Electric lamp and discharge devices – With envelope – Having base and connector
Reexamination Certificate
2008-01-22
2008-01-22
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With envelope
Having base and connector
C313S317000, C313S318010
Reexamination Certificate
active
07321190
ABSTRACT:
An arc tube is formed by a glass tube that is turned at a substantially middle thereof and wound around a spiral axis from the middle, to have a double-spiral structure. End portions of the arc tub are wound around the spiral axis. A holder has insertion openings formed therein in such shapes that correspond to shapes of the ends of the arc tube. The insertion openings allow the ends of the arc tube to be inserted along a bottom wall of the holder. The holder also includes guide grooves provided in the areas before the insertion openings in the spiral direction of the ends of the arc tube. The guide grooves allow the end portions of the arc tube to come in contact, and when the arc tube is rotated around the axis, guide the ends of the arc tube to the insertion openings.
REFERENCES:
patent: 5675215 (1997-10-01), Watson et al.
patent: 5731656 (1998-03-01), Greiler et al.
patent: 2002/0105255 (2002-08-01), Bankuti et al.
patent: 0735569 (1996-01-01), None
patent: 1 182 688 (2002-02-01), None
patent: 8-339780 (1996-12-01), None
patent: WO 03/083360 (2003-10-01), None
Iida Shiro
Itaya Kenji
Kakuno Yoshinori
Nakanishi Akiko
Matsushita Electric - Industrial Co., Ltd.
Patel Nimeshkumar D.
Won Bumsuk
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