Multi-mode three wheeled toy vehicle

• US 8,025,551 B2
• Filed: 09/18/2007
• Issued: 09/27/2011
• Est. Priority Date: 09/20/2006
• Status: Expired due to Fees

• Current Assignee: Mattel Incorporated
• Original Assignee: Mattel Incorporated
• Inventors: Ngai, Tin Hung, Wong, Chun Wing, Mayer, Mark S., Torres, Ronald L., Hardouin, Christopher J.
• Primary Examiner(s): Kim; Gene
• Assistant Examiner(s): YOUNG, SCOTT E
• Application Number:
  US11/857,026
• Publication Number:
  US 20080220692A1
• Time in Patent Office: 1,470 Days
• Field of Search: 446/431, 446/436, 446/437, 446/440, 446/457, 446/470, 446/435, 446/443, 446/438, 446/454, 446/465, 446/448, 446/469, 180/212
• US Class Current: 446/431
• CPC Class Codes: A63H 17/02 convertible into other forms under the action of impact or shock, e.g. arrangements for imitating accidents
• CPC Class Codes: A63H 17/18 Tricycles, e.g. with moving figures
• CPC Class Codes: A63H 17/262 Chassis; Wheel mountings; Wheels; Axles; Suspensions; Fitting body portions to chassis
• CPC Class Codes: A63H 33/003 Convertible toys, e.g. robots convertible into rockets or vehicles convertible into planes

Abstract

A toy vehicle has first, second and third wheels for movement over a surface. Each of the first, second and third wheels has a respective first, second and third axis of rotation that lies between the remaining two other axes of rotation such that the three axes of rotation are mutually adjoining. Each of the three axes of rotation crosses over the other two axes of rotation such that an angle is formed between each adjoining crossing pair of the axes of rotation where each angle is other than a multiple of 90 degrees. Each wheel is individually powered so that the toy vehicle can translate in any horizontal direction regardless of its facing direction. Two of the wheels can be realigned so their axes of rotation are collinear for conventional movement.

Claims

1. A three wheeled toy vehicle comprising:

a chassis;

first, second and third wheels supported for rotation from the chassis and supporting the chassis for movement on a surface, the first wheel being operably and pivotably connected to the chassis by a first leg, the first leg being pivotable toward and away from the second and third wheels, each of the first, second and third wheels having a respective first, second and third axis of rotation, each of the first, second and third axes of rotation lying between the remaining two other axes of rotation such that the three axes of rotation are mutually adjoining and each of the three axes of rotation crosses over the other two axes of rotation such that an angle is formed between each adjoining crossing pair of the axes of rotation and each adjoining pair of the first, second and third wheels, and the angle formed between each adjoining pair of axes of rotation is other than multiples of about 90 degrees;

at least a separate motor operably connected with each separate one of the first, second and third wheels to drive each separate wheel independently about its axis of rotation; and

a microprocessor operably connected with at least all three of the separate motors to control power supplied to each of the three separate motors, and at least two different sets of duty cycle ratios used by the microprocessor to control power supplied to the three separate motors, at least one set including non-zero, duty cycle ratios for only the two separate motors operably connected with the first and second wheels, and at least another set including non-zero duty cycle ratios for all three of the separate motors to propel the toy vehicle holonomically in any translational direction across a support surface.

2. The toy vehicle of claim 1, wherein each of the angles is greater than 90 degrees and less than 180 degrees.

3. The toy vehicle of claim 2, wherein each of the angles is approximately 120 degrees.

4. The toy vehicle of claim 1, wherein the second wheel is operably and pivotably connected to the chassis by a second leg, the second leg being pivotable toward and away from the first and third wheels.

5. The toy vehicle of claim 4, wherein at least each of the first and second legs are positionable in at least two different orientations with respect to the chassis and the third wheel so as to change the angle between each adjoining pair of wheels.

6. The toy vehicle of claim 5 wherein the at least one motor operably connected with at least one of the first and second wheels is reversible so as to rotate the at least one wheel about its axis of rotation.

7. The toy vehicle of claim 5 further comprising at least one motor operably connected with the first and second wheels so as to reorient the first and second wheels with respect to the chassis and the third wheel and change the angle between each adjoining pair of wheels.

