Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2006-11-28
2006-11-28
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
07140262
ABSTRACT:
We have invented an improved apparatus for electronically measuring fluid flow. The apparatus includes a radiation detection means for indicating the position of a flow indicator in a chamber of a variable area flowmeter and has a reliability, versatility and functional accuracy not obtainable with known variable area flowmeters. The invention may also include a variable area flowmeter with the flow indicator in a tapered fluid flow chamber with a wall and a long axis, the chamber having a front side, a back side, and an operational length substantially parallel to the long axis. The invention has no moving parts and is not intrusive so mechanical malfunction and unwanted leaks can not occur. Useful embodiments include, for example, compact self contained apparatus useful for fitting around existing flowmeters, systems that include flowmeters and systems able to work with some fluids that are visually opaque.
REFERENCES:
patent: 2258023 (1941-10-01), McKemon
patent: 3582662 (1971-06-01), Soika
patent: 3623365 (1971-11-01), Lowell et al.
patent: 3933040 (1976-01-01), Thompson
patent: 4173890 (1979-11-01), Gilmont
patent: 4200806 (1980-04-01), Walker et al.
patent: 4335618 (1982-06-01), Bucsky et al.
patent: 4566337 (1986-01-01), Smart
patent: 4630485 (1986-12-01), Wastl, Sr. et al.
patent: 4630486 (1986-12-01), Miles et al.
patent: 4774676 (1988-09-01), Stenzel et al.
patent: 4864870 (1989-09-01), Payne
patent: 5099698 (1992-03-01), Kath et al.
patent: 5379651 (1995-01-01), Doolittle
patent: 6321604 (2001-11-01), Jackson et al.
patent: 2001153697 (2001-06-01), None
Neher Norman T.
Vaughn, legal representative Toni Cline
Berggren William R.
Thompson Jewel
Vaughn Neher Technology, LLC
Wiese William D.
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