Electricity: measuring and testing – Magnetic – Displacement
Patent
1983-09-30
1986-10-21
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
324232, 324236, 331 65, 340551, G01B 714, H03K 1795
Patent
active
046188231
ABSTRACT:
An inductive proximity switch including an oscillator a circuit of which has an oscillator magnetic core adapted to be influenced by a trip device for the purpose of actuating an electronic switch. The proximity switch is adapted to detect an approach of the trip device, of a permeable material, through a nonferromagnetic wall so as to enable a triggering of the switching process. A sensor field formed of a magnetic field of a permanent magnet or an electromagnetic, with the proximity switch having a saturation-sensitive magnetization area or region in which the magnetic fluxes of the permanent magnet or electromagnet and oscillator core heterodyne. The inductive proximity switch is adapted to be operated in saturation by a reduction in a magnetic resistance produced by introducing the permeable trip device into the sensor field, damping the oscillator circuit and causing a switching of the electronic switch.
REFERENCES:
patent: 2226275 (1940-12-01), Abbott et al.
patent: 3161387 (1964-12-01), Jutier
patent: 3405353 (1968-10-01), Smith et al.
patent: 3922599 (1975-11-01), Steingroever et al.
patent: 4045738 (1977-08-01), Buzzell
patent: 4384252 (1983-05-01), Kolter
Dahlheimer Peter
Soyck Gerno
Strecker Gerard R.
Werner Turck GmbH & Co. KG
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