Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers
Reexamination Certificate
2004-12-07
2009-08-25
Vu, David Hung (Department: 2821)
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Flashers
C315S224000, C315S291000
Reexamination Certificate
active
07579782
ABSTRACT:
A portable rechargeable electronic device, such as a flashlight, with external charging contacts and a short protection circuit is disclosed. The short protection circuit electrically uncouples one of the exposed charging contacts from the rechargeable power supply for the device when the charging contacts are short circuited. The charging contact is uncoupled without opening the power circuit for the device; thus, the device can continue to operate while the charging contacts are shorted. The power supply for the device may be a rechargeable lithium-ion battery pack. A flashlight with a circuit for reducing the initial surge of current that is sent through the lamp filament when a flashlight is turned on is also provided. The circuit reduces the stresses placed on the lamp bulb when it is turned on, thereby extending the life expectancy of the lamp bulb. A flashlight with an electronic switch is also disclosed.
REFERENCES:
patent: 2876410 (1959-03-01), Fry
patent: 3281637 (1966-10-01), Hultquist
patent: 3521050 (1970-07-01), Shagena, Jr.
patent: 3825740 (1974-07-01), Friedman et al.
patent: 3829676 (1974-08-01), Nelson et al.
patent: 3835272 (1974-09-01), Wisenbaker
patent: RE29047 (1976-11-01), Brindley
patent: 4092580 (1978-05-01), Prinsze
patent: 4114187 (1978-09-01), Uke
patent: 4115842 (1978-09-01), Keller
patent: 4126810 (1978-11-01), Cox
patent: 4139794 (1979-02-01), Malm et al.
patent: 4171534 (1979-10-01), Strowe
patent: 4194143 (1980-03-01), Farkas et al.
patent: 4203150 (1980-05-01), Shamlian
patent: 4244011 (1981-01-01), Hammel et al.
patent: 4286311 (1981-08-01), Maglica
patent: 4325107 (1982-04-01), MacLeod
patent: 4327401 (1982-04-01), Siiberg
patent: 4357648 (1982-11-01), Nelson
patent: 4357651 (1982-11-01), Mayer
patent: 4388673 (1983-06-01), Maglica
patent: 4398139 (1983-08-01), Prinsze
patent: 4398232 (1983-08-01), Elmore
patent: 4398238 (1983-08-01), Nelson
patent: 4429351 (1984-01-01), Petzl et al.
patent: 4479191 (1984-10-01), Nojima et al.
patent: 4514790 (1985-04-01), Will
patent: 4531178 (1985-07-01), Uke
patent: 4577263 (1986-03-01), Maglica
patent: 4605993 (1986-08-01), Zelina
patent: 4656565 (1987-04-01), Maglica
patent: 4658336 (1987-04-01), Maglica
patent: 4819141 (1989-04-01), Maglica et al.
patent: 4823242 (1989-04-01), Maglica et al.
patent: 4843298 (1989-06-01), Brauch et al.
patent: 4873160 (1989-10-01), Miyazaki et al.
patent: 4885668 (1989-12-01), Maglica et al.
patent: 4899265 (1990-02-01), Maglica
patent: 4914555 (1990-04-01), Gammache
patent: 4922178 (1990-05-01), Matuszewski et al.
patent: 4999750 (1991-03-01), Gammache
patent: 5003440 (1991-03-01), Maglica
patent: 5008785 (1991-04-01), Maglica et al.
patent: 5121308 (1992-06-01), Maglica et al.
patent: 5193898 (1993-03-01), Maglica et al.
patent: 5260858 (1993-11-01), Maglica
patent: 5267130 (1993-11-01), Maglica et al.
patent: 5390091 (1995-02-01), Maglica
patent: 5455752 (1995-10-01), Maglica et al.
patent: 5528472 (1996-06-01), Maglica et al.
patent: 5560705 (1996-10-01), Shiau
patent: 5806964 (1998-09-01), Maglica
patent: 5821697 (1998-10-01), Weber
patent: 5833354 (1998-11-01), Maglica
patent: 5836672 (1998-11-01), Maglica et al.
patent: 5859506 (1999-01-01), Lemke
patent: 6086219 (2000-07-01), Maglica et al.
patent: 6206541 (2001-03-01), Landamia
patent: 6246184 (2001-06-01), Salerno
patent: 6249089 (2001-06-01), Bruwer
patent: 6283609 (2001-09-01), Parsons et al.
patent: 6296367 (2001-10-01), Parsons et al.
patent: 6296368 (2001-10-01), Maglica et al.
patent: 6316911 (2001-11-01), Moskowitz et al.
patent: 6347878 (2002-02-01), Shiao
patent: 6357893 (2002-03-01), Belliveau
patent: 6457840 (2002-10-01), Maglica et al.
patent: 6488390 (2002-12-01), Lebens et al.
patent: 6563269 (2003-05-01), Robinett et al.
patent: 6621225 (2003-09-01), Bruwer
patent: 7015654 (2006-03-01), Kuhlmann et al.
patent: 7265494 (2007-09-01), Bruwer
patent: 7291940 (2007-11-01), Bruwer
patent: 2003/0057875 (2003-03-01), Inochkin et al.
patent: 2004/0021427 (2004-02-01), Bruwer et al.
patent: 2004/0085026 (2004-05-01), Inochkin et al.
patent: 2005/0002186 (2005-01-01), Krieger et al.
patent: 2005/0007777 (2005-01-01), Klipstein et al.
patent: 2005/0040773 (2005-02-01), Lebens et al.
patent: 2005/0047125 (2005-03-01), Puckett
patent: 2005/0083626 (2005-04-01), Bruwer
patent: 2005/0083683 (2005-04-01), Ho et al.
patent: 2005/0088843 (2005-04-01), Chapman
patent: 2005/0168158 (2005-08-01), Inochkin et al.
patent: 2005/0174782 (2005-08-01), Chapman
patent: 2006/0028811 (2006-02-01), Ross et al.
patent: 2006/0082321 (2006-04-01), Van Deursen et al.
patent: WO/00/22890 (2000-04-01), None
Jones Day
Le Tung X
Mag Instrument Inc.
Vu David Hung
LandOfFree
Circuitry for portable lighting devices and portable... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuitry for portable lighting devices and portable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuitry for portable lighting devices and portable... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4091218