Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Reexamination Certificate
2007-08-28
2007-08-28
Guharay, Karabi (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
C313S638000, C313S573000
Reexamination Certificate
active
10607162
ABSTRACT:
An arc discharge metal halide lamp for use in selected lighting fixtures comprising a discharge chamber having light permeable walls of a selected shape including therein a pair of end region wall portions through each of which a corresponding one of a pair of electrodes are supported separated from one another by a separation length. The ratio of the separation length to the effective operation inner diameter of the chamber is greater than two. The lengths of the wall sides between the end wall portions is greater than the effective operation inner diameter. The end wall portions have inner surfaces of constant or smaller varying radii of curvature and they are separated from the interior ends of the electrodes by more than one millimeter. The discharge chamber can be constructed of polycrystalline alumina and contain metal halides.
REFERENCES:
patent: 5153482 (1992-10-01), Keijser et al.
patent: 5936351 (1999-08-01), Lang
patent: 5973453 (1999-10-01), Van Vliet et al.
patent: 6137230 (2000-10-01), Born et al.
patent: 6147453 (2000-11-01), Geijtenbeek et al.
patent: 6300729 (2001-10-01), Keisjer et al.
patent: 6724144 (2004-04-01), Takeji et al.
patent: 6747411 (2004-06-01), Miyazawa
patent: 2003086130 (2003-03-01), None
Anami Shinichi
Brates Nanu
Lambrechts Stefaan M.
Maya Jakob
Zhu Huiling
Guharay Karabi
Kinney & Lange , P.A.
Matsushita Electric & Works Ltd.
Matsushita Electric - Industrial Co., Ltd.
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