Electric heating – Heating devices – With heating unit structure
Reexamination Certificate
2006-07-14
2008-11-04
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
With heating unit structure
C219S444100, C219S465100, C219S467100, C219S468100, C219S468200, C219S448170, C219S451100, C219S452120, C219S453120, C219S453150, C219S460100, C219S461100, C219S541000, C219S544000, C219S552000, C219S553000, C338S322000, C338S323000, C338S324000, C338S240000, C338S241000, C338S326000, C338S328000, C338S329000, C338S330000, C338S332000
Reexamination Certificate
active
07446286
ABSTRACT:
A heater strip for use as a heating element in an electric heater is made up of a profiled strip made of a flat metallic material forming a resistor section and of mounting elements extending over one common longitudinal side and they are manufactured as one piece with the resistor section for mounting the heater strip to a support. The strip has a zigzag-shaped structure. The mounting elements are provided only on the flat leg sections of the zigzag-shaped heater strip.
REFERENCES:
patent: 4161648 (1979-07-01), Goessler
patent: 5834740 (1998-11-01), Wilde et al.
patent: 5892205 (1999-04-01), Wilde et al.
patent: 0 871 346 (1998-04-01), None
patent: 1 011 296 (1998-10-01), None
patent: 1 229 763 (2002-01-01), None
patent: 1229763 (2002-10-01), None
patent: WO 2004/066682 (2004-01-01), None
Auradnik Christian
Reithofer Josef
Electrovac AG
Fuqua Shawntina
Hoffman Wasson & Gitler, P.C.
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