Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2006-10-10
2006-10-10
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C702S049000, C073S204250
Reexamination Certificate
active
07120542
ABSTRACT:
A flow monitoring system includes a first temperature-sensitive resistive device, thermally coupled to a first portion of a fluid transfer apparatus, for producing a first temperature-dependant voltage signal representative of the temperature of the fluid within the first portion of the fluid transfer apparatus. A first current control device, coupled to the first temperature-sensitive resistive device, controls a first current signal flowing through the first temperature-sensitive resistive device. A second temperature-sensitive resistive device, thermally coupled to a second portion of the fluid transfer apparatus, produces a second temperature-dependant voltage signal representative of the temperature of the fluid within the second portion of the fluid transfer apparatus. A second current control device, coupled to the second temperature-sensitive resistive device, controls a second current signal flowing through the second temperature-sensitive resistive device. A monitoring circuit monitors the first and second temperature-dependant voltage signals and produces an output signal representative of the volume of fluid passing through the fluid transfer apparatus.
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patent: 6450024 (2002-09-01), McCulloch et al.
Horowitz and Holl, “The Art of Electronics”, pp. 242-245, 253, and 423.
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PCT International Search Report for related PCT Application No.: PCT/US05/09722, 3 pages, Jan. 2006.
PCT Written Opinion of the International Searching Authority for related PCT Application No.: PCT/US05/09722, 7 pages, Jan. 2006.
Kottenstette Nicholas
Nagarkatti Siddharth P.
Shajii Ali
Slamka Louis
Cherry Stephen J.
McDermott Will & Emery LLP
MKS Instruments Inc.
Nghiem Michael
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