Abstract: The invention relates to a closure device comprising a wall, an opening provided in this wall, a flap which selectively adopts at least one closed position in which it blocks the opening and an open position in which it uncovers this opening. Pins are connected to a first edge of the flap, and recesses provided in the thickness of the wall on either side of the opening to receive the pins. The device of the invention also comprises flexible arms which connect the pins to the first edge of the flap in an elastic manner in the direction of bringing the pins towards one another. These arms protrude from the first edge and from the rear face of this flap.

Abstract: An accessory for connecting a portion of a first conduit to a portion of at least one second conduit or to another accessory, which accessory includes a base element and an end element including complementary engagement elements co-operating with one another to allow relative displacement between the end element and the base element between a position in which the end element is deployed relative to the base element, and a position in which the end element is retracted onto the base element. The accessory includes resilient return elements distinct from the complementary engagement elements and suitable for acting between the base element and the end element in order to return the end element into the deployed position.

Abstract: An angle accessory for skirting ducts includes two flaps mounted to pivot about a pivot axis via assembly structure including two male engagement elements on the first flap and two female engagement elements on the second flap. In the vicinity of the male engagement elements, the first flap has at least one flange projecting from one of its end edges and forming an obstacle that co-operates with at least one lip of the first flap to define at least one passageway giving access to at least one male engagement element, the passageway having a small height constraining the flaps to be assembled together by bringing the second flap towards the first flap while tilting the second flap relative to the first flap's pivot axis, and then by straightening up the second flap along the pivot axis so as to engage successively the female engagement elements over the male engagement elements.

Abstract: An angle connection accessory is to be disposed at the junction between at least two skirting ducts extending in different directions. The angle connection accessory includes a plate having: a web; an inlet side face and an outlet side face that extend perpendicularly to at least one partition that is perpendicular to the web and that mutually isolates a first compartment and a second compartment; and an outlet face parallel to the partition via which firstly the first compartment opens directly to the outside, and secondly the second compartment also opens to the outside via a channel isolated from the first compartment and extending substantially perpendicularly to the partition between the second compartment and the outlet face. The plate includes two flaps hinged relative to each other via a hinge so as to form an angle between them, the channel extending at the join between the two flaps.

Abstract: An electrical equipment box includes a back incorporating one or more holes of elongate shape in a direction X for fixing the box to a wall. The hole or each hole is in a stud attached to the back by a flexible connection allowing a small offset of the hole relative to a stable original position in a direction Y parallel to the plane of the back and perpendicular to the direction X.

Abstract: A tie includes a strap having two end segments connected by an extensible intermediate portion provided with a succession of frangible bridges each connecting a first part of the intermediate portion to a second part of the intermediate portion. Two or more of the frangible bridges have different sections.

Abstract: A piezo-active device includes a piezo-electric element and an elastically deformable shell in which the piezo-electric element is disposed. The use of this piezo-active device includes, for supplying power to an electrical circuit connected to the piezo-electric element, the step of exerting on the piezo-active device a punctual mechanical action and then allowing the piezo-active device to resonate freely. An appliance includes this kind of piezo-active device, en electrical circuit connected to the piezo-electric element, and means for exerting the punctual mechanical action. A system includes this kind of appliance whose electrical circuit can emit electromagnetic waves and a second appliance adapted to receive waves emitted by the first appliance. Applications include controlling a spotlight.

Abstract: A trunking angle accessory for establishing continuity between two differently oriented lengths of trucking each including a base section having two lateral flanges with rims that are directed toward each other and include elements for fitting a length of cover section comprises two cheeks each adapted to establish a continuous wall between two lateral flanges of the two base sections. Each cheek carries a strip for establishing a continuous wall between the rims of two lateral flanges of the two base sections. The band of each cheek includes elements for fitting a length of cover section which extend along a circular arc of given radius of curvature.

Abstract: The present invention relates to an accessory for connecting a portion of a first conduit to a portion of at least one second conduit or to another accessory, which accessory comprises at a base element and an end element including complementary engagement means co-operating with one another to allow relative displacement between said end element and said base element between a position in which the end element is deployed relative to the base element, and a position in which the end element is retracted onto the base element. According to the invention, accessory includes resilient return means distinct from said complementary engagement means and suitable for acting between the base element and the end element in order to return the end element into said deployed position.

