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:
May. 04, 2021
Filed:
Aug. 17, 2017
Applicant:
Zero Lab Co., Ltd., Tokyo, JP;
Inventor:
Ritsuo Koga, Tokyo, JP;
Assignee:
ZERO LAB CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09F 9/37 (2006.01); B43L 1/00 (2006.01); G02F 1/09 (2006.01);
U.S. Cl.
CPC ...
G09F 9/375 (2013.01); B43L 1/008 (2013.01); G02F 1/09 (2013.01); G02F 1/094 (2021.01);
Abstract
A magnetic erasing device includes a rotating member provided in an internal space of a cylindrical housing, a first magnet and a second magnet attached to the rotating member, and a motor for driving the rotating member. The first magnet is arranged so that the S pole is exposed and the second magnet is attached so that the N pole is exposed. By rotating the rotating member, the magnetic field generated by the first and second magnets is changed.