Patent · US Expired

Sensor device

US6291988A · kind A · utility

3Cited by

4References

7Claims

0Family size

Assignee

Leopold KOSTAL GmbH & Co. KG · DE

Inventors

Frank A. Hagen · Rancho Palos Verdes, US
Klaus Hinteresch · Schwerte, DE
Arno Laubrock · Dortmund, DE

Key dates

Filing date	Apr 18, 2000
Grant date	Sep 18, 2001
Priority date	—
Expiry date	Apr 18, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60G2400/252
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor device for continuous measurement of the position of a damping piston in a damping cylinder of a vibration damper, used, in particular, in the spring strut of a motor vehicle, is proposed. The corresponding electronic control and evaluation circuit of such a sensor device is to be located in the immediate vicinity of the sensor element and in particular, the problems related to this measure, involving the sealing of the electronic circuit, with respect to the harsh conditions of the corresponding building space, are solved. This is possible in that the sensor element and the electronic control and evaluation circuit are placed within a damping piston, consisting of a basic body and a cover, and are hermetically enclosed, with respect to the outside, by a surrounding seal, lying between the basic body and the cover of the damping piston.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.