Patent · US Active

Capacitive proximity switch, and domestic appliance equipped with the same

US7777502B2 · kind B2 · utility

15Cited by

2References

17Claims

0Family size

Assignee

BSH Bosch und Siemens Hausgeräte GmbH · DE

Inventors

Jörg Grosser · Lappersdorf, DE
Wilfried Klopfer · Regensburg, DE
Bernward Reinker · Regenstauf, DE
Hans-Jürgen Romanowski · Bernhardswald, DE

Key dates

Filing date	Aug 17, 2006
Grant date	Aug 17, 2010
Priority date	—
Expiry date	Jun 22, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/960765
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A capacitive proximity switch has an electrically conductive sensor surface, which is covered by an electrically non-conductive covering plate and which serves as a part of a capacitor with a capacitance that varies with proximity. A household appliance is equipped with a proximity switch of this type. The sensor surface has an active shielding, which is formed by a shielding surface to which a clock signal is applied at the same time as it is applied to the sensor surface.

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