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:
Apr. 15, 2008
Filed:
Mar. 07, 2005
Gianni Trionfetti, Agrate Brianza, IT;
Andrea Guidotti, Carugate, IT;
Gianni Trionfetti, Agrate Brianza, IT;
Andrea Guidotti, Carugate, IT;
Balance Systems S.r.l., Milan, IT;
Abstract
A precision sensor assembly for rotating members in a machine tool comprises a rotor unit () rigidly fixed to a rotor portion () of the machine tool and including a sensor () for detecting vibrations produced by the operation of the machine tool, the sensor () comprising a piezoelectric sensitive element () and members () for mechanical amplification of the vibrations. The members () comprise at least one resonant system composed of an elastic element () and a counter-mass () acting on the piezoelectric sensitive element (). The rotor and stator units () comprise inductively coupled transmitting and receiving elements () for transferring the signals from the piezoelectric element () contactless to the stator unit (). The stator unit () may include an electric amplifier () for further amplifying the transmitted signals.