Capacitive turn angle indicator

US5315865A · kind A · utility

Assignees

• Diehl GmbH & Co. · DE
• Borg Instruments Verwaltung-GmbH · DE

Inventors

• Rudiger Hornfeck · Betzenstein, DE
• Klaus Bar · Achern, DE
• Josef Nagler · Westerburg, DE
• Manfred Barth · Bad Wildbad, DE

Key dates

• Filing date: Jul 8, 1992
• Grant date: May 31, 1994
• Expiry date: Jul 8, 2012

Classification

• Technology area (CPC G): Physics
• CPC primary: G01D5/2415
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A turn angle indicator or angular displacement indicator and, more particularly, relates to a capacitive turn angle indicator, especially a positioning sensor for a flap or throttle valve, including a supporting plate fastened to the apparatus at a close narrow distance in front of a further supporting plate which is rotatable planar-parallel relative thereto and which is utilized for a mutually oppositely located narrow spoke or sector-shaped electrode pattern, and with a bearing structure for the rotatable supporting plate and which is fastened to the apparatus. The supporting plates are guided relative to each other through the intermediary of compressively-loaded distance spacers which are arranged in the region of the outer edges of the plates which extend in parallel with the axis of rotation of the rotatable plate.