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Pneumatic Elevator

技术优势: Eliminates need for transfer between segments of an elevator systemPneumatic elevator assembly more companct than conventional systemsCost efficient and simple to maintain compared to conventional systems and competing pneumatic designs

*Abstract: In high rise structures, access elevators are limited in the height they serve, due to the weight of the cables that lift the elevator cab. Generally this design limits the height served to approximately thirty floors.

The University of California at Berkeley has available for licensing and commercial development a patent for a pneumatically operated elevator system using air pressure to move the elevator cab. The elevator has a pair of vertical shafts with several crossover shafts between them. With a cab in one vertical shaft, a fan in one of the crossover shafts moves air to produce a pressure differential above and below the cab to cause the cab to move up or down the shaft.

The primary and secondary shafts (and their crossover shafts) of the elevator assembly form an essentially closed system, allowing the use of recirculated air to move the cab up and down; a significant improvement over competing pneumatic designs that provide for outside air to be drawn into or expelled from the shafts.

附加资料: Patent Number: US6085873A
Application Number: US1999320935A
Inventor: Macchi, Anselmo John
Priority Date: 27 May 1999
Priority Number: US6085873A
Application Date: 27 May 1999
Publication Date: 11 Jul 2000
IPC Current: B65G005104 | B66B000700 | B66B000904 | B66B001308
US Class: 187273 | 187274 | 187275 | 187305 | 187373 | 187400
Title: Pneumatic elevator
Usefulness: Pneumatic elevator
Novelty: Pneumatic elevator has a pair of elongated vertical tubular cylindrical shafts and horizontally extending cross-over shafts extending between the vertical shafts adjacent their upper and lower ends to provide a substantially closed system

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