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.

Date of Patent:
Feb. 05, 2013

Filed:

Sep. 04, 2008
Applicant:

Shoji Itomi, Kuwana, JP;

Inventor:

Shoji Itomi, Kuwana, JP;

Assignee:

NTN Corporation, Osaka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 7/00 (2006.01); G01R 33/025 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a sensor of a sensor unit in which working voltage or calibration voltage is supplied through a single input end, working voltage can be stably supplied to the sensor after initial calibration. The sensor unit includes a voltage stabilizing circuit for stabilizing a voltage value of a supply power source to said working voltage, and a wiring for supplying said calibration voltage to the sensor, which are provided parallel to each other between the input end of the sensor and a power source connecting end for the sensor on the circuit board, and a switching portion which can disconnect the wiring, wherein an access hole is formed in the housing through which the switching portion is accessible to disconnect the wiring.


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