Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1980-11-10
1982-07-13
Miller, J. D.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
361146, 308 10, F16C 3906
Patent
active
043397808
ABSTRACT:
An apparatus for controlling vibration in a structural element includes a first magnet attached to the structural element, a sensing device positioned to detect motion of the structural element, and a vibration control device connected to receive information from the sensing device concerning motion of the structural element. The vibration control device includes a second magnet spaced apart from the first magnet and a coil for varying the magnetic field between the first magnet and the second magnet. The coil, in response to signals from the sensing device, alters the strength of the magnetic field and thereby controls vibration of the structural element.
REFERENCES:
patent: 2856238 (1958-10-01), Dacus
patent: 3110481 (1958-09-01), Kiverson
patent: 3233133 (1966-02-01), Kober
patent: 3845996 (1974-11-01), Geweke
patent: 4091687 (1978-05-01), Meinke
patent: 4128795 (1978-12-01), Habermann
patent: 4244629 (1981-01-01), Habermann
Design Professionals Financial Corp.
Miller J. D.
Schroeder L. C.
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