Optics: image projectors – Lens support
Reexamination Certificate
2005-03-29
2005-03-29
Mahoney, Christopher (Department: 2851)
Optics: image projectors
Lens support
C348S749000, C313S035000, C277S644000, C277S647000
Reexamination Certificate
active
06871962
ABSTRACT:
A one piece, double gland, quad lobe design gasket system for use in a projection system that redundantly seals in the liquid present in a coupler supporting a projection lens in alignment with a projection optical signal generation device (e.g., a Cathode Ray Tube). The coupler defines a cooling chamber between said projection lens and said projection signal generating device and is filled with liquid in order to transport the optical signal between the projection optical signal generation device and projection lens while minimizing contrast distortion. In order to prevent leaking from the cooling chamber between the coupler and projection signal generation device, an improved sealing system is used by providing two separate channels in the coupler and using the integral double gland, quad lobe gasket. Each gland is placed in a corresponding groove in the coupler thus creating two separate lines of seal that keeps the liquid in the coupler from leaking out. The integral redundant dual gland system also prevents air from leaking into the sealed liquid chamber preventing contrast distortion. The coupler with bubble trap is used for example in projection televisions.
REFERENCES:
patent: 3507505 (1970-04-01), Jirka et al.
patent: 4151554 (1979-04-01), Tucker
patent: 4409515 (1983-10-01), Kloss
patent: 4433962 (1984-02-01), Kloss
patent: 4626734 (1986-12-01), Greiler
patent: 4645966 (1987-02-01), Van Esdonk
patent: 4673841 (1987-06-01), Miyatake et al.
patent: 4688093 (1987-08-01), Van der Staak et al.
patent: 4710820 (1987-12-01), Roberts
patent: 4734613 (1988-03-01), Gerritsen et al.
patent: 4775817 (1988-10-01), Duwaer et al.
patent: 4781870 (1988-11-01), Talbert
patent: 4904054 (1990-02-01), Hiroshima
patent: 4964695 (1990-10-01), Bradley, Jr.
patent: 5157554 (1992-10-01), Kashihara
patent: 5250968 (1993-10-01), Numata et al.
patent: 5349472 (1994-09-01), Terai et al.
patent: 5381189 (1995-01-01), Terai et al.
patent: 5506629 (1996-04-01), Kawahara et al.
patent: 5537167 (1996-07-01), Toide et al.
patent: 5652680 (1997-07-01), Kashihara et al.
patent: 5892627 (1999-04-01), Duggan
patent: 6093998 (2000-07-01), Takezawa
patent: 6104554 (2000-08-01), Bodurek, Jr. et al.
patent: 6115082 (2000-09-01), Rudolph
patent: 6130497 (2000-10-01), Takezawa et al.
patent: 6188165 (2001-02-01), Lee
patent: 6268458 (2001-07-01), Soane et al.
patent: 6304378 (2001-10-01), Clausen
patent: 6369864 (2002-04-01), Shinobu
patent: 6377319 (2002-04-01), Shinobu
patent: 6407859 (2002-06-01), Hennen et al.
patent: 6441976 (2002-08-01), Okorocha
patent: 6456341 (2002-09-01), Jung
patent: 6761360 (2004-07-01), Hammi
patent: 20020008918 (2002-01-01), Hirata et al.
patent: 20020024639 (2002-02-01), Jung
patent: 20020054246 (2002-05-01), Hong et al.
patent: 20020076181 (2002-06-01), Veligdan
patent: 20020080484 (2002-06-01), Mosfrefzadeh
patent: 20020140332 (2002-10-01), Florek
patent: 20020171929 (2002-11-01), Kim et al.
patent: 20040160580 (2004-08-01), Baker et al.
David Cunningham Hitachi America, Ltd.
Hitachi Electronic Devices, Inc.
Mahoney Christopher
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