Ventilator for elevator cage

Details Ventilator for elevator cage Ventilator for elevator cage

1994-01-14

1995-10-24

Joyce, Harold

Ventilation

Elevator

181224, 181225, 454252, 454906, F24F 7007

Patent

active

054605709

ABSTRACT:
An elevator cage with an ventilator which has supply system for supplying fresh air into the cage and exhaust system for exhausting air from the cage. An active noise controller is provided to at least the supply system to cancel noise which is caused by a supply fan provided in the supply system and changing air force between the cage and a path to guide the cage while the cage moves at high speed.

REFERENCES:
patent: 1033963 (1912-07-01), Surprise
patent: 2112608 (1938-03-01), Schmidt
patent: 2310414 (1943-02-01), Fritzam et al.
patent: 3125286 (1964-03-01), Sanders
patent: 4403370 (1983-09-01), Rapp
patent: 4773310 (1988-09-01), Corwin
patent: 5029218 (1991-07-01), Nagayasu
Elevator, Escalator and Amusement Rides Conference, No. 930-6, Feb. 22, 1993, Akihiko Okamura, et al., "Noise Reduction Technology on Ultra-High Speed Elevators", pp. 31-34 (with partial English translation).

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