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. 07, 2020
Filed:
Dec. 13, 2018
Applicant:
Toshiba Tec Kabushiki Kaisha, Shinagawa-ku, Tokyo, JP;
Inventor:
Kazuhiko Ohtsu, Mishima Shizuoka, JP;
Assignee:
TOSHIBA TEC KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01); B41J 2/045 (2006.01); B41J 2/14 (2006.01); B41J 2/18 (2006.01); B41J 29/38 (2006.01);
U.S. Cl.
CPC ...
B41J 2/17596 (2013.01); B41J 2/04581 (2013.01); B41J 2/14201 (2013.01); B41J 2/14233 (2013.01); B41J 2/18 (2013.01); B41J 29/38 (2013.01); B41J 2/04541 (2013.01); B41J 2202/12 (2013.01);
Abstract
In accordance with an embodiment, a diaphragm pump comprises a main liquid chamber; a main actuator configured to change a volume of the main liquid chamber; a sub liquid chamber configured to communicate with a primary side or a secondary side of the main liquid chamber; a sub actuator configured to change a volume of the sub liquid chamber; a first check valve provided on the primary side of the main liquid chamber; a second check valve provided on the secondary side of the main liquid chamber; and a controller configured to control the main actuator and the sub actuator.