Bel Fuse, Inc.

Other

Elliot Bernstein

John Youngfu Chen

Robert Schilling

Richard Rosenberg

A modular connector having a housing with one or more compartments, each compartment being structured and arranged to receive a plug. Within the housing are one or more conductive planes. Preferably, there are two conductive planes, a voltage source plane and a voltage ground plane. These source and ground planes are provided on a printed circuit board within the housing. The source and ground planes create a low impedance path for the source and ground connections by directly connecting the source and ground planes to a system printed circuit board of the equipment unit by a common voltage source pin and a common voltage ground pin, each of which extend from the housing. The voltage source connections and the voltage ground connections for each RJ jack are respectively connected to the voltage source plane and the voltage ground plane such that each of the RJ jacks share a common voltage source and ground. Accordingly, when multiport RJ connectors are formed, the use of the common source and ground planes operates to reduce the number of pins in each RJ unit by requiring only one voltage source pin and one voltage ground pin regardless of the number of RJ jacks in the multiport connector.

High density RJ connector assembly

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.

Electrical discharge of a plug

An RJ jack includes a first housing having bottom, side, rear, front and top walls defining an interior chamber and an opening through the front wall through which a plug may be received into the interior chamber. A plurality of contact fingers extend from beneath the bottom wall to and over the front wall and into the interior chamber. The spacing between the contact fingers in the interior chamber is equal to the spacing of corresponding contacts in the plug with the spacing of the contact fingers extending beneath the bottom wall being substantially greater. A second housing is removably secured to the rear wall of the first housing, the second housing containing a plurality of magnetic elements. At least two guides for receiving light emitting devices are formed on the rear wall of the second housing. The top wall extends over the first and second housings and has a stopper for limiting movement of the plug within the chamber and a locking mechanism for releasably securing the plug within the chamber, and is transparent for transmitting light from the light emitting devices.

RJ jack with integrated interface magnetics

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.

Method of assembling electronic packages for surface mount applications

A coil form for supporting coils of wire includes three intersecting orthogonal plates whose peripheral surfaces together define an imaginary spherical surface. The plate peripheries increase the effective winding area of the coils with respect to the exterior dimensions of the coil form. Terminal posts for the ends of the coil wires are positioned on the plates so as not to waste space and not to project beyond the imaginary sphere.

Coil form and coil for antenna coils, or the like

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.

Molded capless fuse

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.

Surface mounted coil

A fuse block with a fuse formed of a single piece of fusible metal having a narrowed mid-section and wider end tongues which electrically couple the fuse block to disconnect terminals of an electrical system. A plastic housing covers the portions of the tongue adjoining the mid-section. The housing has a central aperture exposing all sides of the narrowed mid-section of the fusible element to the air. The aperture prevents the housing from acting as a heat sink for the fusible element and from interfering with the prompt reaction of the fuse to an electrical overload.

Fuse block

Method for surface mounting a coil

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.

Surface mounted fuse assembly

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.

Process of multiple fuse construction

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.

Crimp fuse

A fused plug wherein each of the line cord wires is connected within an encapsulating plug to the prongs extending from said plug with a fuse wire extending between each of the line cord wires and the prong. A small sleeve is crimped at one end of each of the fuse wires and, at the opposite end, each such sleeve is connected to the line cord wire. Similar sleeves at the opposite ends of the fuse wire are crimped to the fuse wire and to a wire connected to the prong. A protective tube encases the pair of sleeves which are spaced from each other by the effective length of the fuse wire. Both line cord leads may be similarly through the same type of fuse to the plug prongs. The entire fuse structure as well as the portion of the line cord entering the fuse and the portion of the prongs extending inside the plug are encapsulated by the plug material.

Splicer fuse integrated in line cord plug

A fused plug wherein at least one wire of a line cord is connected to a prong member by means of a fuse assembly in which one end of a length of fuse wire or other fuse material is electrically connected as by soldering or crimping to a portion of the line cord wire from which the insulation has been removed, the length of fuse wire lying along the line cord wire and being secured to the insulative sheath thereof by means of a sleeve, which preferably serves to electrically connect the fuse assembly to the prong member. The sleeve may further comprise a tang for connection to the prong member, for instance, by soldering, or the sleeve may be connected to the prong member by ring clip means, or by means of a pigtail to be provided in electrical contact with the sleeve for connection to the prong member. The fuse assembly further comprises an outer insulative sheath that covers the electrical connection between the fuse wire and the line cord wire, and covers a portion of the sleeve. The outer insulative sheath is preferably made of a synthetic material that can be slipped over the line cord wire in the form of a piece of tubing and then shrunk into place by heating.

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.

Growing community of inventors

Glen Cove, NY, United States of America

Elliot Bernstein