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:
Mar. 11, 2008
Filed:
Sep. 29, 2005
Yasuo Koba, Kyoto, JP;
Hirozumi Nakamura, Nara, JP;
Takuhisa Ootani, Nara, JP;
Kazunori Ueyama, Osaka, JP;
Yasuo Koba, Kyoto, JP;
Hirozumi Nakamura, Nara, JP;
Takuhisa Ootani, Nara, JP;
Kazunori Ueyama, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
To provide a flowmeter capable of enhancing metering resolution to thus effect accurate metering. When a fluid to be measured is supplied to or discharged from a metering chamber, a membraneprovided in the metering chamberis reciprocally actuated, and a rotation section Rperforms rotational movement in association with reciprocal movement of the membrane. At this time, since the rotation section Ris provided with a magnetor a direction sensor, the magnetor the direction sensoralso effects rotational movement. The direction sensordetects rotational movement, to thus determine a relative position between the membrane and the rotation section. Thus, the position of the membranecan be detected, and metering resolution is enhanced. Thus, accurate metering can be performed.