Patent Number: 8,797,048

Title: Capacitive rotation sensor

Abstract: A capacitive rotation sensor for detecting the position of an object moving relative to a stationary object, comprising a shaft rotatably supported in a housing flange, said shaft being connected integral in rotation therewith to a rotor to which, separated by an air gap, a stator situated opposite thereto is assigned, wherein at least the rotor, the stator and an evaluation circuit are enclosed by an electrically conductive cap, wherein a stator surface is arranged on the underside of a circuit board and the stator surface has assigned thereto, situated opposite thereto and separated by the air gap, a non-rotation-symmetrical rotor disc which, in turn, is fixed on a rotor support, said rotor support being fastened highly precisely on the outer periphery of the shaft so as to be integral in rotation therewith.

Inventors: Held; Siegfried (Donaueschingen, DE), Buecher; Johann (Aldingen, DE), Woehrstein; Andreas (Koenigsfeld, DE)

Assignee: Hengstler GmbH

International Classification: G01R 27/26 (20060101)

Expiration Date: 8/05/12018