Abstract:
A fuse assembly in which a molded cover is affixed over a standard tubular fuse. The cover is specially configured to allow the caps of the fuse to be surface mounted to solder points on a printed circuit board. The cover includes a pair of ears which contact the surface of the printed circuit board to prevent the assembly from rolling laterally. The cover has a flat face which may be printed to identify the fuse.
Abstract:
A fused plug having the line cord wires terminating within the plug and a fuse link inside the plug between each wire and an associated plug prong.
Abstract:
A crimp fuse constituting a separate unit independent of the electrical equipment with which it is to be used is disclosed, comprising a length of fuse wire material supported by an insulative rod onto each end of which is crimped a sleeve of e.g. conductive ribbon. An insulative covering, such as a shrunk-on piece of insulative tubing, insulates the wire and provides mechanical strength to the structure. One or both sleeves may be a double sleeve including a female terminal into which e.g. the stripped end of a line cord could be inserted for connection to the fuse. A pigtail may be provided at either or both ends to facilitate soldering.
Abstract:
An A.C. anti-radiation choke coil for a device such as a television set is inserted in a metal can and positioned and insulated therein by a hinged container of insulating material that closely encloses the choke coil; each section of the hinged container is provided with a part of a tubular extension which, when the container is closed, provides a full tubular conduit for the leads of the coil, spacing the leads, electrically and mechanically, from the edges of the opening in the can through which the leads extend.
Abstract:
A connector is provided with grounding contacts electrically connected to the host device's ground. The grounding contacts are positioned in the insertion path of a plug that is connected to a cable. The grounding contacts momentarily electrically contact the electrical contacts on the plug to discharge electrostatic charges in the cable to ground. A jack behind the grounding contacts in the housing receives the inserted plug. The jack includes jack contacts that are intended for making electrical contact with the plug contacts when the plug is fully inserted. Electrical connection between the plug contacts and the grounding contacts established as the plug is first inserted in the connector is broken prior to the electrical connection between the plug contacts and the jack contacts being established.
Abstract:
A coil is wound either with insulated wire or space wound with uninsulated wire and subsequently coated with a solder resist or insulating material. If insulated wire is used, the insulation is removed from the wire either during or after winding at predetermined locations to match the location of connection pads in a conductive pattern on a substrate. The coil is appropriately aligned and laid down on the substrate and an attachment technique is used to form an electrical connection between the exposed areas of wire and connection pads on the substrate. Alternatively, uninsulated wire may be used, which is space wound and coated with a solder resist or insulating material. The uninsulated wire may either be masked prior to coating or the insulating material may be removed following coating to form exposed connection locations on the coil corresponding to the location of the connection pads on the substrate. An attachment technique is then used to form an electrical connection between the exposed areas of wire and the corresponding connection pads on the substrate.
Abstract:
A fuse manufactured in multiple by insertion of pairs of fuse pins in rows in a base block or in discrete fuse bases supported by a plate which aligns them in rows; winding fuse wires successively along the pins and securing the fuse wires to the pins with the fuse wire between adjacent pairs of pins constituting the fuse link; removing the remaining fuse wire from between pins which are to form adjacent fuses, placing a body member with a cavity over each fuse link and placing a cover thereon. Where a single base block is used, the laminated structure is cut apart into a multiplicity of fuses. Where needed, an extinguishing powder may be sifted on prior to placement of the cover to complete the structure. Where desired, the fuse body and the cover sheet may be vented with an additional cover strip over the vent which will yield to excess pressure. Fuse blocks with multiple fuses of the same or different values may be thus created.
Abstract:
The method is used to assemble an electronic package of the type having a plurality of external conductive output pads for subsequent surface mounting of the electronic package. The method includes forming a nonconductive frame within the opening of a conductive lead frame such that the nonconductive frame is attached to and encapsulates a portion of each of the leads of the conductive lead frame. An electronic package, which includes two printed circuit boards, having components and conductive output areas on respective sides thereof, is positioned within the non-conductive frame from opposite sides and the conductive output areas of the boards attached to respective parts of different ones of the leads of the conductive lead frame. The electronic package is then encapsulated, leaving an air gap between the boards which cushions and isolates the internal solder joints from subsequent stress by allowing the boards to flex. The leads of the conductive lead frame are then separated from the frame.
Abstract:
A miniature end capless fuse comprises a nonconductive sleeve with a fusible element extending through it and leads to the ends of the fuse wire. Each electric lead to the fuse wire includes a deformed region near its end, but located outside the sleeve, for being held by insulating material applied over the entire fuse. The deformed region may be an enlargement at the end which does not extend into the sleeve but is attached to the end of the sleeve. It may alternately be a notch formed in the lead. The sleeve ends are metallized, the fusible element ends are soldered to the ends of the sleeve and the leads near their deformed regions are soldered to the ends of the sleeve, forming the fuse. The entire fuse is covered with a strengthening covering, e.g., a molded covering, which securely holds the leads to the sleeve by their deformed regions, e.g. their enlargements or notches.
Abstract:
A coil is wound either with insulated wire or space wound with uninsulated wire and subsequently coated with a solder resist or insulating material. If insulated wire is used, the insulation is removed from the wire either during or after winding at predetermined locations to match the location of connection pads in a conductive pattern on a substrate. The coil is appropriately aligned and laid down on the substrate and an attachment technique is used to form an electrical connection between the exposed areas of wire and connection pads on the substrate. Alternatively, uninsulated wire may be used, which is space wound and coated with a solder resist or insulating material. The uninsulated wire may either be masked prior to coating or the insulating material may be removed following coating to form exposed connection locations on the coil corresponding to the location of the connection pads on the substrate. An attachment technique is then used to form an electrical connection between the exposed areas of wire and the corresponding connection pads on the substrate.