Patent · US Active

Insert and a heater element for electrical furnaces

US8565283B2 · kind B2 · utility

0Cited by

10References

5Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventor

Thomas Lewin · Hallstahammar, SE

Key dates

Filing date	Jan 2, 2008
Grant date	Oct 22, 2013
Priority date	—
Expiry date	Jan 2, 2028

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D2099/0008
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

An insert intended for electrical furnaces and of the type that includes an insulating shell having an outside and an inside having a rotationally symmetrical, e.g., cylindrical shape, and a heater element that is arranged inside the insulating shell and extends several turns in a continuous loop having an overall shape corresponding to the rotationally symmetrical shape of the insulating shell. The continuous loop includes spaced-apart bends, which divide the same into individual sections of limited length to which occurring thermal expansion is isolated locally. In an exemplary embodiment, the bends are U-shaped to impart to the continuous loop a meander shape. Another exemplary embodiment relates to a heater element.

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