US PATENT SUBCLASS 172 / 293
SERIES OF LIKE ELEMENTS SEQUENTIALLY OPERATED BY POWER CYCLE


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

Internet Version by PATENTEC © 1999      Terms of Use



172 /   HD   EARTH WORKING

293SERIES OF LIKE ELEMENTS SEQUENTIALLY OPERATED BY POWER CYCLE {3}
294  DF  .~> Sequentially operated servo-motors
295  DF  .~> Tool forward of rear of motor vehicle
296  DF  .~> Shaft with spirally arranged projections


DEFINITION

Classification: 172/293

(under the class definition) Apparatus comprising power driven actuating means and means whereby a plurality of like elements (such as earth working elements or wheels) are moved one after another by the actuating means after only one setting of a control device for the actuating means.

(1) Note. Manually actuated devices are excluded. Power is derived from a motor such as a servomotor or by a mechanical power take-off as from a rolling wheel or motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

407, for a ground support which is vertically adjustable relative to a frame by power-operated means.