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Continental Design & Engineering Patents
Composite Headlamp Vent Device
United States Patent
Nagengast et al. |
Patent Number: 5,003,446
Date of Patent: Mar. 26, 1991 |
| COMPOSITE HEADLAMP VENT DEVICE |
| Inventors: |
William E. Nagengast; James S. Mellinger; David R. McMahan,
all of Anderson, Ind. |
| Assignee: |
General Motors Corporation, Detroit, Mich. |
| Appl. No.: |
575,757 |
| Filed: |
Aug. 31, 1990 |
| Int. Class: |
F21V 29/00 |
| U.S. Class: |
362/294; 362/61; 362/345 |
| Field of Search: |
362/61, 294, 345, 373, 362/10 |
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References Cited
U.S. PATENT DOCUMENTS |
| 4747032 |
May 1988 |
Weber |
362/345 |
| 4849865 |
July 1989 |
Van Duyn |
362/294 |
4937710 |
June 1990 |
Hurley et al. |
362/294 |
Primary Examiner- Stephen F. Husar
Attorney, Agent, or Firm- Edward J. Biskup |
Abstract
A ventilation system for a replaceable bulb headlamp in which the reflector member is formed with at
least two slots in line with and behind the sealant channel and each slot is adapted to slidingly receive
a vent device which establishes a labyrinth-type flow path for air to enter and exit from the interior of
the headlamp.
12 Claims, 2 Drawing Sheets |
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