Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Patent
1995-07-31
1997-07-01
Husar, Stephen F.
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
362 66, F21V 2900
Patent
active
056429355
ABSTRACT:
A venting structure is provided on a headlamp adjustor for venting the inside of a sealed stationary component which houses a movable headlamp component, such as a reflector member, in a headlamp arrangement. The headlamp adjustor is mounted to the sealed stationary component and is used to effect pivotal motion of the headlamp component. The headlamp adjustor includes a housing member and an adjusting screw member which is operatively engaged with an axial bore through the housing member. A vent passageway is formed through the housing member or through the screw member. The venting structure is formed of a one-way vent which is connected to headlamp adjustor and is in communication with the vent passageway through the housing member. The vent allows pressure and moisture laden air to pass outwardly from the inside of the sealed stationary component to the atmosphere while only allowing air and a limited amount of moisture to pass from the atmosphere to the inside of the sealed stationary component. The one-way vent may take the form of a microporous filter material housed in a tube-like body member or a rubber flapper valve.
REFERENCES:
patent: 4796163 (1989-01-01), Dressler
patent: 4802068 (1989-01-01), Mokry
patent: 5251111 (1993-10-01), Nagengast et al.
patent: 5355287 (1994-10-01), Denley
patent: 5488547 (1996-01-01), Hiraoka
Vent Made by Filtertek, Inc., no publication date.
Designing and Specifying Ventilation System For Exterior Lamps, Ford Plastic and Trim Products Division, pp. 1-12, Feb. 8, 1994.
Husar Stephen F.
Textron Inc.
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