US PATENT SUBCLASS 187 / 308
.~.~.~.~ Actuated by position or movement of access barrier or its position lock

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}
306  DF  .~.~ Actuated by human operator engaging specific input part {2}
307  DF  .~.~.~ With means for locking input part of control against movement by operator {1}
308.~.~.~.~ Actuated by position or movement of access barrier or its position lock {1}
309  DF  .~.~.~.~.~> Having barrier position lock operable only when load support or control input part safely positioned {1}

DEFINITION

Classification: 187/308

Actuated by position or movement of access barrier or its position lock:

(under subclass 307) Control* wherein the holding means for the information input component has its operation induced by the location or shifting of either (a) a passage door for the load-underlying support surface or (b) a device for holding such a door in its blocking or unblocking location.