Patent · US Active

Plasma insensitive height sensing

US8373425B2 · kind B2 · utility

1Cited by

13References

25Claims

0Family size

Assignee

Hypertherm, Inc. · US

Inventors

Sanjay Garg · Savanuru, IN
William J. Connally · Lebanon, US

Key dates

Filing date	Apr 4, 2008
Grant date	Feb 12, 2013
Priority date	—
Expiry date	Jul 7, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG01B7/14
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining a distance between a first piece and a second piece includes measuring, at the first or second piece, an AC signal, and determining the distance based on the measured AC signal. A system for determining a distance between a first piece and a second piece includes a measuring device adapted to measure, at one or both of the first and second piece, an AC signal, and a signal processing device adapted to determine the distance based on the measured AC signal. The AC signal includes a DC offset.

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