Patent · US Expired

Vibration pickup and an insulating disk for a vibration pickup

US6739182B2 · kind B2 · utility

5Cited by

9References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Mueller · Rutesheim, DE
Wolfgang Schmidt
Holger Krebs · Erdmannhausen, DE
Hartmut Brammer · Leinfelden, DE

Key dates

Filing date	Sep 17, 2002
Grant date	May 25, 2004
Priority date	—
Expiry date	Sep 17, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01N2291/02872
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A vibration sensor for direct or indirect mounting on a vibrating component such as an engine block. The vibration sensor has a housing and a pressure sleeve, which includes a central bore, a cylindrical area and a flange-like edge. A piezoelectric disk is situated between two contact disks. A seismic mass acts on piezoelectric disk by way of a spring element and a threaded ring. Insulating disks are situated on the sides of the contact disks facing away from the piezoelectric disk. The insulating disks have an inside diameter that is less than an outside diameter of the cylindrical area of the pressure sleeve.

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