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:
Jun. 27, 2006
Filed:
Jan. 21, 2003
Valerio Dondi, Castel Maggiore Bo, IT;
Valerio Dondi, Castel Maggiore Bo, IT;
Marposs Societa' per Azioni, Bentivoglio, IT;
Abstract
An acoustic sensor for monitoring machining processes in machining tools, e.g. grinding machines, includes a stationary unit, or stator () and a rotating unit, or rotor (), the latter being coupled, for instance, to the grinding wheel and rotating with it. The rotor includes a support (') and a piezoelectric transducer (). The position of the transducer is defined and locked without using glues by means of mechanical elements () that may include elastic elements such as springs. The rotor also includes a printed circuit board (), connected to the piezoelectric transducer, with a charge amplifier () for amplifying the output signal of the piezoelectric transducer. The rotor is electrically coupled to the stator by means of transformer type couplings ().