ANTI-FOG HEADLIGHT WITH OPAQUE MASK

• US 3,703,636 A
• Filed: 04/07/1971
• Issued: 11/21/1972
• Est. Priority Date: 04/07/1971
• Status: Expired due to Term

• Current Assignee: Roman A. Schmitt
• Original Assignee: Roman A. Schmitt
• Inventors: Schmitt, Roman A.
• Primary Examiner(s): Matthews, Samuel S.
• Assistant Examiner(s): Mathews, Alan A.
• Application Number:
  US05/132,096
• Time in Patent Office: 594 Days
• Field of Search: 240/41.4,46.03,46.07,46.09,46.27,46.31,46.33,46.45,46.49,46.53,46.55,46.43,46.1
• US Class Current: 362/298
• CPC Class Codes: F21S 41/29 Attachment thereof for achieving variable light distribution F21S41/63
• CPC Class Codes: F21S 41/43 characterised by the shape thereof
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40

Abstract

A sealed beam headlamp has a convex front transparent lens integrally joined peripherally to a parabolic reflector. An internal centered incandescent filament is carried by the reflector. An anti-fog mask is applied to the lens at either side or is embedded in the lens. The mask is a black, opaque member. It has arms crossed at a right angle. The arms extend across vertical and horizontal of the lens dividing it into four clear quadrants. The mask can be made of flexible, springy material removably held on the headlamp by flexible tabs at ends of the arms. The arms can be pivotally joined to each other.

Claims

1. An anti-fog headlamp assembly comprising a sealed beam headlamp having a transparent, externally convex front lens, a parabolic reflector integrally joined peripherally with said lens, and an incandescent filament carried by the reflector at its focal center;

and a mask for reducing glare and increasing penetrating power of light emitted by the headlamp, said mask comprising two opaque arms crossed in a right angle cross configuration, said mask being applied to the lens and extending across the same with said arms respectively horizontal and vertical, the center of the mask being aligned with said filament to prevent intense direct light beams emitted by the filament from passing out through the lens in diametral vertical and horizontal planes, and to divide the lens into four clear quadrants through which diffused light beams can pass from the filament after internal reflection by the reflector;

said mask being a separate device applied to the external convex side of the lens, and further comprising means for removably securing the mask to the headlamp;

said arms of the mask being pivotally joined to each other at their centers so that the arms can be aligned with each other when the mask is in a closed position.

2. An anti-fog headlamp assembly as defined in claim 1, wherein the mask is made of flexible, springy material, and wherein the removable securing means comprises flexible springy tabs at ends of the arms engaging on the periphery of the lens and reflector.