Patent · US Expired

Compound body and method for manufacturing it

US7569799B2 · kind B2 · utility

1Cited by

4References

36Claims

0Family size

Assignee

Gunther GmbH & Co., Metallverarbeitung · DE

Inventors

Herbert Gunther · Allendorf (Eder), DE
Christel Kretschmar · Heidenau, DE
Uwe Partsch · Dresden, DE
Peter Otschik · Rabenau, DE

Key dates

Filing date	Oct 13, 2003
Grant date	Aug 4, 2009
Priority date	—
Expiry date	May 13, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.