Vibrating massage roller with multiple motors

1. A massage roller assembly, comprising:

an outer roller surface that defines a central axis;

a main body portion that includes the outer roller surface and has a plurality of vibration motor recesses defined therein;

a plurality of vibration motors positioned adjacent to the outer roller surface and configured to transmit vibrations to the outer roller surface, wherein each vibration motor in the plurality of vibration motors is disposed in one of the plurality of vibration motor recesses, and wherein the vibration motors are individually controllable such that at least first and second sets of vibration motors are configured to be switched on and off separately; and

a controller configured to automatically switch on the first set when the first set is located above a horizontal plane defined relative to the main body portion, automatically switch on the second set when the second set is located above the horizontal plane, switch off the first set when the first set is below the horizontal plane, and switch off the second set when the second set is below the horizontal plane.

2. The massage roller assembly of claim 1 , further comprising an outer cover, wherein the outer cover covers the plurality of vibration motors.

3. The massage roller assembly of claim 1 , further comprising at least a first sensor configured to sense a position of a user on the outer roller surface.

4. The massage roller assembly of claim 1 , comprising a cylindrical shape.

5. The massage roller assembly of claim 1 , comprising a spherical shape.

6. The massage roller assembly of claim 1 , comprising a gyroscope configured to determine a position of the massage roller assembly, wherein the controller is configured to switch on and switch off motors among the plurality of vibration motors in response to the position determined by the gyroscope.

7. A method of using a massage roller assembly that includes an outer roller surface and a plurality of vibration motors positioned adjacent to the outer roller surface, wherein the plurality of vibration motors form at least first and second sets of vibration motors, wherein the massage roller assembly defines a circular shape, wherein the second set of vibration motors are positioned at a location circumferentially offset from the first set of vibration motors, and wherein the massage roller assembly defines a horizontal plane that remains horizontal when the massage roller assembly rolls, the method comprising the steps of:

placing the massage roller assembly on a floor at a first position;

switching on the first set of vibration motors, wherein the first set of vibration motors are located above the horizontal plane and the second set of vibration motors are located below the horizontal plane;

rolling the massage roller assembly on the floor from the first position to a second position;

switching off the first set of vibration motors when the massage roller assembly is in the second position; and

switching on the second set of vibration motors, wherein the second set of vibration motors are located above the horizontal plane and the first set of vibration motors are located below the horizontal plane.

8. The method of claim 7 , wherein the massage roller assembly includes a main body portion and an outer cover, wherein the main body portion includes a plurality of vibration motor recesses defined therein, wherein each vibration motor recess includes one of the plurality of vibration motors therein, and wherein the outer cover covers the plurality of vibration motors.

9. The method of claim 7 , wherein the massage roller assembly includes at least a first sensor configured to sense a position of a user on the outer roller surface.

10. The method of claim 7 , wherein the massage roller assembly comprises a cylindrical shape.

11. The method of claim 7 , wherein the massage roller assembly comprises a spherical shape.

12. A massage roller assembly, comprising:

a main body portion that includes an outer roller surface and defines a central axis;

a controller located in the main body portion;

a gyroscope configured to detect a position of the massage roller assembly; and

a plurality of vibration motors positioned about the central axis and configured to transmit vibrations to the outer roller surface, wherein the plurality of vibration motors includes at least first and second sets of vibration motors, the second set of vibration motors is circumferentially offset from the first set of vibration motors about the central axis, and the vibration motors are controllable such that the first and second sets of vibration motors are configured to be switched on and off separately,

wherein the controller is configured to:

switch on the first set of vibration motors when the massage roller assembly is in a first position wherein the first set of vibration motors are located on a first side of a plane defined by the massage roller assembly and the second set of vibration motors are located on a second side of the plane, the second side being opposite from the first side, wherein the angular position of the plane remains the same when the massage roller assembly rolls; and

switch on the second set of vibration motors when the massage roller assembly is in a second position wherein the second set of vibration motors are located on the first side of the plane and the first set of vibration motors are located on the second side of the plane.

13. The massage roller assembly of claim 12 , wherein the controller is configured to:

switch off the second set of vibration motors when the vibration roller assembly is in the first position; and

switch off the first set of vibration motors when the vibration roller assembly is in the second position.

14. The massage roller assembly of claim 13 , wherein the plane is a horizontal plane.

15. The massage roller assembly of claim 14 , wherein the first side is above the horizontal plane and the second side is below the horizontal plane.

16. The massage roller assembly of claim 15 , wherein the massage roller assembly is configured to roll on a flat surface between the first position and the second position.