Elevator system

Details Elevator system Elevator system

1979-12-28

1981-12-29

Witkowski, S. J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

318506, B66B 502

Patent

active

043077935

ABSTRACT:
An elevator system of the traction type having a direct current drive motor and a solid-state, dual-bridge converter power supply. Protective and monitoring apparatus reduce the probability of fuse blowing due to improper gating of a controlled rectifier device, and/or a power supply interruption, while enabling the system to override longer power supply interruptions without initiating shutdown in certain instances. The deceleration range of the elevator car is narrowed, when an orderly shutdown is required, by sensing predetermined parameters of the elevator system and logically selecting the value of a dynamic braking resistance in response thereto.

REFERENCES:
patent: 3961688 (1976-06-01), Maynard
patent: 4016468 (1977-04-01), Graf
patent: 4085823 (1978-04-01), Caputo et al.
patent: 4155427 (1979-05-01), Caputo et al.
patent: 4165801 (1979-08-01), Watanabe et al.

Affiliated with

Also associated with

Rating

Elevator system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elevator system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1015100