8. The toy vehicle of claim 5 wherein the at least one motor operably connected with the third wheel is reversible so as to rotate the third wheel about its axis of rotation.

9. The toy vehicle of claim 1 wherein a first one of the separate motors is supported on the first leg drivingly connected with the first wheel to rotate the first wheel around the first axis.

10. The toy vehicle of claim 1 further comprising a transformation motor drivingly connected to at least the first leg so as to reorient the first leg and the first wheel with respect to the chassis and the second and third wheels.

11. The toy vehicle of claim 1, wherein each of the first and second legs is repositionable so as to extend away from one another and form an angle of about 180 degrees with each other.

12. The toy vehicle of claim 1 wherein each of the two sets includes duty cycle ratios that provide proportional speed control of the vehicle.

13. The toy vehicle of claim 1 wherein at least one of the at least two sets includes duty cycle ratios as set forth in one of the Tables 1 and 2.

14. A three wheeled toy vehicle comprising:

a chassis having a front end and an opposing rear end;

three independently operated drive motors, and

a rear leg and two front legs each extending from the chassis, the two front legs being pivotably attached to the chassis such that the angle between the two front legs is variable, each leg including a wheel with a central axis of rotation generally parallel in plan view to the leg from which the wheel assembly is attached, each wheel being driven by a separate one of the drive motors, the toy vehicle having only three of the wheels, each wheel being supported by a different one of the two front legs and the rear leg, wherein the central axis of rotation of each wheel is non-adjustably fixed with respect to the leg supporting the wheel and wherein each of the two front legs is pivotably attached to the chassis so as to pivot about a separate axis generally perpendicular to a plane supporting the toy vehicle on the three wheels.

15. The toy vehicle of claim 14, wherein each wheel comprises an assembly including a plurality of rollers that collectively define an outer diameter of the assembly and the wheel and that are each freely rotatable about an axis that is generally perpendicular to a central axis of rotation of the wheel and the assembly.

16. The toy vehicle of claim 14, wherein the motors are controlled by a remote control, the remote control having a control knob, the control knob having a central axis and being twistable about the central axis and translatable for respectively turning and translating the toy vehicle separately and in combination.

17. The toy vehicle of claim 16, wherein the remote control has at least one button for activating a preset motion of the toy vehicle.

18. The toy vehicle of claim 14, wherein the chassis includes a mode motor operably connected with the two front legs so as to pivot the two front legs between an inline position and an alternate position, the two front legs being generally parallel in the inline position and the two front legs spaced generally 120 degrees apart in the alternate position.

19. The toy vehicle of claim 18, wherein only the wheels of the two front legs are operated by their respective motor in the inline position.

20. The toy vehicle of claim 19, wherein the chassis includes a face plate pivotably attached to the chassis, the face plate pivoting from a closed position when the two front legs are in the inline position to an open position when the two front legs are in the alternate position.

21. The toy vehicle of claim 20 further comprising a disc tosser, the disc tosser being exposed when the face plate is in the open position, the disc tosser being capable of firing discs from the chassis.

22. The toy vehicle of claim 20, wherein the chassis includes at least one light, the at least one light is exposed when the face plate is in the open position.

23. A three wheeled toy vehicle comprising:

a chassis having a front end and an opposing rear end;

three independently operated drive motors, and

a rear leg and two front legs each extending from the chassis, the two front legs being pivotably attached to the chassis such that the angle between the two front legs is variable, each leg including a wheel with an axis of rotation generally parallel in plan view to the leg from which the wheel assembly is attached, each wheel being driven by a separate one of the drive motors,

wherein the two front legs are left and right front legs; and

a microprocessor operably connected with at least the three drive motors, and at least two different sets of duty cycle ratios used by the microprocessor to control power supplied to the three drive motors, at least one set including duty cycle ratios for only two of the three drive motors operably connected with each separate one of the wheel assemblies of the left and right front legs, and at least another set including duty cycle ratios for all three of the separate drive motors to propel the vehicle holonomically in any translational direction across a support surface.

24. The toy vehicle of claim 23 wherein each of the two sets includes duty cycle ratios that provide proportional speed control of the vehicle.

25. The toy vehicle of claim 23 wherein at least one of the at least two sets includes duty cycle ratios as set forth in one of the Tables 1 and 2.