Importance

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Abstract

An extendible probe comprising an electrode and a body having two parts which cooperate to clamp the electrode in a desired position. The electrode comprises an elongated length of small diameter, electrically conducting, non-corrosive material which is electrically insulated except for the tip of one end, which is exposed and formed to a point. The two-part body has a longitudinal opening therethrough, which receives the electrode. The front part of the body, referred to as the tip, includes a tapered collett which extends away from the rear end thereof and which is compressed under pressure against the electrode, which passes therethrough. The rear part of the body, referred to as the barrel, overlays the collett and threadably engages the tip of the body. This arrangement permits controlled longitudinal movement of the barrel relative to the tip of the body. A tapered portion of the interior wall of the barrel is configured to mate with the collett, and when the barrel and tip are operatively joined, the tapered portion contacts the collett. The amount of pressure applied to the collett depends upon the relative longitudinal relationship between the barrel and tip of the body.

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First Claim