Shutter control apparatus
First Claim
Patent Images
1. An apparatus for actuating from outside of a building an electric motor drive for winding and unwinding a shutter on the building, said apparatus comprising:
- switch means located outside of the building and having a first position in which it connects the main electric current supply of the building with said electric motor drive;
an auxiliary electric power source for directing electric power to said electric motor drive when the main electric power supply is lost;
access means located outside of the building and connected with said auxiliary electric power source for connecting said auxiliary electric power source and said electric motor drive; and
said switch means having a second position in which it connects said access means with said electric motor drive.
3 Assignments
0 Petitions
Accused Products
Abstract
A shutter control apparatus is disclosed for providing an auxiliary power source to drive a shutter motor. A double-pole, double-throw switch selectively connects an electric shutter motor to a primary electrical source of power or, when the primary source of power is interrupted, is switched to connect a self contained auxiliary power source to the shutter motor so as to permit extension and retraction of the shutter door.
29 Citations
5 Claims
-
1. An apparatus for actuating from outside of a building an electric motor drive for winding and unwinding a shutter on the building, said apparatus comprising:
-
switch means located outside of the building and having a first position in which it connects the main electric current supply of the building with said electric motor drive; an auxiliary electric power source for directing electric power to said electric motor drive when the main electric power supply is lost; access means located outside of the building and connected with said auxiliary electric power source for connecting said auxiliary electric power source and said electric motor drive; and said switch means having a second position in which it connects said access means with said electric motor drive. - View Dependent Claims (2, 3, 4)
-
-
5. An apparatus comprising:
-
a roll-up shutter for a building; a rotatable tube on which said roll-up shutter is wound; a revresible alternating current electric motor for rotating said rotatable tube in opposite directions to wind said roll-up shutter onto the tube and to unwind said roll-up shutter therefrom; first switch means located outside of the building and having a first position in which it connects the main electric alternating current supply of the building with said electric motor; an auxiliary electric power source for directing electric power to said electric motor when the main electric current supply is lost, said auxiliary power source comprising; a direct current battery, means for charging said battery from the main electric current supply, and an inverter for converting direct current from the battery to alternating current; access means located outside of the building for connecting said inverter with said electric motor, said first switch means having a second position in which it connects said access means with said electric motor when the main electric current supply is lost; and second and third switch means located, respectively, inside and outside of the building for actuating said electric motor when said first switch means is in its first or second positions.
-
Specification