Rotatable capacitance sensor

Details Rotatable capacitance sensor Rotatable capacitance sensor

1992-10-02

1993-06-29

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324699, 324701, 324687, 73159, G01N 2712

Patent

active

052237974

ABSTRACT:
A rotatable capacitance sensor for detecting film thickness of a moving film web, the rotatable sensor having a capacitive element arranged to contact the moving web film, the capacitive element electrically connected to projecting shaft ends of the rotatable sensor, resilient conductors urged against the respective shaft ends, and an electrical shield overlaying the resilient conductors and the rotatable shaft, to electrically isolate shaft wobble from the surrounding housing.

REFERENCES:
patent: 2653298 (1953-09-01), McKinley
patent: 3384815 (1968-05-01), Lyall
patent: 3535631 (1970-10-01), DeGeest
patent: 3657645 (1972-04-01), Van Nueten
patent: 4027238 (1977-05-01), Loch
patent: 4568874 (1986-02-01), Kramer
patent: 4968947 (1990-11-01), Thorn

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