Vibration transducer with dual opposed magnetic assemblies and c

Details Vibration transducer with dual opposed magnetic assemblies and c Vibration transducer with dual opposed magnetic assemblies and c

1982-09-30

1985-05-14

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Displacement

73652, 324228, 367185, G01B 714, G01R 33038, G01H 1100, H04R 1100

Patent

active

045175144

ABSTRACT:
A magnetically suspended magnetic transducer has a first magnetic assembly including a first magnetizable housing with a bottom and upstanding walls defining an interior volume, a pair of opposed, mutually spaced magnets with a pole piece in between, and a coil in the interior volume in flux cutting relationship with the additive magnetic fields generated by the magnetic pair. The second assembly is magnetically suspended above the first assembly and includes a second housing with a closed top and downwardly depending side walls partially surrounding the side walls of the first housing, an additional magnet secured to the inner top surface in opposing magnetic relation to the closest one of the pair of magnets in the first assembly so that the magnetic forces urge the second housing away from the first. A mass secured within the second housing provides a weight of sufficient magnitude to counteract the magnetic force of repulsion tending to separate the two assemblies.

REFERENCES:
patent: 2985823 (1961-05-01), Wright
patent: 3065456 (1962-11-01), Alexander
patent: 3477280 (1969-11-01), Blackmer
patent: 3593258 (1971-07-01), Slavens
patent: 3835427 (1974-09-01), Breitbach
patent: 4051718 (1977-10-01), Meckl et al.
patent: 4282484 (1981-08-01), Morrow
patent: 4314202 (1982-02-01), Okubo

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