Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
Patent
1993-01-15
1994-10-11
Bartuska, F. J.
Check-actuated control mechanisms
Including means to test validity of check
By testing material composition
G07D 508
Patent
active
053539060
ABSTRACT:
In a metal body discriminating apparatus of a simple structure and a high detecting accuracy for discriminating a material, a shape, a size, or the like of a metal body by the magnetical principle, an oscillator which performs the oscillating operation by the resonant operation together with the coil wound like a ring is provided to thereby generate magnetic lines of force in the coil. Changes in frequency and amplitude of an oscillation signal in response to changes in impedance and inductance of the coil by the operation of the eddy current which is generated in the metal body by the magnetic lines of force by relatively moving the metal body into the hollow space of the coil are detected as feature parameters of the metal body. Two or more coils constructing a similar oscillator are arranged at regular intervals and a size of metal body is discriminated from each of the oscillation signals having a phase difference which are obtained when the metal body passes in the coils with a time deviation.
REFERENCES:
patent: 4059795 (1977-11-01), Mordwinkin
patent: 4124111 (1978-11-01), Hayashi
patent: 4151904 (1979-05-01), Levasseur et al.
patent: 4334604 (1982-06-01), Davies
patent: 4354587 (1982-10-01), Davis
patent: 4705154 (1987-11-01), Masho et al.
patent: 4754862 (1988-07-01), Rawicz-Szczerbo et al.
Takamisawa Kaihei
Tokumura Masakazu
Bartuska F. J.
Takamisawa Cybernetics Co. Ltd.
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