US PATENT SUBCLASS 446 / 244
.~.~ Thaumatropic effect

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


446 /   HD   AMUSEMENT DEVICES: TOYS

236  DF  ROTATING OR HAVING VISIBLE ROTATING PORTION (E.G., SPINNING OR WHIRLING, NOT ROLLING) {12}
243  DF  .~ Including markings producing visual effect (e.g., chromatic) {2}
244.~.~ Thaumatropic effect

DEFINITION

Classification: 446/244

Thaumatropic effect:

(under subclass 243) Device including two discrete visual impressions which are present successively when the device or portion is rotated and which employ the memory of the eye to yield, an appearance which is a combination of the two impressions.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures, appropriate subclasses for a device which is structurally similar but creates an illusion of motion. See particularly

101, for picture drums.