Abstract: Disclosed are configurations of inner and outer shells for a multi-piece closure assembly. The inner shell includes a base wall, and an outer skirt extending away from the base wall, carrying external thread segments, and including an axially outward portion, and an axially inward portion terminating in a grip petal portion having petals with radially inwardly projecting container engagement lugs and radially outwardly projecting outer shell engagement lugs. The outer shell includes a base wall, an inner skirt extending away from the base wall, and an outer skirt extending away from an outer periphery of the base wall at a location spaced radially outwardly from the inner skirt and including an internally threaded portion carrying internal thread segments and an unthreaded extension extending away from the threaded portion and on an axial side of the internally threaded portion opposite that of the base wall.

Abstract: An electrical connector has a row of metal spring clips mounted on the lower half of its outer shell to the rear of the contact block. Screened cables enter the rear of the connector, each screening sheath being doubled over and trapped between an inner stiffening tube and an outer metal collar. The clips make electrical contact with the screening sheaths via the collars. A clamping member on the upper half of the shell bears on the cables on opposite sides of the clips.

Abstract: An electrical connector for several screened cables has a transverse metal ground plate formed with rectangular apertures, one for each cable. The conductors in each cable are secured at their ends in contacts and these are supported in rectangular insulating beads. The screen of each cable extends over the bead and is trapped in position within a metal cage secured to the outside of the bead. The cage is a resilient push fit in a respective one of the apertures so that the screens are connected via the cage to the ground plate.

Abstract: An electrical connector has an outer metal shell containing a mounting block with columns and rows of mounting apertures. Some of the columns of apertures support electrical sockets; others support a grounding strip. The grounding strip makes connection at either end with the outer shell and has sockets extending in apertures in the block. Cables with two wires in a screening sleeve are connected with the connector by pins mounted at the ends of the wires and the screening sleeve. The pins on the screening sleeve are plugged into sockets on the grounding strip; those on the wires are plugged into sockets in the mounting block on either side of the grounding strip.

Abstract: An electrical connector has two parts each with a rectangular shell surrounding contact elements. The outside of one shell and the inside of the other are enlarged in the corners and so that the two shells can only be mated when presented square-on, thereby reducing the risk that the contact elements on one part will be inadvertently contacted by the shell on the other part. The two parts have mating coding members and clamping members located outside the shells, one part having two tower formations in which the coding and clamping members are located. The width of the towers is greater than the width of the shell on the other part.

Abstract: An electrical connector assembly has several sockets mounted in apertures in a ground plane. Each socket has a metal tube supporting wires that engage the surface of a pin inserted in the socket. Each socket is filtered by means a tubular capacitor one electrode of which is soldered in the aperture and the other electrode of which is electrically connected to the wires. An annular, ferrite inductor embraces the tube within the capacitor. Protection from a transient at any one of the sockets is provided by a transient protector device on a flexible circuit board joined to each socket.

Abstract: Electrical sockets are positioned for insertion in holes in a circuit board by means of a sheet of a bendable plastics having an array of apertures in some of which the sockets are inserted. Each socket has a knurled region around its upper end just below a flange. The flange is undercut to give it a sloping lower surface and a peripheral edge that bites into the upper surface of the sheet. Ultrasonic energy is used to cause the sheet material around the sockets to flow into close contact with the terminals. The assembly of the sheet and sockets is used to insert the sockets in the circuit board following which they are soldered in place and the sheet is removed by pulling back from one edge over the sockets.

Abstract: In a multi-conductor electrical assembly, each conductor is connected to a first common electrical plane via first unidirectional current devices and each conductor is further connected to a second common electrical plane via second unidirectional current devices having an opposite sense to the first unidirectional current devices. The assembly includes first and second energy-dissipating devices connected between ground and respective ones of the electrical planes such that an excessive positive or negative voltage excursion on any one of the conductors is conducted via a respective one of the first or second unidirectional current devices to the first or second plane and to ground via the energy-dissipating devices.

Abstract: A plug-in electrical connector includes a filter assembly formed by a printed circuit board supporting surface mounted capacitors. One electrode of each capacitor is soldered to a peripheral track that is in electrical contact with the outer metal shell of the connector. The other electrode of each capacitor is soldered to respective conductive regions around plated-through apertures. Each aperture contains a socket soldered to it and extending through the board. The sockets have several spring wire elements that establish electrical connection with respective pins 11 that extend through the sockets. One end of each pin is crimped to a respective conductor, the other end of each pin serving to make electrical connection with a cooperating connector. Electrical interference on signals passing via the pins is dissipated to ground via the capacitors.

Abstract: A display apparatus for displaying a plurality of physical parameters has a plurality of electrically-operable display regions which are to be operated in accordance with respective physical parameters. The display regions each comprise a plurality of display sections disposed in spaced array, an electrode which is common to all display sections in that display region, and a plurality of individual electrodes associated with individual and respective ones of the display sections in that display region. The electrodes of the said plurality of individual electrodes associated with one display region are coupled to respective ones of the said plurality of individual electrodes associated with another display region to form respective groups of electrodes.