Roll-over shunt sensor
US5955714A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1998 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/147
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A ferromagnetic shunt is pivotally mounted to a housing to form a pendulum which swings between a reed switch and a magnet. As long as the shunt remains between the reed switch and the magnet the reed switch remains open. The shunt is held or biased between the magnet and the reed switch by the force of the magnetic attraction between the shunt and the magnet. The mass of the shunt acts as both a tilt sensor which responds to gravity and an accelerometer sensitive to crash-induced accelerations. The reed switch, magnet and shunt are mounted in a housing which positions the reed switch and magnet and controls the maximum range of motion of the shunt. The magnet is located between two sidewardly spaced pendulum arms, which allow the shunt to swing out from between the reed switch and the magnet in two opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.