Electric lamp and discharge devices – Incandescent lamps – Plural filaments or glowers
Reexamination Certificate
2009-09-11
2011-12-06
Patel, Nimeshkumar (Department: 2879)
Electric lamp and discharge devices
Incandescent lamps
Plural filaments or glowers
C313S318020, C313S271000, C313S272000, C313S273000, C313S275000
Reexamination Certificate
active
08072128
ABSTRACT:
To provide the structure of a filament lamp having a plurality of independent power supply pathways, the structure being capable of preventing the power supply pathways from electrically shorting to each other, a filament lamp formed of a straight-tube shaped luminous part having multiple filaments (F1, F2, F3) divided in the axial direction, and sealing parts (20) on each of opposite ends of the luminous part (10) in which are embedded metal foils (31, 32, 33) corresponding to the number of filaments in an aligned manner, and leads for supplying electricity independently to each filament, the luminous part (10) having a first housing space (11) for housing the filaments and a second housing space (12) for housing the leads (51, 52, 53), the housing spaces be connected and extending in the axial direction.
REFERENCES:
patent: 5686794 (1997-11-01), Streppel et al.
patent: 6713945 (2004-03-01), Fuchs et al.
patent: 7639930 (2009-12-01), Mizukawa et al.
patent: 2006/0197454 (2006-09-01), Mizukawa et al.
patent: 2008/0203924 (2008-08-01), Kitagawa et al.
patent: 2009/0103905 (2009-04-01), Tanino et al.
patent: 2009/0243456 (2009-10-01), Tanino et al.
patent: 2010/0072876 (2010-03-01), Nakashima et al.
patent: 1 344 753 (2003-09-01), None
patent: 1 998 358 (2008-12-01), None
Mizukawa Yoichi
Tanino Kenji
Bowman Mary Ellen
Patel Nimeshkumar
Roberts Mlotkowski Safran & Cole P.C.
Safran David S.
Ushiodenki Kabushiki Kaisha
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