Dual-car elevator system with common counterweight

Details Dual-car elevator system with common counterweight Dual-car elevator system with common counterweight

2007-12-14

2010-02-16

Nguyen, John Q (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Having independent supports carrying distinct loads and...

C187S257000, C187S258000, C187S266000

Reexamination Certificate

active

07661513

ABSTRACT:
An elevator system has a lower elevator car, an upper elevator car and a counterweight. A first drive drives the lower elevator car and a second drive drives the upper elevator car. Two parallelly extending guide rails lying in the region of a vertical center plane guide the elevator cars. A support device for the elevator cars and the counterweight comprises two separate support strands. The lower elevator car is fixed at two substantially diagonally opposite points of a horizontal plane each at a respective end of one of the support strands. The upper elevator car is similarly fixed at two substantially diagonally opposite points of a horizontal plane each at an end of one of the support strands, wherein the two diagonals intersect.

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