Method and apparatus for operating an elevator system

Details Method and apparatus for operating an elevator system Method and apparatus for operating an elevator system

2007-01-17

2009-11-17

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

C187S254000

Reexamination Certificate

active

07617912

ABSTRACT:
A method of operating an elevator system with a drum for taking up a suspension device, a drive unit for driving the drum, and a control unit for controlling the drive unit, includes operating the control unit of the drive unit to prescribe a rotational speed that depends on a length of the suspension device that is rolled onto the drum. Also included is an elevator system in which the method can be used.

REFERENCES:
patent: 1866911 (1932-07-01), Schroeder
patent: 3497787 (1970-02-01), Fuelster et al.
patent: 5070967 (1991-12-01), Katzy et al.
patent: 5120023 (1992-06-01), Kawabata
patent: 5836343 (1998-11-01), Jones
patent: 6089355 (2000-07-01), Seki et al.
patent: 6305499 (2001-10-01), Jones et al.
patent: 2136540 (1971-07-01), None
patent: 01 176624 (1989-07-01), None
patent: 07 010402 (1995-01-01), None

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