Simplified automatic telescopic doors for elevators

Details Simplified automatic telescopic doors for elevators Simplified automatic telescopic doors for elevators

1990-07-23

1991-10-29

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 56, 49120, B66B 1300

Patent

active

050607634

ABSTRACT:
The improvments are applicable to elevator doors and even to doors of vehicles, either made out of two leaves which move in the same direction for the opening and closing thereof, or made out of four leaves each pair of the four leaves opening in the center. The improvements are centered on the use of a single track for both leaves or door panels, a track which may have a rectangular or circular section, located in a box with rolling or movement components which are fastened to the corresponding hanger support of the panel or door. Another improvement consists of the two panels of the door being exactly the same, each one of them including a sound absorbing element. The door frame unit is removable with preassembled active elements so that the same may be transported in a compact, easy manner from the factory to the place of use.

REFERENCES:
patent: 1966182 (1934-07-01), McCormick
patent: 4177881 (1979-12-01), Kappenhagen
patent: 4357993 (1982-11-01), Halpern et al.

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