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Apparatus for analyzing precious metals

DC
  • US 5,888,362 A
  • Filed: 03/05/1997
  • Issued: 03/30/1999
  • Est. Priority Date: 11/30/1994
  • Status: Expired due to Term
First Claim
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1. Apparatus for analyzing a test specimen for metal content comprising:

  • a. a probe adapted for hand support incorporating;

    i. walls defining a reservoir that contain an electrolyte,ii. a nonconductive fluid permeable fiber tip extending from one end of the probe and in fluid communication with the electrolyte in the reservoir,iii. an electrode extending from the reservoir at least part way into the fiber tip,b. a source of substantially constant electromotive force coupled to the electrode at one point on the electrode,c. an electrical contact means for establishing direct electrical contact with a test specimen to be analyzed connected to an opposite polarity of the source of electromotive force from the polarity of the electrode in the reservoir and fiber tip,d. a non-conductive coating material surrounding the sides of the fiber tip leaving a limited portion of the end of the fiber tip free to contact the test specimen, said coating defining a small, specific and repeatable area of actual contact between the fiber tip and the test specimen,e. electromotive force measuring and indicator means connected in a circuit between the electrode in the reservoir and the fiber tip and the test specimen, andf. means for venting the reservoir.

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