Patent · US Active

Thermal protection device

US11482354B2 · kind B2 · utility

1Cited by

4References

12Claims

0Family size

Assignee

TDK Electronics AG · JP

Inventors

Wen Yang · Tangxia, CN
Xiaojia Tian · Zhuhai, CN
Zhouquan He · Zhuhai, CN
Yongde Huang · Zhuhai, CN

Key dates

Filing date	Apr 3, 2019
Grant date	Oct 25, 2022
Priority date	—
Expiry date	Jul 27, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH01T1/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In an embodiment a thermal protection device includes a housing, a varistor partly embedded in the housing, wherein the housing electrically insulates the varistor, and wherein the varistor includes a partly uninsulated contact surface, an inner wall of insulating material arranged adjacent to the contact surface of the varistor, a window in the inner wall configured to allow an electrical connection of the contact surface of the varistor in an operational state of the thermal protection device and a moveable insulation block configured to cover the window in the inner wall to insulate the varistor in a region of the window of the inner wall in a fault state of the thermal protection device.

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