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. 02, 2002
Filed:
May. 03, 2000
Masahiro Hase, Tokyo, JP;
Kiyoshi Takahashi, Edogawa-ku, Tokyo, JP;
Kazuo Takahashi, Edogawa-ku, Tokyo, JP;
Other;
Abstract
An air pump apparatus that can allow easy change of the number of pump mechanisms contained therein and easy connection between the pump mechanisms is disclosed. The air pump apparatus comprises a pump mechanism and a pump case assembly forming an air-tight pump chamber in that the pump mechanism is contained. The pump mechanism comprises: a base frame; mutually opposing first and second diaphragms defining first and second diaphragm chambers on lateral sides of the base frame; electromagnetic drive means for driving the first and second diaphragms; first inlet and outlet ports connected to the first diaphragm chamber; and second inlet and outlet ports connected to the second diaphragm chamber, the second outlet port being in axial alignment with the first inlet port, wherein the first inlet port and the second inlet port of the first pump mechanism are in flow communication with outside of the first pump chamber, and the first outlet port and the second inlet port of the first pump mechanism are in flow communication with the first pump chamber. Preferably, the electromagnetic drive means comprises an electromagnet disposed longitudinally alongside the base frame and a pair of arms which are vibrated substantially symmetrically in accordance with alternation of a magnetic field generated by the electromagnet and connected to the first and second diaphragms respectively. Further preferably, a joint member for securing the pump mechanism(s) in the air pump apparatus is made of electrically conductive material so that electric power is supplied to the electromagnetic drive means of each pump mechanism via the joint member.