Apparatus for testing diamonds

Details Apparatus for testing diamonds Apparatus for testing diamonds

1984-05-15

1986-10-14

Frankfort, Charles

Thermal measuring and testing

Determination of inherent thermal property

Thermal conductivity

G01N 2518

Patent

active

046169393

ABSTRACT:
Apparatus for testing diamonds for genuineness including a housing, a probe tip mounted in the housing and formed of a conductive material, a voltage stabilizer located in the housing remote from the probe and coupled to the probe tip by conductive material, the voltage stabilizer being operative to provide an output voltage which varies as a function of the temperature of the conductive probe tip, and indicating apparatus operative to provide a sensible output indication of genuineness of a diamond in response to the output voltage from the voltage stabilizer.

REFERENCES:
patent: 3611786 (1971-10-01), Schorr
patent: 4090151 (1978-05-01), Presset et al.
patent: 4137770 (1979-02-01), Trout
patent: 4255962 (1981-03-01), Ashman
patent: 4344315 (1982-08-01), Moxon et al.
patent: 4364677 (1982-12-01), Ashman
patent: 4395139 (1983-07-01), Namiki et al.
National Semiconductor Linear Data Book, 1976, National Semiconductor, Santa Clara, Ca., pp 2-22-2-24.

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