US PATENT SUBCLASS 172 / 411-- .~.~.~.~ "Constant height" depth adjustment

US PATENT SUBCLASS 172 / 411
.~.~.~.~ "Constant height" depth adjustment

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

395	DF	WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10}
407	DF	.~ Power operated adjustment {2}
408	DF	.~.~ Wheel actuates its crank axle mount {3}
410	DF	.~.~.~ Intermittently rotatable member swingable with crank {1}
411		.~.~.~.~ "Constant height" depth adjustment

DEFINITION

Classification: 172/411

(under subclass 410) Apparatus in which the frame may be lowered with respect to the wheel to varying depths but is always raised to the same height.

SEE OR SEARCH THIS CLASS, SUBCLASS:

413, for constant height depth adjustment for wheels vertically adjusted with respect to an implement frame by a servomotor.

487, for an actuator adapted to lift a tool for transport on a wheeled frame said actuator comprising a power unit with manual adjusting or supplemental manual actuating means and there being a constant height depth adjustment.