Braking device
US10633901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Feb 6, 2038 |
Classification
- Technology area (CPC —)General
Abstract
A braking device for a movable door wing comprising an electric motor operated as a generator wherein its motor shaft is rotatable by a movement of the door wing and which outputs a motion-dependent motor voltage, and a braking circuit to which the motor voltage is applied or can be applied and via which the electric motor can be short-circuited in order to dampen a movement of the door wing. In addition, it is provided that the braking device comprises a safety device with a current sensor which is designed to detect amperage generated by the electric motor. The safety device is designed to modify the braking circuit depending on the detected amperage in such a way that upon reaching or exceeding a predetermined or predeterminable overload amperage, the current in the braking circuit is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.