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US 4,377,802 AGranted
Lamp/reflector assembly
AssigneeWhelen Engineering Company, Inc.
InventorRobert A. Ferenc
Life of this patent
Estimating the term…
Abstract
A reflector for rotatable signal lights includes a pair of coaxial parabolic reflecting surfaces which are interrupted and joined back-to-back with the juncture forming an aperture which defines a plane through the common focal point of the two reflecting surfaces. A lamp is positioned within this aperture so that its filament is intersected by and perpendicular to the plane formed by the aperture. The doubled-ended reflector and associated lamp is used in conjunction with any conventional type of rotating of oscillating drive.
Claims8
A warning light assembly comprising:
- reflector means, said reflector means having two coaxial concave surfaces, said concave surfaces being reflective and arranged back-to-back, said surfaces intersecting at a common plane perpendicular to the axis thereof, an aperture coaxial with said surfaces being defined by the intersection of said surfaces;
- light source means, said light source means being supported in reflector means, said light source means including an incandescent lamp positioned with its filament at least in part lying in said plane of intersection;
- and
- means for rotating said reflector means and said light source means as a unit.
1 more element
Dependencies are inferred from the claim text.