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:
Nov. 15, 2022

Filed:

Mar. 25, 2020
Applicant:

Nabtesco Corporation, Tokyo, JP;

Inventors:

Kazuhiko Sakurai, Tokyo, JP;

Masaki Harada, Tokyo, JP;

Koki Akai, Tokyo, JP;

Shuichi Kamagata, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 27/07 (2006.01); G01N 33/28 (2006.01);
U.S. Cl.
CPC ...
G01N 27/07 (2013.01); G01N 33/2888 (2013.01);
Abstract

A sensor relating to one embodiment of the present invention includes a first electrode, a second electrode, an attracting portion arranged between the first electrode and the second electrode, where the attracting portion attracts conductive particles smaller than a gap between the first electrode and the second electrode to cause a change in electrical resistance between the first electrode and the second electrode, and a short circuit preventing portion for preventing a large-diameter conductive piece from causing a short circuit between the first electrode and the second electrode, where the large-diameter conductive piece has a larger dimension than the gap between the first electrode and the second electrode.


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