Barrier operator with magnetic position sensor
US8113263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Oct 30, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A motorized operator for moving a barrier, such as a garage door, between open and closed positions, includes a magnetic sensor for determining position and/or velocity of the barrier. The operator motor is drivingly connected to a speed change transmission which is connected to the barrier. The magnetic sensor includes a housing supporting a speed change mechanism including an output shaft supporting a magnet. The magnet is mounted adjacent a Hall effect sensor circuit which measures the change in the magnetic field generated by the magnet to determine position of the barrier, as well as speed. Control circuitry enables accurate determination of the position of the barrier for setting open and closed limit positions, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.