Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1976-06-23
1978-02-07
Krawczewicz, Stanley T.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
324 72, 324109, 324 32, G01R 2726
Patent
active
040728960
ABSTRACT:
An apparatus is disclosed for measuring the electron escape potential (or: Volta potential) of a metal surface. This apparatus comprises a conductive plate to be placed into the vicinity of and parallel to a metal surface under examination in order to form a capacitor; switch means for electrically connecting the conductive plate to a reference potential point; means for subjecting the conductive plate to vibration in a direction vertical to the metal surface; and an external circuit for measuring a measuring potential which is proportional to a current emitted by the capacitor. The conductive plate together with the switch means and part of the vibration-generating means are located in a probe and this probe is connected with the remainder of the apparatus by means of a flexible line which includes the required electric connections.
REFERENCES:
patent: 1254620 (1918-01-01), Newman
patent: 3379972 (1968-04-01), Foster et al.
patent: 3404341 (1968-10-01), Young
patent: 3611127 (1971-10-01), Vosteen
patent: 3772592 (1973-11-01), Rhodes
Fokker-VFW B.V.
Krawczewicz Stanley T.
Sunderdick Vincent J.
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