Abstract: A board-indexing arrangement is provided in an end loading, rotary cam actuated, zero-insertion-force circuit board connector. An activating member drives a resilient arm locating member that temporarily presses inward on the edge of a circuit board in the receiving slot of the connector to insure seating of the board against a lateral index surface at the opposite end of the connector and thereby insures registration between the contacts of the connector and the conductors on the board. It also drives the rotary cam of the connector, moving the connector's contact strips in and out of engagement with the circuit board conductors.

Abstract: A cable clamp particularly adapted for use in connection with optical fiber cables is provided. The clamp comprises twin hermaphroditic half portions which intermate and are pivotally movable relative to each other to define two sets of clamping jaws which open and close simultaneously as a result of a scissorlike pivot connection. A locking band such as a threaded nut locks the jaws at one end of the clamp together to securely engage an optical fiber cable sheath and simultaneously to secure the optical fiber of such cable at the opposed end. Transverse slots may be disposed in the clamp body portions enabling strength members of an optical fiber cable to pass therethrough and be clamped to a clamp body portion by a locking nut surface or the like.

Abstract: A connector construction for joining optical fiber ends in an optical signal transmissive system comprises interlocking, telescoping plug and receptacle connector members. Each member engages a cable end from which at least one optical fiber extends. The fiber terminal portion in the receptacle is received in an adjacently mounted optical fiber guide having a passageway in which the fiber joint is to be effected. The optical fiber end or ends in the connector plug is received in a retractable, protective cylinder having an apertured distal end adapted to mate with the distal end of the optical fiber guide of the connector receptacle. The connector receptacle is telescopically received in the housing of the connector plug as the fiber(guide distal end mates with the retractable cylinder and forces such cylinder to retract in the direction of the plug clamp.