Electric heating – Heating devices – With heater-unit housing – casing – or support means
Reexamination Certificate
2003-10-13
2009-08-04
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
With heater-unit housing, casing, or support means
C219S424000, C219S420000, C219S426000, C219S422000, C219S534000, C219S543000, C219S552000, C219S553000, C427S318000, C428S457000
Reexamination Certificate
active
07569799
ABSTRACT:
A compound body comprises a steel base element on which is deposited a heater layer. The base element is made of a precipitation hardening steel. In the form of a manifold or material feed tube in a hot duct system, said base element comprises a round or convex surface receiving the heater layer. This heater layer is a compound layer having several strata and/or strata elements which are thick film pastes or sheets and in such form are consecutively deposited, dried and baked-on. The pre-compression generated in this process in the heater layer is increased in controlled manner by precipitation hardening the base element.
REFERENCES:
patent: 4713530 (1987-12-01), Schittenhelm et al.
patent: 5312241 (1994-05-01), Gunther
patent: 5973296 (1999-10-01), Juliano et al.
patent: 6069910 (2000-05-01), Eckert
patent: 35 36 268 (1987-04-01), None
patent: 35 45 445 (1987-06-01), None
patent: 199 41 038 (2001-03-01), None
patent: 100 04 072 (2002-07-01), None
patent: 199 08 936 (2002-10-01), None
patent: 9-94911 (1997-04-01), None
patent: WO 00/23245 (2000-04-01), None
Gunther Herbert
Kretschmar Christel
Otschik Peter
Partsch Uwe
Clark & Brody
Fuqua Shawntina
Gunther GmbH & Co. Metallverarbeitung
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