driving pinion

driving pinion

[′drīv·iŋ ‚pin·yən]
(mechanical engineering)
The input gear in the differential of an automobile.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The gear teeth on the intermittent knotter gear then operates the disk driving pinion and turns the disk sufficiently to permit the twine holder to secure both strands of twine in the disk.