Patent · US Expired

Sensor for measuring the difference between the velocity of a cylinder and a piston in a dashpot

US5451870A · kind A · utility

3Cited by

7References

6Claims

0Family size

Assignee

August Bilstein GmbH & Co. KG · DE

Inventors

Ludger Gesenhues · Witten, DE
Reinhard Holscher · Salzkotten, DE
Hans Hoffmann
Zhen Huang · Longbeilingcun, CN
Klaus Schmidt · Eibelstadt, DE

Key dates

Filing date	Aug 7, 1992
Grant date	Sep 19, 1995
Priority date	—
Expiry date	Aug 7, 2012

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F2230/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A sensor for measuring the difference between the velocity and/or position of a vibration-suppressing cylinder and that of a piston connected to a piston rod and moving back and forth inside the cylinder in a dashpot for motor vehicles. The sensor consists of a permanent magnet and of a winding in the form of a cylindrical coil and operating in conjunction with the magnet. The magnet is connected directly or indirectly to one of the mutually moving components and the winding is connected directly or indirectly to the other. The component that the magnet (5) rests against and the component that the winding (7) rests against constitute a complete circuit that carries the magnet's field.

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