Vehicle braking action alarming apparatus
US5111182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1990 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Apr 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/535
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle braking action alarming apparatus includes: a general stop-lamp or high-mount stop-lamp having a light emitting element which includes a light emitting diode; an oscillator for generating a signal at a predetermined frequency; a driver for driving and illuminating the stop-lamp; a controller for applying an output from the oscillator to the driver when a brake switch of the vehicle is turned on; a photosensor mounted at the front of the vehicle for receiving light from the stop-lamp of another preceding vehicle; and a processor/driver unit for processing a signal from the photosensor which received the light from the preceding vehicle, and for driving a sound source for generating an audible alarm sound warning of a braking action in the preceding vehicle. The oscillator is timed so as to operate only during a brief initial period following the actuation of the brake switch, which period can be moderately prolonged for the audible alarm in the receiving processor/driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.