US PATENT SUBCLASS 414 / 699
.~.~.~ Control means responsive to sensed condition

Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

680  DF  VERTICALLY SWINGING LOAD SUPPORT {9}
685  DF  .~ Shovel or fork type {8}
697  DF  .~.~ Tilting {11}
699.~.~.~ Control means responsive to sensed condition {2}
700  DF  .~.~.~.~> To maintain pitch during swinging
701  DF  .~.~.~.~> To stop tilting at selected angle

DEFINITION

Classification: 414/699

Control means responsive to sensed condition:

(under subclass 697) Apparatus including a means to sense a condition or change of condition and a control means acting in response to the sensing to effect an operation of the apparatus.

(1) Note. Subject matter in which the condition sensed is one which is caused by a human operator for the proximate purpose of operating a control is not included. For example, if an operator pulls a rope for the purpose of operating a control (e.g.,., a latch) and the control (latch) acts in response to means sensing the tension on the rope, this is not included; but if a human operator pulls a rope for the member and the control (latch) acts in response to means sensing the tension on the rope which results from the swinging member reaching a certain position, this is included. However, the definition does include subject matter in which the condition sensed causes response of a control means for a device which caused the condition. For example, the condition sensed may be the position of a latch which position causes response of a control means for a servo motor which has been operated for the purpose of moving the latch.

(2) Note. Subject matter in which the condition sensed and the control means acting in response to the condition are mere cyclically recurring conditions of a machine (e.g.,., the valves of an internal combustion engine acting in response to the position of the cams on the cam shaft) is not included.

SEE OR SEARCH THIS CLASS, SUBCLASS:

706+, especially 708, for apparatus where one means acts in response to the condition of another means but the means acting in response is not considered a control but rather a principal part of the apparatus such as an extensible link.

SEE OR SEARCH CLASS

172, Earth Working, 2+, for apparatus that works the earth in situ and has automatic control of power means for changing a condition of operation of the apparatus.