The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2004
Filed:
Sep. 17, 2002
Wolfgang-Michael Mueller, Rutesheim, DE;
Wolfgang Schmidt, Vaihingen, DE;
Holger Krebs, Erdmannhausen, DE;
Hartmut Brammer, Vaihingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
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.