Driveway alarm system
US6166660A · kind A · utility
Inventor
Key dates
| Filing date | Sep 15, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Sep 15, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/52
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A driveway alarm system for disposing along a driveway of a home or business for warning an occupant of the premise about an object, including a vehicle, on the driveway, or for warning a driver of a vehicle about an overhanging object in the driveway. The overhead warning and driveway alarm system includes a solar panel, a battery, a magnetic field generator, a driveway probe and a transmitter. The solar panel charges the battery which powers the driveway probe and the transmitter. The driveway probe creates a magnetic field. When the magnetic field is disturbed, the transmitter is activated, sending a radio signal to the receiver. In operation, when a car or other object disturbs the magnetic field proximate the driveway probe sensor, the transmitter provides a radio alert signal to the indoor subsystem. The overhead warning and driveway alarm system also includes a radio signal receiver, a line carrier current transformer, and line carrier current triggered audio devices such as chiming loudspeakers which are powered by standard 110 volt household AC outlets. The receiver activates the line carrier current transformer causing all audio devices plugged into 110 volt outlets to em…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.