US PATENT SUBCLASS 74 / 840
ROTARY DRIVEN DEVICE ADJUSTABLE DURING OPERATION RELATIVE TO ITS SUPPORTING STRUCTURE


Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

840ROTARY DRIVEN DEVICE ADJUSTABLE DURING OPERATION RELATIVE TO ITS SUPPORTING STRUCTURE {2}
841  DF  .~> Screw and nut adjusting means
842  DF  .~> Rack and pinion adjusting means


DEFINITION

Classification: 74/840

(under the class definition) Mechanisms comprising means to drive a load device in a circular or orbital path about a

fixed axis lying either within or outside the confines of the device and having means operable while the mechanism is in motion to change the location of the device relative to supporting structure which does not partake of all motions of the device.

(1) Note. This and the indented subclasses were established (1963) on the basis of patents originating in the arts of expansible chamber motors and boring or penetrating the earth. Similar organizations of mechanical movements or gearing may be found in this class in subclasses below providing for some aspect of the total organization provided for in this group of subclasses. No attempt has been made to screen the subclasses below to remove such art.

(2) Note. This and indented subclasses may include either gearing or mechanical movement mechanisms or combination gearing and mechanical movement mechanisms.