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:
Jul. 14, 2009
Filed:
Sep. 08, 2003
Koji Sahashi, Iwata, JP;
Koichi Okada, Iwata, JP;
Masatoshi Mizutani, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A wireless sensor system of the present invention includes wireless sensor units (A,B) and a sensor signal receiving unit (). The sensor units (A,B) have sensors (A,B), an electric power receiver (A,B) for securing the electric power from an electromagnetic wave of a power feeding frequency fthrough a tuning circuit and a detecting and rectifying circuit, and sensor signal transmitters (A,B) for transmitting the signals outputted from the sensors as a wireless sensor signal of the electromagnetic wave of unique frequencies fand fdifferent from the power feeding frequency f. The sensor signal receiving unit () has an electric power transmitter () for transmitting the electromagnetic wave of the power feeding frequency fto the units (A,B) and a sensor signal receiver () for receiving wireless the sensor signals of the respective frequencies fand ftransmitted from the units (A,B).