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:
Jun. 29, 2004
Filed:
Jul. 11, 2002
Atsushi Komatsu, Osaka, JP;
Masayuki Okano, Kawanishi, JP;
Katsumi Imada, Nara, JP;
Toru Ninomiya, Yawata, JP;
Yusuke Adachi, Toyonaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A miniature pump includes a miniature pump portion including a suction passage through which a liquid flows in, and a discharge passage through which the liquid flows out, and a bubble trap portion for blocking an entry of air bubbles into the miniature pump portion. Since the bubble trap portion prevents the entry of air bubbles into the miniature pump portion, a deterioration of pump characteristics owing to the entry of air bubbles can be suppressed, making it possible to obtain a miniature pump that achieves both a large discharge flow rate and stable discharge flow rate characteristics.