Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Reexamination Certificate
2005-09-12
2010-02-09
Dole, Timothy J (Department: 2831)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
C324S637000, C324S642000
Reexamination Certificate
active
07659729
ABSTRACT:
A microwave sending antenna3R and a microwave receiving antenna4R are provided to a right-side furnace wall1R, and the system is devised so that the microwaves emitted from the microwave sending antenna3R are reflected by the right-side edge of a cold-rolled steel plate2, and the reflected waves are received by the microwave receiving antenna4R. Similarly, a microwave sending antenna3L and a microwave receiving antenna4L are provided to a left-side furnace wall1L, and the system is devised so that the microwaves emitted from the microwave sending antenna3L are reflected by the left-side edge of the cold-rolled steel plate2, and the reflected waves are received by the microwave receiving antenna4L. If the time from the sending of the microwaves until the receiving of the reflected waves is designated as t, and the velocity of the microwaves is designated as c, then the distance to the object reflecting the microwaves is determined from t·c/2. It is possible to provide a method for measuring the width-direction end position of a material strip with which noise and atmosphere have little effect, installation is easy, and there is little mechanical interference with the material strip.
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Matsumoto Koichi
Yamada Takeo
Dole Timothy J
Frishauf Holtz Goodman & Chick P.C.
Nireco Corporation
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