Apparatus for sensing the thickness of a moving sheet of film

Details Apparatus for sensing the thickness of a moving sheet of film Apparatus for sensing the thickness of a moving sheet of film

1992-11-12

1993-07-06

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324687, 324690, 324699, 324701, 73159, 73160, 340675, G01B 2108, G01R 2726

Patent

active

052257851

ABSTRACT:
A rotatable capacitance sensor preferably constructed of a generally cylindrical body mounted on bearings to a carriage assembly. The body has a number of parallel, spaced apart conductive plates having edges extending through the exterior body surface, and alternate ones of the plates are connected via a bearing to a conductor in one part of the carriage assembly, and the remaining ones of the plates are connected via a bearing to a second conductor in another part of the carriage assembly.

REFERENCES:
patent: 2870403 (1959-01-01), Lippke
patent: 3657645 (1972-04-01), Van Neuten
patent: 3867691 (1975-02-01), Plessis
patent: 4682105 (1987-07-01), Thorn
patent: 4968947 (1990-11-01), Thorn

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