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:
Apr. 29, 2025
Filed:
Jun. 29, 2022
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Takayuki Yonemura, Suwa, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 1/16 (2005.12); B25J 13/08 (2005.12); G01L 5/00 (2005.12); H10N 30/30 (2022.12);
U.S. Cl.
CPC ...
G01L 1/16 (2012.12); B25J 13/085 (2012.12); G01L 5/009 (2012.12); H10N 30/302 (2023.01);
Abstract
A piezoelectric sensor includes an elastic body, a piezoelectric element which is disposed at a position where the piezoelectric element has contact with the elastic body, and which is configured to output a voltage signal when deforming in accordance with a deformation of the elastic body, and a detector configured to detect the voltage signal output from the piezoelectric element, wherein the detector detects kinetic frictional force generated between the object and the elastic body based on a variation in the voltage signal due to the relative movement of the object to the elastic body.