Motion device for children

1. A children's motion device comprising:

a frame comprising:

a base portion configured to rest on a support surface; and

at least one non-cantilevered support arm rotatable connected to the base portion at a rotation point such that the support arm rotates about a substantially upright axis of rotation that is spaced from respective ends of the at least one support arm; and

a child support operatively connected to the support arm such that a portion of the child support is suspended above the rotation point and such that the child support is configured for oscillating about the substantially upright axis of rotation with the support arm;

wherein at least a portion of the child support is configured for supporting the head of a child positioned in the child support, and wherein the child support is suspended above the rotation point such that, as the child support oscillates about the axis of rotation, the portion of the child support configured for supporting the child's head remains substantially aligned with the axis of rotation.

2. The children's motion device of claim 1 , wherein the axis of rotation is offset from a vertical direction perpendicular to the support surface.

3. The children's motion device of claim 2 , wherein the axis of rotation is offset between 5 and 25 degrees from the vertical direction.

4. The children's motion device of claim 1 , wherein the angle of the child support with respect to the axis of rotation can be selectively adjusted by a user.

5. The children's motion device of claim 1 , further comprising a drive system configured to oscillate the support arm and child support about the axis of rotation such that the amplitude of the child support's oscillating motion remains substantially constant.

6. The children's motion device of claim 5 , wherein the drive system is an electromagnetic drive system comprising:

a first magnetic component operatively connected to the frame;

a second magnetic component operatively connected to the child support, wherein at least one of the first and second magnetic components comprises an electromagnet;

a motion sensor configured to generate a signal indicative of an amplitude of the child support's motion; and

a control circuit configured to:

receive a signal from the motion sensor;

compare the signal from the motion sensor with a value indicative of a goal amplitude for the child support; and

generate an electrical signal based on the comparison that causes electric current to be supplied to the electromagnet thereby generating a magnetic force between the first magnetic component and second magnetic component that causes the child support to oscillate with an amplitude nearer to the goal amplitude.

7. The children's motion device of claim 6 ,

wherein the second magnetic component is connected to the support arm.

8. The children's motion device of claim 6 , wherein the motion sensor comprises an infrared sensor and a reflector, wherein one of the infrared sensor and reflector is operatively connected to, and configured to oscillate with, the child support, and wherein the other of the infrared sensor and reflector is operatively connected to the frame.

9. The children's motion device of claim 6 , further comprising one or more user controls configured to enable a user to select from two or more predefined amplitude settings; and

wherein the control circuit is further configured for defining an amplitude setting selected by the user as the goal amplitude.

10. The children's motion device of claim 1 , wherein the child support comprises a support frame and a fabric cover suspended from the support frame.

11. The children's motion device of claim 1 , wherein the child support comprises a child seat having a substantially rigid shell.

12. The children's motion device of claim 1 , wherein the portion of the child support configured for supporting the head of a child comprises a padded head rest.

13. The children's motion device of claim 1 , further comprising a user controllable vibration device configured for transmitting vibrations through the child support.