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. 25, 1999
Filed:
May. 22, 1996
Kazuki Ogawa, Kawasaki, JP;
Yuji Yoshida, Kawasaki, JP;
Motoyuki Nishizawa, Kawasaki, JP;
Nobuo Kamehara, Kawasaki, JP;
Akio Yano, Inagi, JP;
Akihiko Miyaki, Inagi, JP;
Masahiro Ono, Inagi, JP;
Yasuo Numata, Kawasaki, JP;
Kazuaki Kurihara, Kawasaki, JP;
Keiji Watanabe, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Fujitsu Isotec Limited, Tokyo, JP;
Abstract
A piezoelectric fluid pump includes a stationary pump base and a plurality of piezoelectric elements arranged in parallel on the stationary pump base, each of the piezoelectric elements having, in a polarizing direction thereof or in a direction perpendicular to the polarizing direction, a first end fixed to the stationary pump base and a free, second end. The free, second ends of respective pairs of adjacent the piezoelectric elements are connected to each other, for respective units of the fluid pump. Between the pair of piezoelectric elements and between the stationary pump base and the connecting means, pressure chambers are defined. There are gaps are between walls of the piezoelectric elements and walls of piezoelectric elements of adjacent units.