US PATENT SUBCLASS 446 / 241
.~ Including helically grooved or twisted shaft for imparting rotation

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

236  DF  ROTATING OR HAVING VISIBLE ROTATING PORTION (E.G., SPINNING OR WHIRLING, NOT ROLLING) {12}
241.~ Including helically grooved or twisted shaft for imparting rotation

DEFINITION

Classification: 446/241

Including helically grooved or twisted shaft for imparting rotation:

(under subclass 236) Device comprising an elongated element having helical convolutions about its longitudinal axis and which cooperates with structure on the revolving portion to impart successive revolutions thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43, for a flying toy having an airfoil which is rotated by using a helically grooved or twisted shaft.