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. 20, 2025
Filed:
Mar. 09, 2023
Applicant:
Nitto Kohki Co., Ltd., Tokyo, JP;
Inventor:
Kousei Houguchi, Tokyo, JP;
Assignee:
NITTO KOHKI CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 49/02 (2006.01); F04B 17/03 (2006.01); H02K 5/04 (2006.01); H02K 7/14 (2006.01); H02K 11/25 (2016.01);
U.S. Cl.
CPC ...
F04B 49/02 (2013.01); F04B 17/03 (2013.01); H02K 5/04 (2013.01); H02K 7/14 (2013.01); H02K 11/25 (2016.01); F04B 2203/0405 (2013.01);
Abstract
The pump has an electromagnet for reciprocating a piston, and a first casing member at least partially accommodating the piston and the electromagnet. The electromagnet has a stator core and coils wound around the stator core. The pump further includes a thermal protector disposed on the stator core. The thermal protector is held between the casing member and the stator core. When the thermal protector detects that the stator core has heated up above a predetermined temperature, the supply of electric power to the electromagnet is interrupted to stop the drive of the piston.