Test cord for telephone circuits

Claim 1

In a combination telephone protector module and test plug detachably engageable therewith to effect electrical communication therebetween, the improvement comprising: said module including a housing having an inner end providing means for the engagement thereof with a telephone connector block, and an outer end surface having openings therein providing access to electrically conductive terminals communicating with said inner end, a handle member mounted generally centrally on said outer end surface, said handle member having an enlargement thereon; said test plug having a cross sectional configuration generally corresponding to that of said housing of said module, and defining a recess extending outwardly from an inner end surface thereof sufficient to clear said handle upon engagement of said plug with said housing, and axially aligning said plug and said housing; a plurality of resiliently extendable pins on said plug projecting from said inner end surface thereof, and of effective cross sectional diameter substantially smaller than that of said openings in said outer end surface of said housing, said pins penetrating said openings upon engagement of said plug with said module, and effecting communication with said electrically conductive terminals without substantial contact with said openings; said handle and said plug having cooperative resilient detent means for maintaining said plug and housing in selectively engaged condition.