Trailer emergency brake lamp
US6452489B1 · kind B1 · utility
7Cited by
9References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Aug 10, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/44
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An emergency brake illumination system for a trailer illuminates the trailer brake lamps upon application of the emergency brakes. The system includes a pressure switch which senses pressure in the emergency brake system. The pressure switch is electrically connected between the blue circuit and the red circuit of a seven-way connector. If a loss of pressure is sensed by the pressure switch, the switch closes and power is provided by the blue circuit to the red circuit to illuminate the brake lamps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.