A device for inhibiting the closing of a door that controls entry of an enclosure includes a first magnet disposed on a driven portion of the device and a second magnet disposed on a fixed portion of the enclosure. The first magnet and the second magnet are configured to be in register with each other as the door moves toward a closed position such that if the first magnet and the second magnet are in register with each other, a pole of the first magnet is in close proximity of a pole of the second magnet such that the first magnet and the second magnet react to each other to inhibit motion of the door towards the closed position.
Braking device for a door operator
2017-08-15
Patent
Electronic Resource
English
Omnibus braking and door control
Engineering Index Backfile | 1929
DOOR CONTACT-PREVENTING SENSORS WITH DOOR BRAKING SYSTEM
European Patent Office | 2018
|