Abstract: An electrical connector and method of making an electrical connection for reliably supporting conductors with a high retention force. The connector has two conductor-engaging members joined through a pin making an interference fit with and bonding itself to at least one member. The pin contains grooves and lands on its surface which are permanently altered as the pin is pressed or fired into the conductor engaging member to provide a strong, high retention force cold welded connection.

Abstract: The invention is a one-piece drive fastener for securing a plurality of apertured members to each other, and comprises a head from which extends a rigid shank. The shank terminates in a tip, and also has a plurality of circumferentially spaced-apart, rigid ribs which extend radially outwardly from and along the length of the shank, the ribs further having a pair of oppositely facing side walls. A plurality of axially spaced-apart, flexible flaps are integrally attached to one of the opposite side walls of at least some of the ribs, and the ribs form a sufficiently large cross-sectional width so that the shank is tightly engaged in at least one of the apertures and is thereby maintained in a substantially normal position relative to the members.

Abstract: A concept of joining two articles where one member has a plurality of ridges with the valleys between the ridges having a constant cross-sectional area but a sequentially varying cross-sectional shape so when such a member is inserted into a cavity having approximately the same cross-sectioned area, material in interference with the ridges flows into the valleys and upon further insertion into the cavity the material within the valleys is deformed in a direction lateral to the direction of insertion so as to join the two articles.