Drive device for a revolving door

Details Drive device for a revolving door Drive device for a revolving door

1996-04-25

1998-06-30

Sircus, Brian

Electricity: motive power systems

Constant motor current, load and/or torque control

49 43, E05D 1502, H02P 700

Patent

active

057739439

ABSTRACT:
A drive device for a revolving door, in which, when a drive unit is used, all types of installation are possible, e.g., below the floor, above the ceiling, below the ceiling and also above the floor.

REFERENCES:
patent: 3766686 (1973-10-01), Sheckells
patent: 3897651 (1975-08-01), Sheckells
patent: 4341165 (1982-07-01), Calandritti et al.
patent: 4628496 (1986-12-01), Lee
patent: 4785580 (1988-11-01), Olesen
patent: 5019756 (1991-05-01), Schwarz

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