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

1990-07-23

1992-06-16

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

49409, 49120, B66B 1300

Patent

active

051218178

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 being foreseen to be mounted on a single track as a sliding guide. The rolling device includes a case which encloses rollers and counter rollers which roll along the track. The case is formed from two parts connected together and to a bracket on the door by a pair of fasteners. The fasteners form the axles of the rollers. The track can be circular in section and the rollers can be linear ball bearings.

REFERENCES:
patent: 1966182 (1934-07-01), McCormick
patent: 3426480 (1969-02-01), Dzamba
patent: 4073034 (1978-02-01), Martens

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