US PATENT SUBCLASS 446 / 173
.~ For moving element-supporting device

Current as of: June, 1999
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446 /   HD   AMUSEMENT DEVICES: TOYS

168  DF  INCLUDING UNATTACHED GRAVITY-FED ROLLING, TUMBLING, OR ENERGY-IMPARTING FALLING ELE ENT, OR PATHWAY THEREFOR (E.G., MARBLE RUNWAY) {4}
173.~ For moving element-supporting device {1}
174  DF  .~.~> Wheeled element carrier

DEFINITION

Classification: 446/173

For moving element-support device:

(under subclass 168) Device wherein the energy of the element is imparted to a portion of the device which supports the element, thereby causing that portion to move.

(1) Note. The portion of the device which is moved by the element must be a visible portion.