Elevator apparatus with position correction for overspeed...

Details Elevator apparatus with position correction for overspeed... Elevator apparatus with position correction for overspeed...

2007-06-12

2007-06-12

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

C187S287000, C187S305000

Reexamination Certificate

active

10486657

ABSTRACT:
An elevator apparatus has a criterion (overspeed levels) that changes in accordance with an operational condition of a car. The elevator apparatus also has a position information correcting means that corrects an error in value that determines the criterion. In the elevator apparatus, the overspeed levels are determined using continuous information corresponding to car position, while the continuous information is corrected using intermittent information corresponding to actual car position. According to the elevator apparatus, on-the-spot adjustment or long-time maintenance becomes unnecessary, and overspeed detection levels can easily be changed in accordance with the operation conditions of the car.

REFERENCES:
patent: 3747710 (1973-07-01), Winkler
patent: 3774729 (1973-11-01), Winkler
patent: 3779346 (1973-12-01), Winkler
patent: 4128141 (1978-12-01), Caputo et al.
patent: 4161236 (1979-07-01), Husson
patent: 4726450 (1988-02-01), Fossati et al.
patent: 5869794 (1999-02-01), Spiess
patent: 6170614 (2001-01-01), Herkel et al.
patent: 7-157210 (1995-06-01), None

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