Illumination – Light source and modifier – Adjustable or repositionable modifier
Reexamination Certificate
2005-09-13
2005-09-13
Cariaso, Alan (Department: 2875)
Illumination
Light source and modifier
Adjustable or repositionable modifier
C362S267000, C362S285000, C362S319000
Reexamination Certificate
active
06942363
ABSTRACT:
A metal halide light fixture includes three generally cylindrical parts including a lamp housing with a lamp and a lamp socket, an intermediate sleeve member secured to the lamp housing, and a third focusing housing secured to the intermediate sleeve member. The focusing housing includes a reflector member including a concave reflecting surface and a lens. The lamp housing carries a T-6 lamp or similar lamp which includes a cylindrical arc tube having a significant axial length. Rotating the focusing housing moves the reflector member which surrounds the lamp axially relative to the arc tube to shift the light output pattern from floodlight to spotlight. The lamp housing is connected to a mounting structure through a swivel connection. Wires from the lamp socket are fed through a port in the lamp housing and a channel in the mounting structure and are potted in place. Threaded connections between the three principal parts are protected by O-ring seals.
REFERENCES:
patent: 3703635 (1972-11-01), Burkath
patent: 4307439 (1981-12-01), Sassmannshausen
patent: 4725932 (1988-02-01), Gammache
patent: 4729065 (1988-03-01), Bahnemann et al.
patent: 4729077 (1988-03-01), Gordin et al.
patent: 4777566 (1988-10-01), Lowell et al.
patent: 4984141 (1991-01-01), Lai et al.
patent: 5083253 (1992-01-01), Hahnel
patent: 5630661 (1997-05-01), Fox
patent: 6702452 (2004-03-01), Jigamian et al.
Cariaso Alan
Cooper Technologies Company
Smith Robert C.
Wagner John E.
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