Abstract:
An electrical socket is formed in a printed circuit board (PCB) using standard automated PCB production techniques. The socket (20) comprises a respective three legged slotted aperture (22) for each pin (11) of a male plug. The slotted aperture (22) defines two cantilevered portions (23) which receive a respective pin (11) in a slot defined therebetween. The slot is of slightly narrower width than the corresponding pin (11), but the cantilevered portions (23) are resiliently movable to enable the slot to receive and frictionally retain the pin therein. Plated contact surfaces are formed on either side of the slot to make physical and electrical contact with the pin. A modified socket (40) includes an integrally formed isolation switch. The cantilevered portions (41) extend beyond the point where the pin (11) is inserted therebetween. The distal ends of the cantilevered portions (41) are provided with respective contact surfaces (43, 44) which are normally spaced apart, but come into contact to close the switch when the cantilevered portions (41) are splayed apart by the insertion of a pin therebetween. Alternatively, contacts (32) on the cantilevered portions may be arranged to come into contact with corresponding contacts (33) on the circuit board.
Abstract:
A rechargeable type small electric appliance including a rechargeable battery (5) supplied by a charging circuit (6), both within a casing (1), having a battery outlet covered by a lid (14) is described. Means are provided for preventing operation of the charging circuit whilst it is open. In one embodiment this is by relative positioning of the power supply socket and the lid so as to prevent simultaneous charging and opening of the lid, whilst in other embodiments it is by physical integration of the power supply socket and the lid, or location of a power supply switch which must be "OFF" in order to remove the lid.
Abstract:
Method of manufacturing a flexible fastening member, flexible fastening member and object provided with such a fastening member, support provided with an object and with such a fastening member, and packaging provided with a number of such fastening members. The invention relates to a method of manufacturing a flexible fastening member (19) comprising a foil (1) for fastening an object (15) thereto, characterized by making at least two generally U-shaped incisions (5) which are spaced apart, which define a central portion (23) between them, and which are directed oppositely to another, the open ends of the U-shapes facing away from another so as to create two mutually opposed tags (11), and by bending the foil (1) along two parallel bending lines (13), each line being situated at the open end of a U-shaped incision (5) so as to obtain a generally U-shaped member (19) whose base is said central portion (23), and to obtain the tags (11) as extensions of the legs (25) of said U-shaped member and situated at one side of the plane (20) defined by the central portion (23), the legs (25) being situated at the other side of said plane (20). The invention also relates to a fastening member obtained by the method, an object provided with such a fastening member, a support provided with an object and such a fastening member, and a packaging provided with a number of such fastening members.
Abstract:
There is disclosed a method for manufacturing a printed circuit board in which fine copper circuit patterns (8) are transferred onto a thermoplastic resin (7), without producing a large amount of waste liquors in which copper is dissolved unlike in a subtract method. The method for manufacturing a printed circuit board includes the steps of manufacturing a printed circuit original plate (5) having protruding patterns (4) which have the same shape as circuit patterns to be formed and a height at least the same as the thickness of a copper foil (6) used and each of which is constituted by a flat or projecting curved surface to be brought into contact with the copper foil (6) and side surfaces different from the flat or projecting curved surface, and heating under pressure the protruding patterns (4) of the original plate (5) against a thermoplastic resin (7) with the copper foil (6) interposed therebetween to transfer portions of the copper foil (6) in contact with the protruding patterns (4) onto the surface of the thermoplastic resin (7), thereby forming the circuit patterns (8).
Abstract:
L'élément de support équipé d'un circuit électronique à composants multiples, notamment pour feu de signalisation automobile, comporte des lanières (42) séparées les unes des autres par des fentes (43), une pluralité desdits composants multiples (3) étant montée sur chacune desdites lanières (42). Cet élément est réalisé par découpe de manière à constituer des lanières se raccordant à au moins une racine de l'élément de support (4). Application véhicules automobiles.
Abstract:
A system for improving the performance of a microelectromechanical systems (MEMS) device that is housed in a package and implemented on a printed circuit board (PCB) comprises a footprint, an isolation channel, and a bridge. A portion of the isolation channel is removed to mechanically isolate the MEMS device.