US PATENT SUBCLASS 472 / 91
.~.~ Surface moves as a whole or comprises rotatable or rollable elements

Current as of: June, 1999
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472 /   HD   AMUSEMENT DEVICES

88  DF  SURFACE FOR WHEELED OR GLIDING VEHICLE {2}
90  DF  .~ For foot-attached gliding vehicle (e.g., ski slide, ice skating surface, etc.) {1}
91.~.~ Surface moves as a whole or comprises rotatable or rollable elements

DEFINITION

Classification: 472/91

Surface moves as a whole or comprises rotatable or rollable elements:

(under subclass 90) Amusement device wherein the underlying floor or ground riding surface translates as a unit (e.g., an endless movable belt) or consists of a plurality of turnable or revolvable components (e.g., revolvable rollers, balls, brushes, or ball bearings revolvable in sockets, etc.).

SEE OR SEARCH CLASS

193, Conveyors, Chutes, Skids, Guides, and Ways, particularly

35+, for a conveyor consisting of a series of rollers.

198, Conveyors: Power Driven, appropriate subclasses for a power driven, endless-belt type conveyor.

482, Exercise Devices, particularly

54, for a treadmill exercise device used for conditioning or developing a muscle of a human user as he or she walks or runs thereon.