Patent · US Active

Electrical heater for heating substantially cylindrical objects

US8278608B2 · kind B2 · utility

1Cited by

5References

22Claims

0Family size

Assignee

Gunther Heisskanaltechnik GmbH · DE

Inventors

Herbert Gunther · Allendorf (Eder), DE
Siegrid Sommer · Frankenberg, Hesse, DE
Frederic Zimmermann · Frankenberg, Hesse, DE

Key dates

Filing date	Jul 21, 2008
Grant date	Oct 2, 2012
Priority date	—
Expiry date	Sep 6, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2045/2746
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to an electric heater (22) to heat substantially cylindrical objects (12), in particular hot runner nozzles (10) of hot runner systems, essentially being fitted with at least one cylindrical support and with at least one heating conductor track (28) deposited on the support (12). To reduce premature failure of the heater, the invention stipulates that each heating conductor track (28) runs substantially in the axial direction (A) of said support (12), the heating conductor tracks (28) being connected to each other by conductor tracks (30) of lower electrical resistance and each conductor track (30) running essentially in the tangential direction (T) of the support (12).

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