Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Reexamination Certificate
2008-07-29
2008-07-29
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
C313S493000
Reexamination Certificate
active
07405520
ABSTRACT:
A curved lamp manufacturing method including a curving process in which a straight glass tube sealed with reduced pressure inside is heated and curved. The curving process includes: a first step of holding a predetermined portion of the glass tube using a first chuck, and holding one end portion of the glass tube using a second chuck such that the second chuck can slide in a longitudinal direction of the glass tube; and a second step of, while heating a planned curved portion of the glass tube positioned between the predetermined portion and the end portion by a heater, curving the planned curved portion by moving the second chuck relative to the glass tube. The end portion is moved in the second step so that a weight of the end portion is applied to the planned curved portion that has been softened by the heater.
REFERENCES:
patent: 4298822 (1981-11-01), Fukuda
patent: 4481442 (1984-11-01), Albrecht et al.
patent: 7285899 (2007-10-01), Nishimura et al.
patent: 2005/0258758 (2005-11-01), Boehme
patent: 57-152791 (1982-09-01), None
patent: 59-153330 (1984-10-01), None
patent: 03-187937 (1991-08-01), None
patent: 06-243782 (1994-09-01), None
patent: 2002-187730 (2002-07-01), None
Kameyama Hayato
Kikuchi Akio
Mino Yoshimitsu
Ueno Hironobu
Yanata Takaharu
Matsushita Electric - Industrial Co., Ltd.
Patel Nimeshkumar D.
Perry Anthony T
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