Capacitive proximity sensor
US6724324B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Aug 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/960775
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A capacitive sensor including a first electrode that has at least one conducting surface being disposed for receiving an alternating current signal, and a second electrode that has at least one conducting surface being disposed to generate an input signal for a detecting device. The sensor further includes a middle electrode that has at least one conducting surface placed between the first electrode and the second electrode, as well as being grounded to a ground. The at least one conducting surface of the middle electrode, the at least one conducting surface of the first electrode, and the at least one conducting surface of the second electrode are contained within a holding material holding within itself the first electrode, the second electrode and the middle electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.