US PATENT SUBCLASS 472 / 41
.~.~.~ Concentric arrangement

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

1  DF  ROUNDABOUT {12}
29  DF  .~ Having carrier rotating about vertical axis (e.g., merry-go-round, etc.) {6}
40  DF  .~.~ Disk, ring, or bowl {2}
41.~.~.~ Concentric arrangement

DEFINITION

Classification: 472/41

Concentric arrangement:

(under subclass 40) Subject matter wherein the disk, ring, or

bowl is surrounded by another disk, ring, or bowl sharing a common vertical axial region.

(1) Note. The concentric arrangement includes disks, rings, bowls, or a mixture thereof, which may rotate in different directions, elevations, or at different speeds relative to each other or which may slightly overlap in a radial direction.