US PATENT SUBCLASS 187 / 320
.~.~.~ Plural interconnected motors shift barriers at different 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}
320.~.~.~ Plural interconnected motors shift barriers at different landings

DEFINITION

Classification: 187/320

Plural interconnected motors shift barriers at different landings:

(under subclass 318) Subject matter having at least two distinct energy converting devices which either (a) share a common energy supply system, (b) power portions of the same drive-means*, or (c) have their operation regulated by the same control* and which move distinct path blocking means stationarily positioned at various landings* along the shaft*.