Flowmeter with an oscillation circuit receiving electric...

Details Flowmeter with an oscillation circuit receiving electric... Flowmeter with an oscillation circuit receiving electric...

2011-05-10

2011-05-10

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

Mass flow by imparting angular or transverse momentum to the...

C073S861110

Reexamination Certificate

active

07938022

ABSTRACT:
The flowmeter is provided with an oscillation circuit receiving supply of electric power in a non-insulated manner from an external power source and supplying the electric power to the coil to drive the magnetic substance, an insulating unit for insulating the coil from the magnetic substance and/or the electrically conductive fluid pipe, and a shielding unit being short-circuited to have a stable electric potential relative to the external power source and shielding the coil against the magnetic substance and the fluid pipe.

REFERENCES:
patent: 3608375 (1971-09-01), Cushing
patent: 3739640 (1973-06-01), Folts
patent: 4279168 (1981-07-01), Wyler et al.
patent: 4459857 (1984-07-01), Murray et al.
patent: 4590431 (1986-05-01), Anderson et al.
patent: 5400659 (1995-03-01), Yokoi et al.
patent: 6920799 (2005-07-01), Schulz
patent: WO 91/08448 (1991-06-01), None

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