L.E.D. enhanced bus stop sign
US5635902A · kind A · utility
108Cited by
17References
6Claims
0Family size
Inventor
Key dates
| Filing date | Nov 16, 1994 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Nov 16, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/503
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A school bus stop sign (10) of the type rotatably coupled to a school bus (18) and movable between a retracted position adjacent to the school bus (18) and an extended position extending outwardly from the school bus (18) is disclosed. The bus stop sign (10) is characterized by an array of light emitting diodes (34) disposed on the bus stop sign (10) to provide illumination thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.