Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2006-07-11
2006-07-11
Patidar, Jay M. (Department: 2862)
Electricity: measuring and testing
Magnetic
Displacement
C324S207160, C324S239000
Reexamination Certificate
active
07075293
ABSTRACT:
An inductive measurement is carried out of the distance between a workpiece (3) and a working head (1), which bears an induction coil (8), through which an alternating current flows and which is part of a resonance circuit whose oscillation frequency is monitored for changes which occur as a consequence of changes in the distance between the workpiece (3) and working head (1). In this case, the working head (1) acts on the workpiece (3) with a material (2) having a dielectric constant greater than 1. The frequency of the alternating current is in the megahertz region or just therebelow. Last but not least, the induction coil is screened from external electric fields in order to avoid the influence of parasitic capacitances.
REFERENCES:
patent: 3996510 (1976-12-01), Guichard
patent: 4001718 (1977-01-01), Wilson et al.
patent: 4004216 (1977-01-01), Natens et al.
patent: 4012690 (1977-03-01), Heytow
patent: 4646011 (1987-02-01), Wallrafen
patent: 4991301 (1991-02-01), Hore
patent: 5498958 (1996-03-01), Tu et al.
patent: 5811664 (1998-09-01), Whittington et al.
patent: 4212652 (1993-10-01), None
patent: G9412765.4 (1994-11-01), None
Spörl Georg
Walz Jürgen
Birch,Stewart,Kolasch & Birch,LLP
Patidar Jay M.
Precitec GmbH
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