Probe with ball bearing ball

Details Probe with ball bearing ball Probe with ball bearing ball

1975-12-10

1977-01-25

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3312, G01N 2772

Patent

active

040053601

ABSTRACT:
The present invention relates to a probe for measuring the thickness of thin non-ferromagnetic layers on a ferromagnetic base, with a spherical sector consisting of a ground ball bearing ball, with a pin-like fastener connected to the bottom side of the ball bearing ball, with a magnetizable carrier whose side, facing the spherical sector, has an opening for the fastener to be inserted there and which carries a transmission coil.

REFERENCES:
patent: 2249166 (1941-07-01), Parker et al.
patent: 2507529 (1950-05-01), Lipson
patent: 2625585 (1953-01-01), Krouse
patent: 2627119 (1953-02-01), Graham
patent: 2933677 (1960-04-01), Lieber

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