Combination vehicle flasher having first and second flash rates and duty rates
US5247280A · kind A · utility
21Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Aug 1, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/382
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An integrated circuit is utilized to control a switch so the flash rate and duty cycle of a flasher system is accurately regulated. The tighter control allows two flash rate and duty cycle combinations whereby a driver perceives a significant difference between the two settings, normal operation and lamp out operation. Such a feature allows one flasher to meet all Federal Motor Vehicle Safety Standards when used as a combination flasher for a 3-lamp turn signal and a 6-lamp hazard warning lighting system in vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.