Abstract: The operating mode of a power modulation system is determined according to the nature of the load. The power modulation system can operate in either of two operating modes, namely a “reverse phase control” mode and a “forward phase control” mode. To this end, the load is supplied with power under predetermined low-load operating conditions by the power stage in the “reverse phase control” mode, overvoltages are detected and the power modulation system is caused to change to the “forward phase control” operating mode if an excessive number of overvoltages is detected.

Abstract: A device for connecting at least two lengths of trunking includes a plate for joining backs of base sections of the trunking. The plate has on each of its edges adjacent cut edges of the trunking base sections longitudinal tongues which bear on two opposite faces of each back. The tongues are substantially plane, have a thickness from about 0.2 mm to about 1 mm, and bear elastically against the opposite faces of the back.

Abstract: A line connector, such as a socket outlet or plug, includes at least one contact member such as a receptacle or pin and at least one connecting terminal which is electrically connected to the contact member and to which an electrical conductor can be connected. The connecting terminal has a tail which can be forcibly fitted into a tubular member for connecting a connecting terminal electrically to the contact member. Applications include demountable plugs and sockets.

Abstract: The trunking accessory makes up trunking including two or more juxtaposed lengths with different heights each including a base section with two parallel lateral flanges. The accessory includes two or more cheeks adapted to be attached to the lateral flanges, and each cheek includes members for mounting a length of cover section that extend along a line with two or more opposite curves to establish continuity between members for mounting a length of cover section situated at two different heights.

Abstract: An accessory for trunking includes a body provided at one end at least with attachment arrangements by which it can be attached locally to a longitudinal wall of the base section of the trunking. The attachment arrangements include a lug which can be clipped into a housing in the wall and includes an actuator tongue connected to a free end of the lug. The actuator tongue is accessible from the outside of the base section of the trunking and can be pulled in its longitudinal orientation direction to disengage from the housing the free end of the lug.

Abstract: A direct current supply voltage for controlling an electronic switch, for example a triac, is obtained from a residual voltage at the terminals of the switch when it is conducting. The electrical energy needed to produce an auxiliary power supply voltage is taken from the terminals of the electronic switch while it is conducting. The residual voltage is rectified and stepped up, for example using a regulated switch-mode power supply circuit as a rectifier/voltage step-up system.

Abstract: A housing for devices to be disposed along trunking, projecting from a wall includes a frame which is attached to the wall to form the housing for the device, an opening along one side which adjoins the trunking and a canopy which extends from the frame in corresponding relationship with the opening to cover the trunking locally and transversely. The canopy has a mobile part provided with two parallel arms which are slidably mounted inside the frame so that the mobile part of the canopy can be located relative to the frame telescopically in a series of predefined stable positions corresponding to different widths of trunking.

Abstract: A housing (1) designed to contain an assembly of modular electrical appliances mounted on a support (12, 14), whereof at least the first modular electrical appliance provided with data transmitters (36) and at least a second modular electrical comprising data receivers (42) enabling wireless communication from the first appliance to the second appliance. When the modular appliances are mounted in operating position, the data transmitters (36) of the first appliance are oriented opposite a surface of walls (2-8) of the housing. The data receivers can also be oriented opposite a wall surface of the housing.

Abstract: A support for a device, in particular for an electrical device, to be attached to a base section of trunking with rims directed towards each other has two crossmembers which interengage with the rims and each of which is equipped with arrangements for fixing the device. The fixing arrangements are attached to each crossmember by a flexible connection catering for a slightly offset position of the fixing arrangements in the general direction of the crossmember relative to a stable original position when fixing the device to the support.

Abstract: An angle accessory includes a mask extending between the covers of two conduit sections to be connected. An angle accessory includes two supports, one for each conduit section, each of those two supports having assembling parts for being directly mounted on the corresponding conduit section base and receiving parts for jointly fixing therein the mask, the mask being divided in two separate side walls, one side wall for each support, hence one side wall for each conduit section.

Abstract: An apparatus support used for example inside a box may have on each of its opposite sides groove elements for being mounted on the side units of a wireway base when the base has such side units. Associated with the support by way of mechanical fastening element, is a plate having at least two projecting columns, with on the top part of the columns, snap-on elements, and the support correspondingly includes snap-on elements matching the snap-on elements of the plate columns.