Abstract: An electrical snap-action switch has as its moving member a strip (15) of a springy metal with which there is integrally formed a contact-carrying arm (18). This strip is held bowed into a C shape in a metal carrier (10) with a concave inner face (11) near which the strip lies when in one position.The operating member of the switch is a rocker (23) of an insulating material which rocks on a convex "bump" (24) on the carrier so that it has an inwardly extending pillar (24) with two studs one on each side of the strip (15). Hence operation of the rocker snaps the strip between its two positions, with corresponding movement of the contact carrying arm.

Abstract: A watch pierced bearing jewel forms the end of a sheathed optical fiber termination. The jewel is located on axis of a ferrule. The fiber is threaded through the jewel aperture and cemented in position. The jewel and ferrule may be held concentric in a resilient molded jig during assembly of the fiber thereto.

Abstract: A multi-way optical fiber connector in which optical fibers terminating in ferrules are located in the connector in the interstices of a resiliently mounted stack of rods. Each ferrule contacts the rods, along three lines instead of the whole of its periphery reducing the insertion force required for an interference fit.

Abstract: A method of holding the bared end of a plastic sheathed optical fiber accurately on axis of a metal ferrule through which it is threaded while a potting compound is cured which cements the assembly. The method uses a silicone rubber jig cast from an accurately machined mold. The resilience of the jig enables variations in diameter to be accommodated so that holes for locating the ferrule and the bared fiber end need to be coaxial, but their size is not critical. Many jigs can be cast from a single mold reducing costs and increasing output as compared with prior methods.

Abstract: An optical fiber connector in which the fiber terminations are cylindrical but have a protruding circumferential triangular cross-sectional ridge. Two terminations are aligned in end-to-end butting relationship in a hole through a resilient receptacle which has grooves corresponding to the ridges but at a slightly closer separation so that they urge the terminations into contact with each other.