Photography – Disposable or recyclable camera
Reexamination Certificate
2006-07-25
2006-07-25
Mahoney, Christopher (Department: 2851)
Photography
Disposable or recyclable camera
C396S198000
Reexamination Certificate
active
07082263
ABSTRACT:
A flash device for a lens-fitted photo film unit pre-loaded with unexposed photo film is provided. A main capacitor stores charge. A flash emitter emits flash light. A flash circuit board charges the main capacitor, and drives the flash emitter by discharging the main capacitor in response to an exposing operation. A tightly closed flash case is secured to the lens-fitted photo film unit, for containing the main capacitor, the flash emitter and the flash circuit board. Also, the lens-fitted photo film unit includes a sync switch for generating a trigger signal in response to the exposing operation. Two switch contact points are disposed outside the flash case, for receiving the trigger signal from the sync switch. The two switch contact points disable discharge of the main capacitor while the flash case is away from the lens-fitted photo film unit, and are short-circuited for discharge of the main capacitor upon supply of the trigger signal while the flash case is secured to the lens-fitted photo film unit.
REFERENCES:
patent: 3783757 (1974-01-01), Wagner et al.
patent: 3943532 (1976-03-01), De Filippis
patent: 3969736 (1976-07-01), Lehmann
patent: 4406533 (1983-09-01), Yamamoto
patent: 4801957 (1989-01-01), Vandemoere
patent: 5003330 (1991-03-01), Kotani et al.
patent: 5079584 (1992-01-01), Nakamura
patent: 5172031 (1992-12-01), Matsui et al.
patent: 6044227 (2000-03-01), Hata
patent: 6351608 (2002-02-01), Constable
patent: 6466741 (2002-10-01), Uchiyama
patent: 6608969 (2003-08-01), Schroder
patent: 2003/0034693 (2003-02-01), Wareham et al.
patent: 7-120883 (1995-05-01), None
Iida Akihisa
Kamata Kazuo
Kameyama Nobuyuki
Kubota Takeshi
Ogawa Jun
Fuji Photo Film Co. , Ltd.
Mahoney Christopher
Young & Thompson
LandOfFree
Lens-fitted photo film unit, flash device, and lens-fitted... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lens-fitted photo film unit, flash device, and lens-fitted..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens-fitted photo film unit, flash device, and lens-fitted... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3599573