Abstract: A pump apparatus includes a pump chamber having a fluid inlet and a fluid outlet and a flexible impeller mounted for rotation within the pump chamber. The flexible impeller includes a plurality of radially extending vanes to contact a curved wall of the pump chamber, such that separate pump cavities are defined between adjacent vanes and the pump chamber wall. The fluid inlet and the fluid outlet are defined in the second end wall so that the curved pump chamber wall is uninterrupted.

Abstract: A pump apparatus comprising a pump chamber having a fluid inlet and a fluid outlet; and a flexible impeller mounted for rotation within the pump chamber, wherein the pump chamber is defined by a curved wall, the wall including a first wall portion having a first radius and a second wall portion having a second radius, wherein the second radius is greater than the first radius; the flexible impeller includes a plurality of radially extending vanes, wherein the vanes contact the curved wall of the pump chamber such that separate pump cavities are defined between adjacent vanes and the pump chamber wall; the flexible impeller is driven to rotate by a drive shaft; the drive shaft passes through a first end wall which closes one side of the pump chamber and a distal end of the drive shaft rotates within a bearing defined by a second end wall which closes the opposite side of the pump chamber; and wherein the fluid inlet and the fluid outlet are defined in the second end wall.

Abstract: A fluid pump comprising a conical body having an apex, a base and defining a lateral surface between the apex and base; a mating surface defined by a pump plate; a flexible membrane having a first face comprising a first part which is attached to at least a portion of the lateral surface of the conical body and a second part which is free, and having a second, opposite face secured around its periphery to the mating surface; and a driver adapted to drive the conical body; wherein the mating surface includes a fluid inlet port and a fluid outlet port, the fluid inlet port being spaced from the fluid outlet port; the driver includes a drive shaft and a drive plate carried by the distal end of the drive shaft, wherein the drive plate is inclined with respect to a plane normal to a longitudinal axis of the drive shaft such that the drive plate drives the conical body to precess about its apex in use such that at any given time the flexible membrane defines a contact portion in contact with the mating surface wher

Abstract: A fluid pump comprising a conical body having an apex, a base and defining a lateral surface between the apex and base; a mating surface defined by a pump plate; a flexible membrane having a first face comprising a first part which is attached to at least a portion of the lateral surface of the conical body and a second part which is free, and having a second, opposite face secured around its periphery to the mating surface; and a driver adapted to drive the conical body; wherein the mating surface includes a fluid inlet port and a fluid outlet port, the fluid inlet port being spaced from the fluid outlet port; the driver includes a drive shaft and a drive plate carried by the distal end of the drive shaft, wherein the drive plate is inclined with respect to a plane normal to a longitudinal axis of the drive shaft such that the drive plate drives the conical body to precess about its apex in use such that at any given time the flexible membrane defines a contact portion in contact with the mating surface wher

Abstract: A framework enables the automated and coherent analysis of the management of resources. Such resources may include impact resources. As such, the framework provides an integrated overview of various impacts of a resource portfolio, resource fund, manager of a fund, or other resource management instrument. The framework generates detailed reports at the portfolio, fund, manager, or firm levels. The reports provide an overview and a robust data set of metrics, scores, and other analytics regarding the impact of a particular resource management thesis, including at least an impact strategy score and an execution risk score. By determining a quantified and standardized measurement of the social and/or environmental benefits or impacts of various resource management instruments, the framework provides a user an aggregated overview of the various impacts at both the level of user's portfolio and the various funds, managers, or firms that the user holds within their portfolio.

Abstract: A gear pump includes a pump body 22 which defines a cavity hole 72 which holds a separate cavity body. The cavity body defines channels and a pump cavity holding a pair of gears. An inlet and outlet are connected to the channels. The separate cavity body may be manufactured separately and only this component needs to be manufactured to very accurate tolerances.

Abstract: A disposable pump has a pump unit 4 engaging with a drive unit 6. The drive unit drives a piston 18. The pump has an internal chamber having a flexible wall which engages with the piston 18 to allow a snap fit. The pump unit 4 is manufactured out of only three mouldings, one being the flexible wall which forms in part the membrane or diaphragm of the pump, sandwiched between upper and lower units 50,70.

Abstract: A gear pump has a face plate 2 cooperating with central plate 24 defining a pump chamber 21 holding gears 16. The pump chamber 21 is in fluid communication with drive chamber 32 holding the rotor 40 of an electric motor. An O-ring 18 may be used to seal the face plate 2. Other elements may be sealed using a permanent seal such as glue.

Abstract: A pump system 2 has a drive unit 4 and removable pump units 8, 10. The pump units have a body 22,26 having a pump cavity 24 and a rotary pump element 34 arranged to rotate in the pump cavity about an axis. Vanes 42 drive fluid from inlet 28 to outlet 30. A magnetic coupling is provided between magnets 40 in the rotary pump element 34 and magnets 16 in drive unit 4. A magnetic disk 48 provides an opposed axial force to axially balance the force between magnets 40 and magnets 16.

Abstract: A luminaire has an aluminium body with an opening extending longitudinally therethrough from a front face from which, in use, light is emitted, and a rear face to which, in use, a power coupler is connectable. A circuit board is mounted in the body proximate to the front face, which circuit board carries a plurality of LEDs. A power board carrying an RJ45 socket is mounted on the rear face of the body, the power board being electrically connected to the circuit board by a pair of wires. The wires are clipped into wire guides mounted in the body. A lens shroud mounts in the opening in the body in front of the circuit board and is secured in position by screws, the lens shroud having a plurality of cylindrical apertures formed therein corresponding in number and pattern to the number and pattern of LEDs on the circuit board such that each aperture aligns with one of said LEDs, shrouding its associated LED such that the light emitted therefrom is collimated.

