US PATENT SUBCLASS 33 / 30.7
.~.~.~ Planetary scriber arm

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

18.1  DF  SCRIBER {10}
27.01  DF  .~ Curved line {13}
30.1  DF  .~.~ Ellipsograph {7}
30.7.~.~.~ Planetary scriber arm

DEFINITION

Classification: 33/30.7

Planetary scriber arm:

(under subclass 30.1) Subject matter wherein the means for describing a line includes a scribing member on a radius that moves about a first circle while simultaneously moving about a second circle so that the scribing member forms an elliptical motion.