Proximity sensor for hostile environments

Details Proximity sensor for hostile environments Proximity sensor for hostile environments

1988-05-16

1990-03-06

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

294907, 32420719, 361179, 901 46, G01V 308

Patent

active

049069268

ABSTRACT:
Proximity sensors for detecting the presence of metal objects such as sheet metal workpieces within workpiece engaging devices such as grippers and shovels. The proximity sensors are jacketed in a stainless steel casing, making them rugged and resistant to impact damage. Monitor circuits are used with the sensor which enable the devices to sense objects through their metal casing.

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patent: 3852662 (1974-12-01), Katz
patent: 3919629 (1975-11-01), Scruggs
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patent: 4587486 (1986-05-01), Soyck
patent: 4678992 (1987-07-01), Hametta
patent: 4678994 (1987-07-01), Davies
patent: 4697246 (1987-09-01), Zemke et al.
patent: 4724384 (1988-02-01), Castovilly et al.

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