Measuring and testing – Volume or rate of flow – Tank type
Reexamination Certificate
2008-03-11
2008-03-11
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Tank type
Reexamination Certificate
active
11574896
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 chamber4, a membrane11provided in the metering chamber4is reciprocally actuated, and a rotation section R1performs rotational movement in association with reciprocal movement of the membrane11. At this time, since the rotation section R1is provided with a magnet5or a direction sensor6, the magnet5or the direction sensor6also effects rotational movement. The direction sensor6detects rotational movement, to thus determine a relative position between the membrane and the rotation section. Thus, the position of the membrane11can be detected, and metering resolution is enhanced. Thus, accurate metering can be performed.
REFERENCES:
patent: 4520677 (1985-06-01), Macko et al.
patent: 5253535 (1993-10-01), McCown
patent: 6-41863 (1994-06-01), None
patent: 9-15019 (1997-01-01), None
patent: 2004-93497 (2004-03-01), None
patent: 2004-184308 (2004-07-01), None
Koba Yasuo
Nakamura Hirozumi
Ootani Takuhisa
Ueyama Kazunori
Matsushita Electric - Industrial Co., Ltd.
Pearne & Gordon LLP
Thompson Jewel
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