US Patent 8007304 Contact strip having pre-break recess with gradient width and deep

A contact strip comprises a plurality of contacts, and a connecting carrier having a plurality of connecting portions connecting with the contacts. The contact has a main body, a linking portion extending upwardly from the main body and a mounting portion downwardly bent from the main body. A pair of pre-break recesses are symmetrically defined on a front and a rear surfaces of the connecting portion, the recess laterally extends through the whole connecting portion and substantially has a gradual deeper depth. Operator can quickly and conveniently tear the recesses from the deep side of the recess to the shallow side of the recess to remove the connecting carrier from the contacts.