Measuring and testing – Volume or rate of flow – Proportional
Reexamination Certificate
2011-07-05
2011-07-05
Patel, Harshad (Department: 2855)
Measuring and testing
Volume or rate of flow
Proportional
C073S204230
Reexamination Certificate
active
07971479
ABSTRACT:
A fluid flow rate measurement apparatus prevents accumulation of pollutional substances in a sub-passage to enable high-accuracy fluid flow rate measurement. A heater pattern is formed on the surface of a cylindrical rod. When electricity is conducted in the heater pattern and heat is generated, the heat is transmitted to the sub-passage through an insulating layer. The heat is gradually transmitted up to the leading end of the sub-passage, and burns out pollutional substances adhering to the sub-passage. In this way, accumulation in the sub-passage of pollutional substances can be prevented, thus attaining a fluid flow rate measurement apparatus that enables high-accuracy fluid flow rate measurement.
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Hoshika Hiroaki
Kashio Kaori
Kokubu Takanori
Tokuyasu Noboru
Crowell & Moring LLP
Hitachi , Ltd.
Patel Harshad
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