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:
Sep. 04, 2012
Filed:
Apr. 08, 2009
Silvio Giors, Caselle, IT;
Oriano Bottauscio, Turin, IT;
Mario Chiampi, Turin, IT;
Gabriella Crotti, Turin, IT;
Fausto Fiorillo, Pinerolo, IT;
Silvio Giors, Caselle, IT;
Oriano Bottauscio, Turin, IT;
Mario Chiampi, Turin, IT;
Gabriella Crotti, Turin, IT;
Fausto Fiorillo, Pinerolo, IT;
Agilent Technologies, Inc., Santa Clara, CA (US);
Abstract
A contactless device for measuring at least the temperature of a rotor of a high-speed rotary machine, in particular a turbomolecular vacuum pump, comprises at least one magnetic capsule mounted on the rotor of the pump. The capsule comprises a permanent magnet and at least one pastille of ferromagnetic material having a Curie temperature slightly higher than a maximum temperature to be measured. The magnetic permeability of this material strongly depends on temperature. The pastille is intended to alter the magnetic field generated by the magnet. A detector carried by the stator of the pump generates pulses representative of the magnetic field varying with the rotor temperature, generated by the capsule, whenever the latter passes in front of the detector.