US PATENT SUBCLASS 172 / 465-- .~ Servo-motor with follow-up control (e.g., motion responsive position control, etc.)

US PATENT SUBCLASS 172 / 465
.~ Servo-motor with follow-up control (e.g., motion responsive position control, etc.)

Current as of: June, 1999
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172 /	HD	EARTH WORKING

452	DF	WITH ACTUATOR ADAPTED TO LIFT TOOL FOR TRANSPORT ON WHEELED FRAME OR BROADLY CLAIMED IMPLEMENT {37}
465		.~ Servo-motor with follow-up control (e.g., motion responsive position control, etc.)

DEFINITION

Classification: 172/465

(under subclass 452) Apparatus in which the actuator for lifting the earth working element comprises a servomotor and there are means operated in response to the motion of the servomotor for stopping the motor before the limit of motion is reached.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9, for automatic draft responsive power control apparatus combined with a position control device.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

358+, for expansible chamber motors having working member position responsive feedback control.