Patent · US Active

Method for detecting a substance

US11413717B2 · kind B2 · utility

0Cited by

10References

23Claims

0Family size

Assignees

FELDER KG · AT
Technische Universität Wien · AT

Inventors

Thomas Weiler · Wien, AT
Helmut Caudr · Wien, AT
Friedrich Bleicher · Wien, AT

Key dates

Filing date	Oct 1, 2018
Grant date	Aug 16, 2022
Priority date	—
Expiry date	Nov 25, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01V3/08
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method is provided for detecting a substance, preferably human tissue, in the vicinity of a mobile tool, wherein the substance to be detected has different electrical characteristics from a material that can be processed by the mobile tool. In the method, a change is detected in a capacitance formed by the tool and a counter electrode that is electrically insulated from the tool. A periodic change in the capacitance is detected and the change is produced by the presence of the substance in a region in relation to the tool and by a periodic change in a geometrical characteristic of the tool in this region as the tool moves.

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