US PATENT SUBCLASS 198 / 330
.~.~ With drive means

Current as of: June, 1999
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198 /   HD   CONVEYORS: POWER-DRIVEN

321  DF  CONVEYOR OR ACCESSORY THEREFOR SPECIALIZED TO CONVEY PEOPLE {5}
326  DF  .~ By stairway having steps forming an endless member {6}
330.~.~ With drive means {1}
331  DF  .~.~.~> With means synchronizing the operation of the steps and a handrail

DEFINITION

Classification: 198/330

(under subclass 326) Device wherein the section is provided with means to effect movement of the endless member.