Emergency triangular road safety device
US4403565A · kind A · utility
23Cited by
9References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Mar 11, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q7/005
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An emergency warning device comprising a base, three arms extending upwardly from the base to define an equilateral triangle, one of the arms extending horizontally on the base and the other two arms extending upwardly. Each arm has reflective and fluorescent means on opposed surfaces thereof. Vane devices are constructed and arranged, shaped and positioned on the equilateral triangle and such that air flow against a face of the triangle produces a downward force tending to prevent movement of the device relative to a road surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.