초록 ▼

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

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.

대표청구항 ▼

An emergency warning device comprising a base adapted to rest on a road surface, three arms extending upwardly from the base to define a triangle, the plane of the triangle defining a face generally perpendicular to the road surface and adapted to face the oncoming traffic when the device is on a ro

An emergency warning device comprising a base adapted to rest on a road surface, three arms extending upwardly from the base to define a triangle, the plane of the triangle defining a face generally perpendicular to the road surface and adapted to face the oncoming traffic when the device is on a road surface, one of said arms extending horizontally on said base and said other two arms extending upwardly, each arm having passive signal means on at least one surface thereof, and vane means constructed and arranged, shaped and positioned on said triangle such that wind air flow against the vane means flows upwardly and produces a downward force on the vane means increasing the drag between the base and the road surface tending to prevent movement of the device relative to a road surface.