Contact fingers for a testing apparatus for surface insulation r

Details Contact fingers for a testing apparatus for surface insulation r Contact fingers for a testing apparatus for surface insulation r

1977-12-15

1979-05-29

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 65CP, 324158P, G01R 3116, G01R 106

Patent

active

041568419

ABSTRACT:
An improved Franklin tester for measuring surface insulation resistivity on magnetic sheets. The contact fingers of the prior art tester are modified to accommodate an articulated contact tip. The articulated tip pivots when the tester is clamped on a magnetic sheet to thereby maximize the area of contact. Preferably the articulated tips are formed of stainless steel to overcome the rapid deterioration of the prior brass contact fingers.

REFERENCES:
patent: 1881457 (1932-10-01), Froeckman
patent: 2204136 (1940-06-01), King et al.
patent: 3369175 (1968-02-01), Morris
patent: 3537000 (1970-10-01), Easi
patent: 3559056 (1971-01-01), Easi
patent: 3596177 (1971-07-01), Butera
Franklin, R. F., "Measurement and Control . . . of Laminated Magnetic Cores", ASTM Bulletin, Jan. 1947, pp. 57-61.

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