US PATENT SUBCLASS 340 / 685
.~.~.~ Cranes


Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
679  DF  .~.~ Machine condition {6}
685.~.~.~ Cranes


DEFINITION

Classification: 340/685

Cranes:

(under subclass 679) Subject matter where the machine is a crane.

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668, for cable tension in cranes.

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212, Traversing Hoists,

276+, for automatic stop control for cranes, and other condition sensors which regulates an indicator, alarm, or controller. Class 212 takes condition responsive indicator systems claimed in combination with any structural details of a crane.