Acoustical seal for elevator car doors

Details Acoustical seal for elevator car doors Acoustical seal for elevator car doors

1990-09-17

1992-01-28

Valenza, Joseph E.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 1R, 187 56, B66B 1102

Patent

active

050836390

ABSTRACT:
An apparatus for sealing an automatic elevator door against sound closes the small air gaps between a door post and a door leaf rear edge, between an abutment and the door leaf top edge, between abutting front edges of door leaves, between an inner door leaf front edge and outer door leaf rear edge in the case of telescopic doors, and between a door sill and a door leaf bottom edge. A post seal utilizes an elastic strip seal to close the post air gap. An abutment seal utilizes a sliding brush seal to close the abutment air gap. A door sill seal utilizes a labyrinth seal to close the sill air gap. A door edge seal utilizes a brush seal to close the front edge air gap. These seals close all the air gaps around the door leaves when the door is closed to prevent the ingress of sound of the noises produced mechanically outside the car.

REFERENCES:
patent: 3425162 (1969-02-01), Halpern
patent: 3945468 (1976-03-01), Miura et al.
patent: 4058191 (1977-11-01), Balbo
patent: 4735293 (1988-04-01), Everhart et al.

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