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. 14, 2021
Filed:
May. 08, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Eiji Osawa, Chino, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 7/12 (2006.01);
U.S. Cl.
CPC ...
B65H 7/125 (2013.01); B65H 2511/13 (2013.01); B65H 2553/30 (2013.01); B65H 2553/822 (2013.01);
Abstract
A multi-feed detection device includes a transmission circuit substrate to which an ultrasonic transmitter transmitting an ultrasonic wave is installed, and an ultrasonic receiver receiving the ultrasonic wave. The ultrasonic transmitter has arrayed ultrasonic transmission elements and transmits ultrasonic waves with different phases from the ultrasonic transmission elements to transmit the ultrasonic waves in a direction diagonally intersecting a thickness direction of the transmission circuit substrate.