US PATENT SUBCLASS 414 / 331.15
.~.~ Having means for detecting presence of article on rack

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

331.01  DF  MOVABLE RACK HAVING SUPERPOSED, CHARGE-SUPPORTING ELEMENTS, AND EXTERNAL MEANS FOR CHARGING OR DISCHARGING ELEMENTS {5}
331.14  DF  .~ Rack moved vertically by elevating means {4}
331.15.~.~ Having means for detecting presence of article on rack

DEFINITION

Classification: 414/331.15

Having means for detecting presence of article on rack:

(under subclass 331.14) Subject matter wherein the rack includes a sensor which detects the presence of a load on the rack.

(1) Note. The sensor in response to detecting the load actuates a device which controls the loading and unloading of the load supporting receptacles.