Roller-track systems for telescopic doors on elevators

Details Roller-track systems for telescopic doors on elevators Roller-track systems for telescopic doors on elevators

1992-04-16

1993-11-30

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

49120, B66B 1300

Patent

active

052657027

ABSTRACT:
The device is applicable to elevator telescopic two-speed doors, using either two panels with opening towards one side or else using four panels with opening in the center. The rolling device comprises linear ball bearings mounted on a single circular track which together provide a sliding apparatus for the doors. The rolling device further comprises a case for enclosing the sliding apparatus to minimize the intrusion of foreign objects such as dirt and dust.

REFERENCES:
patent: 1966182 (1934-07-01), McCormick

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