Patent ID: 7459922

Claim:
A microcontactor probe comprising: an insulator formed with a support hole having an open end and a close end; a lead conductor exposed inside the support hole at the close end; and a resilient conductive assembly fitted in the support hole and kept from falling, the conductive assembly comprising: a first plunger exposed outside at the open end; a second plunger contacting the lead conductor; a tubular conductor portion on one of the first and second plungers, a stem part of the other one of the first and second plungers, at least a portion of the stem part establishing a substantially concentric relationship with the tubular conductor portion at least during a probe operation, the concentric relationship of the tubular conductor portion with the stem part minimizing resistance and induction during a probe operation; and a coil spring fitted on the first and second plungers, the coil spring having a connected tight wound portion fixed to said one of the first and second plungers at a fixed part for conduction, the tight wound portion slidably contacting said other of the first and second plungers, whereby the tight wound portion minimizes resistance and induction during a probe operation.