Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
2006-04-25
2006-04-25
Freay, Charles G. (Department: 3746)
Pumps
Motor driven
Electric or magnetic motor
C417S044110, C417S293000, C417S022000, C417S024000, C417S032000
Reexamination Certificate
active
07033147
ABSTRACT:
A centrifugal fluid pump assembly includes a body section and a control mechanism 6. The body section includes a housing, an impeller rotatable within the housing, and a motor for rotating the impeller. The pump assembly includes a motor current flow rate-related data storage section for storing, for a plurality of different predetermined viscosities, predetermined viscosity-related flow rate data formed from a plurality of motor current flow rate relation data at a plurality of different impeller rotational speeds at predetermined fluid viscosity, a fluid measurement data inputting section, an impeller rotational speed measurement function, a motor current measurement function, and a flow rate calculating section58for using a fluid viscosity value, an impeller rotational speed value, a measured motor current and data stored in the motor current flow rate-related data storage section to calculate a fluid flow rate.
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Yaegashi Mitsutoshi
Yanai Masamichi
Buchanan & Ingersoll PC
Freay Charles G.
Sayoc Emmanuel
Terumo Kabushiki Kaisha
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