Magnetic resonance alarm device

Details Magnetic resonance alarm device Magnetic resonance alarm device

1995-06-16

1997-08-12

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340429, 340571, 340665, 340669, G08B 1314

Patent

active

056569971

ABSTRACT:
A transducer device for converting mechanical motion into an electrical output, consists of an inductance, a flexible support and a permanent magnet positioned in approximately colinear alignment, the nature of the flexible support being such that the inductance and the permanent magnet are free to move mutually independently. The magnetic fields of the permanent magnet and the inductance are mutually interactive, and when the flexible support moves even slightly, it causes the magnet to move, which in turn induces changes in the self-inductance of the inductance and thus the resonance of the circuit, so as to convert the mechanical motion into an electrical output. This inventive transducer device may be implemented in a wide variety of different circuits to serve various functions, but it is particularly suited for use in an alarm device having one or more alarm or warning means.

REFERENCES:
patent: 4584569 (1986-04-01), Lopez et al.
patent: 4772879 (1988-09-01), Hein
patent: 4901569 (1990-02-01), Lui
patent: 5459447 (1995-10-01), Snyder et al.

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