Movable or removable closures – Plural wings radiate from common pivot; i.e. – revolving – With speed regulator
Patent
1995-10-02
1997-08-05
Dorner, Kenneth J.
Movable or removable closures
Plural wings radiate from common pivot; i.e., revolving
With speed regulator
E05D 1502
Patent
active
056530560
ABSTRACT:
An apparatus for controlling the operation of a revolving door, in which an electric motor provides an assistance mode which supplies assistance so that the manual force applied by a person to a panel of the revolving door is reduced by a .DELTA.v, and thus the person using the door need only apply a slight additional force.
REFERENCES:
patent: 3497997 (1970-03-01), Sheckells
patent: 4339843 (1982-07-01), Burnett
patent: 4581849 (1986-04-01), Schwarz
patent: 5097454 (1992-03-01), Schwarz et al.
Dorma GmbH & Co. KG
Dorner Kenneth J.
Redman Jerry
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