Patent ID: 7303449

Claim:
A spring bushing for a miniature plug-in connector comprising: (a) a bushing housing having at least one housing chamber; (b) a one-piece contact spring received in said at least one housing chamber, said contact spring comprising first and second outer contact-providing spring tongues and a center contact-providing spring tongue bent out at least on one side of a flat sheet-metal punched part, said sheet-metal punched part comprising a first end and a second free end, said first end comprising a crosspiece carrying said spring tongues, said crosspiece forming a fixed connector, said outer contact-providing spring tongues being narrower in width than said center contact-providing spring tongue and being bent out from the crosspiece in a direction opposite from the center contact-providing spring tongue; and (c) a plurality of guide ribs carried on an outside portion of said contact spring proceeding from said crosspiece, said ribs positioning the contact spring in said at least one housing chamber; wherein the contact spring has an insertion depth and an insertion width for a contact blade, said insertion depth being less than or equal to said insertion width.