembly of claim 12, wherein the second drive means include vector thrust wheels engageable with the second belts, and means for rotating said wheels thereby moving the second belts in the second direction.

16. The track assembly of claim 12, wherein the control means includes a closed loop position control to maintain position of the user toward the center of the user active surface means in response to user traversal of the user active surface means.

17. The track assembly of claim 12, wherein the control means includes adapting means adapted to be coupled with the user to actively track the motion of the user and to assist the user in maintaining the balance.

18. The track assembly of claim 17, wherein the adapting means adapted to be coupled with the user includes a cuff connectable to the user.

19. The track assembly of claim 17, wherein the adapting means adapted to be coupled with the user includes handle means adapted to be grasped by the user to assist the user in maintaining the balance.

20. The track assembly of claim 12, wherein the control means includes a virtual reality means responsive to directional orientation of the user on the user active surface means, said virtual reality means having a visual display for displaying visual images, a display control means for projection of the visual images, speaker means for generating audible sounds, a microphone for the user, means for sensing the position of the user on the user active surface means, and means for connecting the visual display, display control means and speaker means for generating images and sounds, respectively.

21. The track assembly of claim 20, wherein said virtual reality means further includes interactive solids for providing the user with haptic feedback.

22. The track assembly of claim 12 wherein the control means includes force feedback means operable to apply an external force to the user.

23. An apparatus for allowing a user to walk or run in any arbitrary direction comprising:

a support, a user active surface mounted on the support for supporting the user walking or running thereon, said user active surface including a plurality of transverse endless loop members, first means mounting each loop members for selective movement in opposite transverse directions, first drive means for transversely moving the loop members, second means for connecting adjacent first means to provide an endless loop assembly adapted to move in a longitudinal direction, second drive means cooperating with the endless loop assembly to move the endless loop assembly in a longitudinal direction whereby the combined movements of the transverse endless loop members and the endless loop assembly results in omni-directional user movement, and control means responsive to a directional orientation of the user on the user active surface to selectively control the operation of the first and second drive means thereby controlling the omni-directional user movement to conform with the directional orientation of the user on the user active surface.

24. The apparatus of claim 23 wherein the endless loop members are a plurality of side-by-side endless belts having upper runs providing the user active surface.

25. The apparatus of claim 23 wherein the first means mounting the loop members comprise cylindrical members, said loop members being located around said cylindrical members.

26. The apparatus of claim 25 wherein the second means comprises flexible members connecting adjacent cylindrical members providing said endless loop assembly.

27. The apparatus of claim 23 wherein the second drive means includes cylindrical members, and power means for rotating at least one of the cylindrical members, said endless loop assembly being located around said cylindrical members whereby rotation of the cylinderical members results in longitudinal movement of the endless loop assembly.

28. The apparatus of claim 27, wherein the power means is a motor driveably connected to at least one cylindrical member.

29. The apparatus of claim 23, wherein the control means includes a closed loop position control to maintain the position of the user toward the center of the user active surface in response to user traversal of the user active surface.

30. An apparatus of claim 23, wherein the control means includes adapting means adapted to be coupled with the user to actively track the motion of the user and to assist the user in maintaining balance.

31. An apparatus of claim 30, wherein the adapting means adapted to be coupled with the user includes a cuff connectable to the user.

32. An apparatus of claim 23, wherein the control means further includes virtual reality means responsive to the directional orientation of the user on the user active surface, the virtual reality means comprising:

a head-mounted visual display for displaying visual images;

a display control means for projecting the visual images;

speaker means for generating sounds;

a microphone for the user;

means for sensing the position of the user on the user active surface; and

means for connecting the head-mounted visual display, display control means and speaker means.

33. An apparatus of claim 32, wherein the virtual reality means further includes interactive solids for providing the user with haptic feedback.

34. A method for allowing a user to walk or run in any arbitrary direction on a user active surface comprising:

providing a user active surface with a plurality of endless loop members, selectively moving the loop members in a first direction, operatively connecting adjacent endless loop members to provide an endless loop assembly, selectively moving the endless loop assembly in a second direction normal to the first direction whereby the combined movements of the endless loop members and endless loop assembly results in omni-directional user movement, and

controlling the movements of the endless loop members and endless loop assembly responsive to a directional orientation of the user on the user active surface thereby controlling the omni-directional user movement to conform with the directional orientation of the user on the user active surface.

35. The method of claim 34, wherein said user active surface is provided with upper runs of side-by-side endless belts, and moving said belts in the first direction.

36. The method of claim 35, wherein the endless belts are moved in the first direction in an endless loop and the endless loop assembly is moved in an endless loop in the second direction.