Abstract: A data bus coupler includes a plated composite housing and a plurality of twin axial contacts, the shielding portions of each contact being connected to the housing by a conductive insert which serves to retain the contacts in the connector. The coupler also includes a printed circuit board carrying transformers and isolation resistors for providing stub connections to a data bus line.

Abstract: A current mode coupler for an unshielded twisted-pair cable includes an arrangement for establishing a low impedance, multiple point-of-contact electrical connection between a shielding base and cover. The grounding arrangement includes a conductive member on the cover which has an extension in the direction of assembly of the base to the cover, and resilient grounding fingers on the base for providing a wiping contact with the extensions on the conductive member when the base and cover are assembled to each other.

Abstract: A current mode coupler for an unshielded twisted-pair cable includes an elastomeric signal wire and E-core positioning member with integral strain relief, tapered E-cores for improved coupling to the wires, a write signal core which is twice the size of the read signal core, an all metal core suspension, an overcenter spring biased mounting arrangement, a metal enclosure for improved shielding, a resilient latch which avoids the need for pivoting of an upper housing member relative to the base unit during assembly, and contoured edges and corners for reducing heat accumulation.

Abstract: A resistance stack for terminating a data bus cable includes a stack of resistor chips, each having two conductively plated through holes. The resistance elements are kept in alignment and electrically connected to leads of the data bus cable by elongated members extending through the through holes. The elongated members may be discrete conductive rods, or soldered and pre-tinned leads of the cable. To facilitate assembly, solder preforms are provided between each of the resistor chips. The resistance stack is enclosed in a package which includes a cylindrical shell, a cable clamp, a cable strain relief member, and an end cap including a track for accommodating extensions of the elongated members beyond the last resistor in the stack, thereby aligning the elongated members. The package may be both electrically shielded and environmentally sealed.

Abstract: A cable coupling, particularly for data buses, includes a transformer and resistors to which the cables are directly wired. The components and all electrical connections are enclosed in a heat shrinkable tubing or sleeve filled with liquid encapsulant. Upon application of heat, the tubing shrinks causing the encapsulant to fill all voids between components. The encapsulant is then cured to provide an uncased coupling assembly which protects the components and electrical connections from breakage, while eliminating the need for a separate rigid housing. An overbraided shield and environmental seal may subsequently be added to provide further protection for the coupling.

Abstract: A multiple pin connector includes a printed circuit board positioned between insulating components of a connector insert. The printed circuit board electrically connects together contacts of the connector and is affixed to the insulating components by a bonding material. The contacts pass through the insert and are soldered to traces on the circuit board to thereby group circuits at a first end of the connector into fewer circuits at an opposite end of the connector.

Abstract: A hermaphroditic coupling mechanism includes two identical coupling members, each including two latch arms and two detented locking ramp surfaces. The latch arms include surfaces which face a coupler interface, while the locking ramp surfaces face away from the interface. The latch arms are inserted through grooves in a collar on which the locking ramp surfaces are provided, and the members are then rotated relative to each other causing the surfaces on the latch arms to pass over detents on the locking surfaces, thereby locking the coupling members together against relative axial movement. The coupling members may be secured to respective contacts by a snap-fit arrangement.

Abstract: An arrangement for shielding a date bus coupler includes an overbraided shield electrically connected to each of the outer braids of the bus cables coupled by the coupler. The overbraided shield prevents shielding discontinuities at the terminations of the cables to the coupler.