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:
Jan. 13, 2026
Filed:
Aug. 17, 2022
Applicant:
Koganei Corporation, Koganei, JP;
Inventor:
Takeo Yajima, Tokyo, JP;
Assignee:
KOGANEI CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 1/14 (2020.01); F04B 1/146 (2020.01); F04B 1/16 (2006.01);
U.S. Cl.
CPC ...
F04B 1/146 (2013.01); F04B 1/16 (2013.01);
Abstract
A liquid supply devicehas a pump unitin which a plurality of pump members are provided; a housingin which a plurality of drive rods for driving the pump members are integrated; a drive rollerwhich rotation about a center rotation axis in a direction lateral to a reciprocation direction of the driving rod; a cam memberon whose end surface a cam surfacecontacted with the drive rolleris provided; a magnetprovided on an outer peripheral portion of the cam member; and a magnetic sensorthat senses a magnetic field of the magnetto output a rotation signal.