Abstract: The invention is directed to an electrical connector (2) for electrically connecting contact surfaces (74) of a daughter board (18) to contact areas (46) of mother board (34). The connector (2) has contacts (36) positioned therein, the connector (2) having posts (38) which extend from the connector (2) and make electrical engagement with contact areas (46) of the mother board (34). The daughter board (18) is then inserted into the connector (2) under reduced or zero insertion force conditions and rotated to its operating position. As this rotation occurs, contact projections (60, 72) of the contacts (36) engage the contact surfaces (74) of the daughter board (18). The rotation is translated into a positive wiping action between the contact projections (60, 72) and the contact surfaces (74), thereby ensuring that a positive electrical connection is effected. The resilient nature of the contacts (36) ensures that this wiping action occurs under normal force conditions. The configuration and characteristics, i.

Abstract: An electrical socket contact for receiving a pin contact, the socket comprising a forward end comprised of at least two elongated cantilever spring tines for receiving the pin, each spring tine extending from a concave cross-section adjacent to the body from which it extends and transitioning into a convex cross-section adjacent to its free end, the free ends being tulip-shaped to form an entry for guiding the pin contact into engagement by the convex portions. Apparatus for manufacturing the contact includes a center die having shaped grooves, arcuate segments which close together about the die and have shaped ribs which are received in a respective groove, and an entrance die having a hemispherical protrusion which is inserted into an opening defined by the closed segments.

Abstract: A clamp type contact has a first elongate contact piece which is punched out of a blank member having an upper thin piece and a lower thick piece disposed in a relative downward direction from a position immediately below the end of the upper thin piece so as to have a free end and a base end. A second elongate contact piece is defined by the remaining upper thin piece and has a free end corresponding to the end of the upper thin piece, a base end integrally joined to the base end of the first elongate contact piece, a base portion extending sidewise from the base end and a bent portion allowing the free end to face the free end of the first elongate contact piece. A male contact piece is formed on the lower thick piece of the blank member.

Abstract: A contact for a connector, which includes two opposed contact elements for receiving therebetween a male contact of a mating connector. Each the contact element is provided with one or more protrusions on an opposed surface for embracing the male contact. Protrusions of the two opposed contact elements extend to that portions of the opposed contact elements which are devoid of the protrusions so as to overlap each other before the male contact is inserted between the contact elements. With this arrangement, even if the male contact is very thin, pressing force required to securely pressing the male contact by the contact elements is certainly obtained. The contact and the male contact are securely contacted without any torsional force and other forces which would otherwise be caused on these contacts.

Abstract: A contact spring is formed of a strip of spring sheet metal which is divided at one end into at least two and preferably three parallel webs, the two outer webs being longer and bent-back in a U-shape and connected at their free ends to one another by a cross piece which is immediately the U-shaped bend. The cross piece realizes a first contact surface while the shorter middle web has its free end residing opposite the cross piece to form a second contact surface. In the nonbent condition, the contact surfaces lie in the same region and are closely adjacent one another so that a band of spring sheet metal which includes a precious metal layer at only one side in a narrow region of the contact surfaces can be used to manufacture the contact springs. When two webs are provided, a longer one has a transverse arm and is bent-back adjacent the end of the shorter web.

Abstract: A plug header includes a plurality of tab receptacle contact terminals in two rows of passageways to receive blade sections of male terminals of a mating connector thereinto without stubbing. Lead-in surfaces at forward ends of the passageways cooperate with coplanar tapered forward portions of the opposing spring contact arms to provide continuous lead-in means. One of the spring contact arms is a dual beam for two points of contact engagement with the blade terminal. An axial rib segment of the adjacent passageway wall juts into the slot between the diverging front portions of the dual beam and has a tapered lead-in surface coplanar with the forward surfaces of the diverging front portions. And the slot has stop surfaces engageable with the rib segment if the dual beam spring contact arm is substantially stressed outwardly to minimize overstressing thereof.