Patent ID: 7274197

Claim:
A contact system for interfacing an electrical circuit to an electrical tester, comprising: at least two stacked pieces, wherein each of the pieces comprises: a plurality of probe pin holes that form vertical sets of corresponding probe pin holes in the stacked pieces, each set of probe pin holes comprising a probe pin for making electrical contact to the electrical circuit and the electrical tester; a plurality of first locking holes that form vertical sets of corresponding first locking holes in the stacked pieces, wherein alignment of the corresponding first locking holes in each set causes alignment of the corresponding probe pin holes to allow for insertion of a probe pin through each set of corresponding probe pins holes; and a plurality of second locking holes that form vertical sets of corresponding second locking holes in the stacked pieces, wherein alignment of the corresponding second locking holes in each set causes misalignment of the corresponding probe pins holes to capture the inserted probe pins in a captured position.