US PATENT SUBCLASS 172 / 299
.~ Power actuator with cut-out or lock-out means


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

297  DF  TOOL FORWARD OF REAR OF MOTOR VEHICLE {10}
299.~ Power actuator with cut-out or lock-out means


DEFINITION

Classification: 172/299

(under subclass 297) Apparatus provided with an actuator for lifting the earth working element out of ground contact to transport position, said actuator including a power means comprising a servomotor or a power take-off and (1) having means operative to permit movement of the power means output member without moving the earth working element, the range of movement being such that the earth working element may remain in working position or transport position while the power means output member traverses its full range of movement between transport and working position or (2) having means for preventing operation of the power means in addition to the normal controls for the power means.

(1) Note. For the meaning of "actuator" see the class definition.

(2) Note. Various commonly used means, such as chain connection between a rock arm and a drag bar, are inherently capable of being used to allow full movement of the power means without moving the earth working element, but such devices are not classified under this definition unless this function is specifically described.