Passive garage door operator system
US6002332A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00365
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A passive remote garage door operator system including a magnetic field sensor which detects a magnet having a flux density and a transmitter that sends a coded security signal to activate a garage door. A controller determines whether the magnet field sensor detects the magnet from a first direction or a second direction and activates the position of the garage door. The magnetic field sensor is preferably affixed to the underside of a vehicle and the magnets are embedded in a driveway leading to the garage. The system thereby automatically opens a garage door based upon the approach of a vehicle and closes automatically based upon the exit of the vehicle without any intervention by the human vehicle operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.