Abstract: An LED based light bulb comprises a ring 1 of six LEDs arranged around a seventh LED 2 located in the centre of the ring 1. The LEDs forming the ring are selected in equal numbers from two groups, each group comprising LEDs which emit light falling within an associated wavelength range, the associated wavelength range being different for each group. The LEDs 1A from the first group are alternated around the ring with LEDs 1B from the second group in a 1A-1B-1A-1B-1A-1B pattern. The seventh LED 2 is selected from a group different to either of the groups from which the LEDs forming the ring are selected.

Abstract: This invention relates to an improved jack for data transmission, and in particular provides the jack having improved cross-torque characteristics. A jack is provided comprising a body having m unted thereon a multiplicity of metal strips. The strips include a first group of metal strips each of which includes a contact portion (7) for contacting a conductor of a mating plug and a connection portion for connection to a printed circuit board on which the jack, in use, is mounted. The strips also include a second group of metal strips each of which extends parallel to at least one metal strip of the first group over a part of the length of the metal strip of the first group and which is electrically connected to a different metal strip of the first group.

Abstract: This invention relates to an improved jack for data transmission, and in particular provides the jack having improved cross-torque characteristics. A jack is provided comprising a body having m unted thereon a multiplicity of metal strips. The strips include a first group of metal strips each of which includes a contact portion (7) for contacting a conductor of a mating plug and a connection portion for connection to a printed circuit board on which the jack, in use, is mounted. The strips also include a second group of metal strips each of which extends parallel to at least one metal strip of the first group over a part of the length of the metal strip of the first group and which is electrically connected to a different metal strip of the first group.

Abstract: A plug assembly for data transmission includes a wiring manifold (36) which controls the position of the conductors between the point where the cable connected to the plug enters the plug and the contacts of the plug. The cable consists of four twisted pairs of conductors AB, CD, EF and GH and the conductors are presented to the plug contacts in the sequence ABCFEDGH. The wiring manifold (36) constrains the conductors to run with the C conductor adjacent the E conductor. Preferably, the D conductor is constrained to run adjacent the F conductor. The arrangement reduces cross-talk induced between the connectors within the plug and leads to a consistent and predictable level of cross-talk which can be reduced or cancelled using suitable components associated with a jack into which the plug is, in use, inserted.

Abstract: A circuit board (1) for use in a connector between cables of a data transmission system has at least one array of input terminals (T1-T8) for incoming signals, at least one array of output terminals (t1-t8) for outgoing signals, and a respective conductive track (5) connecting each input terminal to a respective output terminal. Closed loops (6, 7, 8) of conductive material are connected to at least some of the terminals or conductive tracks, the loops being positioned on the circuit board to reduce crosstalk from the levels which would exist within the connector in the absence of such closed loops. The loops associated with one terminal will be positioned on the board opposite loops associated with another terminal or terminals to produce coupling therebetween. The invention is particularly applicable to RJ45 plug and jack systems.

Abstract: A method of reducing or eliminating skew between signals of first and second conductors of a data cable by transferring the signal of the first conductor to the second conductor at a position intermediate the ends of the data cable and transferring the signal of the second conductor to the first conductor at a position intermediate the ends of the data cable. The transferring of the signals in such that, in traveling the length of the cable, any one of the signals travels partly on the first conductor and partly on the second conductor. The first and second conductors are a twisted pair of first conductors and a twisted pair of second conductors.

Abstract: A mounting system for mounting a jack socket on a mounting panel, e.g. of a patch panel system, comprises a first clip component mounted on the obverse face panel and a second clip component which is located on the reverse of the panel and is secured to the first clip component by inter-engaging latches. The jack socket is mounted on a PCB which is releasably secured to the second clip component by latches. With the jack socket so mounted the body of the jack socket prevents disengagement of the latches and accordingly prevents accidental disassembly of the components. By releasing the latches the jack socket complete with PCB can be removed and thereafter the latches can be disengaged to permit removal of the first and second clip components.

Abstract: A jack socket assembly (20) includes a face plate (21) to which a jack socket module (27) is secured by a clip (26). The jack socket module comprises a printed circuit board (28), a jack socket (29) secured to the printed circuit board and terminal blocks (30). In addition to being usable in the jack socket assembly (20), the same module may be used in rack equipment, provided that a suitable clip is used to secure it to a mounting plate. Individual jack socket modules (27) can readily be removed and replaced as necessary.

Abstract: A structured cabling system includes a plurality of data cables (6A-6F), one end of each cable being secured to a jack of a multiple jack assembly (1) and the other end of each cable being secured to an individual jack (9A-9F) located within a protective enclosure (11). The individual cables are mechanically secured to at least the protective enclosure (11) and/or a strain relief member (8) within the cable bundle is secured to the protective enclosure (11). The entire assembly may be pre-formed under factory conditions and delivered to an installation site. The multiple jack assembly (1) may then be secured, preferably by snap-fitting, to a rack assembly and the protective enclosure (10) may be used to draw the entire cable length to the required position. Once the cable is in position the protective enclosure (10) is discarded and the jack secured to their final use positions.