Carlson, Gaskey & Olds
Braking device for a door operator
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.
Otis Elevator Company
B E E B B
B66B E05F E05F B66B B66B
inventional inventional inventional additional inventional
Byeong Sam Mark Steven Jung Sam Hansoo Jinkoo Guohong
Yoo Thompson Kim Shim Lee Hu