Speed and direction indicator for elevator systems

Details Speed and direction indicator for elevator systems Speed and direction indicator for elevator systems

1999-02-01

2000-12-19

Salata, Jonathan

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

Monitors operational parameter

187393, B66B 300

Patent

active

061616567

ABSTRACT:
An elevator system includes an electronic driver which transmits a multi-phased electric current through a relay to a motor driving an elevator car. Under normal operating conditions, the motor uses the current from the driver to move the elevator car in a hoistway. When electric power fails, the elevator car is moved by gravity for any necessary rescue or maintenance operations, and consequently moves the motor. The movement of the motor generates a multi-phased electric current therein. The generated current is utilized to power a display panel of a movement indicator, which is automatically connected to the motor by the relay when power fails in the elevator system. The powered display panel informs the operator of the direction and speed of travel of the elevator car.

REFERENCES:
patent: 2620898 (1952-12-01), Lund
patent: 3599755 (1971-08-01), Lund et al.
patent: 3614616 (1971-10-01), Bucek et al.
patent: 4891741 (1990-01-01), Slattery et al.
patent: 4987977 (1991-01-01), Nomura
patent: 5157228 (1992-10-01), Ackermann et al.
patent: 5334917 (1994-08-01), Lind
patent: 5473725 (1995-12-01), Chen et al.
patent: 5585706 (1996-12-01), Avitan

Affiliated with

Also associated with

Rating

Speed and direction indicator for elevator systems does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speed and direction indicator for elevator systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speed and direction indicator for elevator systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-264192