US PATENT SUBCLASS 187 / 300
.~.~ Actuated by presence of obstruction in shaft

Current as of: June, 1999
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187 /   HD   ELEVATOR, INDUSTRIAL LIFT TRUCK, OR STATIONARY LIFT FOR VEHICLE

250  DF  HAVING SPECIFIC LOAD SUPPORT DRIVE-MEANS OR ITS CONTROL {6}
276  DF  .~ Includes control for power source of drive-means {6}
300.~.~ Actuated by presence of obstruction in shaft

DEFINITION

Classification: 187/300

Actuated by presence of obstruction in shaft:

(under subclass 276) Control* in which the information input component has its operation induced by the presence of an object (e.g., foot) projecting into the shaft* and when the object is in this location it is either (a) obstructing the safe passage of the load-underlying support surface or (b) endangering its safety when the load-underlying support surface passes through the shaft*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

279, for an electric control* for the power source of the drive-means* actuated by the presence of an obstruction in the shaft*.