US PATENT SUBCLASS 187 / 322
.~.~.~.~ Includes rotating shaft extending between landings

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

313  DF  WITH BARRIER FOR REGULATING ACCESS TO LOAD SUPPORT {4}
315  DF  .~ Includes motor or motor driven linkage for shifting barrier {3}
318  DF  .~.~ Shifts barrier mounted at landing {4}
321  DF  .~.~.~ Motor stationarily mounted and linkable to barriers on different landings {1}
322.~.~.~.~ Includes rotating shaft extending between landings

DEFINITION

Classification: 187/322

Includes rotating shaft extending between landings:

(under subclass 321) Subject matter wherein the structural linkage includes an elongated rigid element which passes through plural landings* and turns about its longitudinal axis when transmitting power to path blocking means.