Illumination – With static structure – Pavement
Patent
1996-08-27
1997-10-14
Sember, Thomas M.
Illumination
With static structure
Pavement
362267, 362310, 362328, 362308, F21V 3102, F21V 504
Patent
active
056764480
ABSTRACT:
The light fixture comprises a pod suitable for being embedded in the ground, and housing a light source, and a cover provided with at least one opening containing an optical unit facing the light source. The optical unit is sealed relative to the cover by a gasket which fits snugly around the perimeter of a base portion of the optical unit and which is compressed by means of a presser member applied against a bottom surface of the optical unit. The cover provides a housing designed for the gasket and defined by contact surfaces comprising a wall facing the perimeter of the optical unit and a top abutment for the gasket parallel to the mean plane of the cover. The perimeter of the optical unit is shaped to act against the gasket in the manner of a wedge so that the gasket is compressed against the contact surfaces under drive from the presser member, the gasket being made of a material that is capable of creep under compression stress so as to fill the gap between the perimeter of the optical unit and the facing wall.
REFERENCES:
patent: Re34709 (1994-08-01), Tyson
patent: 1425139 (1922-08-01), Rumsey
patent: 1572214 (1926-02-01), McEwing
patent: 1853321 (1932-04-01), Rogers
patent: 3369113 (1968-02-01), Loch
patent: 4924364 (1990-05-01), Pannier
patent: 4931914 (1990-06-01), Quioguc
patent: 5335151 (1994-08-01), Dahlberg
Sember Thomas M.
Thorn Europhane
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