초록 ▼

A device for transporting persons between spaced landings using pairs of drive rollers, preferably gears, having a flexible belt loop therebetween made to abut the handrail to move the handrail. Springs and idler gear can be used to maintain the abutting relationship. The drive rollers are carried b

A device for transporting persons between spaced landings using pairs of drive rollers, preferably gears, having a flexible belt loop therebetween made to abut the handrail to move the handrail. Springs and idler gear can be used to maintain the abutting relationship. The drive rollers are carried by shafts mounted on bearings bolted to the fixed supporting structure.

대표청구항 ▼

[ I claim:] [1.] In a device for transporting persons between spaced landings, an upper load run on which passengers stand and a lower return load run, an endless, flexible handrail, a supporting structure for guiding the handrail in a closed elongated loop, said handrail having an upper run with an

[ I claim:] [1.] In a device for transporting persons between spaced landings, an upper load run on which passengers stand and a lower return load run, an endless, flexible handrail, a supporting structure for guiding the handrail in a closed elongated loop, said handrail having an upper run with an outer surface to be grasped by persons to operate as a balustrade and a low return run, and driving means for applying a separate force between the handrail and the structure acting substantially in the same direction at each of a plurality of points spaced between the ends of the loop along the return run of the handrail in the direction of movement of the return run;the improvement wherein said driving means comprises a plurality of pairs of timing gears spaced along the return run, each of said pairs of timing gears being closely spaced and having a timing belt loop running therebetween, said timing gears having teeth interfitting with said timing belt, means mounting each of said timing gears relative to the structure for rotation about a separate axis extending transverse to the direction of movement of the handrail, each said timing belt loops having a portion of its periphery positioned for flush engagement with a first surface of the handrail, each of the drive gears forming a pair accommodating a single rotatable idler gear to keep pressure between said timing belt loop and said handrail to prevent slippage between the handrail and said drive means, means biasing the opposite surface of the handrail to urge the handrail against the timing belt loop, and coupling means mechanically coupling the timing gears together for rotation, said coupling means including driving means coupled to at least one of said timing gears for rotating the pairs of drive rollers to move the handrail.