Abstract: A device (10) for shifting one structure with respect to another, is disclosed. The device comprises a body (12) defining a cylinder, a core (14) within the cylinder and rotatable in the cylinder with respect to the body (12). A coil spring is connected between the body (12) and the core (14) and is wound or unwound as the core (14) is rotated in the cylinder. A compressible ring (48) is carried by the core (14) and is in frictional contact with the body. The ring (48) can be compressed by a nut (66) screwed onto a shaft (50) forming part of the core (14) so that the frictional resistance offered by the ring (48) to turning of the core (14) in the cylinder is increased.

Abstract: Multi-outlet socket boxes for providing power and, optionally, data connection. The sockets are mounted in oppositely directed inclined flanks of a socket support structure. The socket includes a casing containing the support structure, with an opening in the casing and a cover which, in its closed position conceals the structure and in its open position permits access to the sockets. The cover may be in two parts which move towards and away from one another during closing and opening movements. The cover could include several slats hinged together, guides for guiding the slats, and a locking mechanism.

Abstract: A device (10) for shifting one structure with respect to another, is disclosed. The device comprises a body (12) defining a cylinder, a core (14) within the cylinder and rotatable in the cylinder with respect to the body (12). A coil spring is connected between the body (12) and the core (14) and is wound or unwound as the core (14) is rotated in the cylinder. A compressible ring (48) is carried by the core (14) and is in frictional contact with the body. The ring (48) can be compressed by a nut (66) screwed onto a shaft (50) forming part of the core (14) so that the frictional resistance offered by the ring (48) to turning of the core (14) in the cylinder is increased.

Abstract: A power supply system is disclosed which comprises a printed circuit board (10) having on one side of the substrate thereof a live track (58), a neutral track (54) and a switched live track (52). A switch (30) when closed connects the live track to the switched-live track (52). The tracks (52, 58) connect live input terminal (12) to a live output terminal (20) and a neutral input terminal (16) to a neutral output terminal (18). A second switched-live track connected to the track (58) is provided on the opposite side of the substrate.

Abstract: Multi-outlet socket boxes for providing power and, optionally, data connection. The sockets are mounted in oppositely directed inclined flanks of a socket support structure. The socket includes a casing containing the support structure, with an opening in the casing and a cover which, in its closed position conceals the structure and in its open position permits access to the sockets. The cover may be in two parts which move towards and away from one another during closing and opening movements. The cover could include several slats hinged together, guides for guiding the slats, and a locking mechanism.

Abstract: An installation coupler is disclosed for connecting a first cable (306) to a second cable (330) in and installation for supplying power to at least two workstations (322) via a free set of plug pin socket contacts (314) and via the second cable (330). The first cable (306) has a double female installation socket (300) with two sets of contacts (314) and the second cable (330) has a male installation plug (304) that can be plugged into at least one of the sets of contacts (314), with a predetermined orientation of the plug (304) relative to the set of contacts (314). The installation plug (304) includes a protruding stop (307) that partly obstructs the lower one of the sets of contacts (314) when the plug is incorrectly connected to the upper set, and that is clear of the contacts (314) when the plug (304) is correctly connected to the lower set. The protruding stop (307) thus prevents the simultaneous connection of the plugs (304) of more than one second cable (330), to the double female socket (300).

Abstract: An installation coupler is disclosed for connecting a first cable (306) to a second cable (330) in and installation for supplying power to at least two workstations (322) via a free set of plug pin socket contacts (314) and via the second cable (330). The first cable (306) has a double female installation socket (300) with two sets of contacts (314) and the second cable (330) has a male installation plug (304) that can be plugged into at least one of the sets of contacts (314), with a predetermined orientation of the plug (304) relative to the set of contacts (314). The installation plug (304) includes a protruding stop (307) that partly obstructs the lower one of the sets of contacts (314) when the plug is incorrectly connected to the upper set, and that is clear of the contacts (314) when the plug (304) is correctly connected to the lower set. The protruding stop (307) thus prevents the simultaneous connection of the plugs (304) of more than one second cable (330), to the double female socket (300).

Abstract: An installation coupler is disclosed which comprises a male installation plug (10) and a female installation socket (130). The installation plug (10) comprises a casing (12) and a sleeve (24). Similarly, the installation socket (130) comprises a casing (132) and a sleeve (142). On assembly of the installation plug (10) to the installation socket (130), electrical plug pins, which are located within the sleeve (24), pass through openings (278, 280, 282) located in the front wall of the sleeve (142) and displace a shutter which allows the plug pins access to socket contacts, located within the sleeve (142), to allow electrical current to flow from the installation socket (130) to the installation plug (10). A barbed portion (200) of an elongate protrusion (198) cooperates with an opening (126) in the side wall of the sleeve (24) to prevent the installation coupler from being disconnected by merely pulling the installation plug (10) and the installation socket (130) apart.

Abstract: An installation coupler is disclosed which comprises a male installation plug (10) and a female installation socket (130). The installation plug (10) comprises a casing (12) and a sleeve (24). Similarly, the installation socket (130) comprises a casing (132) and a sleeve (142). On assembly of the installation plug (10) to the installation socket (130), electrical plug pins, which are located within the sleeve (24), pass through openings (278, 280, 282) located in the front wall of the sleeve (142) and displace a shutter which allows the plug pins access to socket contacts, located within the sleeve (142), to allow electrical current to flow from the installation socket (130) to the installation plug (10). A barbed portion (200) of an elongate protrusion (198) cooperates with an opening (126) in the side wall of the sleeve (24) to prevent the installation coupler from being disconnected by merely pulling the installation plug (10) and the installation socket (130) apart.