Abstract: An electrical cutout with a modular product design is provided with a constructional configuration for the insulator wherein the insulator is light in weight, has sufficient mechanical strength, can be readily injection molded, and wherein the creep distance is statistically maximized. The electrical cutout has an insulator, an upper and lower line terminal assembly, and a fuse assembly. The insulator has an elongated central stem portion defining a longitudinal direction, and a plurality of longitudinally spaced apart skirts mounted to the stem portion and so as to lie in respective transverse planes which are perpendicular to the longitudinal direction. The elongated central stem portion of the insulator has a non-solid cross-sectional configuration.

Abstract: A fuse is provided for protection of high current power distribution equipment, such as transformers. The fuse includes a dual function fuse element having a solder pot which permits fuse opening in response to long-term current overload conditions, and a minimum cross-section wire portion for short circuit opening. The fuse element is enclosed within a tube, and the tube is received within a housing. The tube is closed off on one end thereof with a dual size button, which size is selectable for reception into the housing.

Abstract: In a known magnet system, specifically for magnetic separators, having homogeneously magnetized magnet blocks arranged in circular ring shape, the magnet blocks have their magnetization directions aligned differently from one to another and established in accordance with a predetermined mathematical formula. While a magnetic field running almost uniformly over the whole region of the magnet system is thus produced, the magnet blocks are made trapezoidal in cross section and, because of the many distinct magnetization directions, require separate fabrication. Both the fabrication and the assembly of these magnet blocks are therefore relatively complicated and time-consuming. In accordance with the invention, however, the fabrication and the assembly of the magnet blocks into a magnet system are quite substantially simplified and improved by virtue of the fact that the magnet blocks (1) are made square in cross section.

Abstract: We provide an overload fuse link that is generally used in cartridge type fuses along with a short-circuit fuse link. The overload fuse link is prepared from a solder alloy and is directly attached to the interior of one of the cartridge fuse terminals. The overload fuse link has an open bore opening at one end and a connector extending from the other end. The cartridge fuse which uses the fuse link also has an insulator through which the connector passes and the insulator separates the short circuit fuse link from the body section of the overload fuse link wherein when there is an overload, the fuse link connector electrically separates from the fuse link body section.

Abstract: A bi-metallic switch element 10 has a contact wire 26 attached thereto by means of a plurality of crimps. A first crimp 28 applied at a first pressure fixes the contact wire to the element and a second crimp 30, formed at a lesser, more controlled pressure aligns the contact wire in a predetermined location.

Abstract: A bimetallic disc assembly for a bimetallic disc-actuated thermostatic switch includes a disc retainer, a bimetallic disc received in assembled position on the disc retainer and a metallic retainer cap for retaining the disc in assembled position on the disc retainer and for securing the assembly to the body portion of the thermostatic switch. The disc retainer is adapted to minimize heat flow from the metallic cap to the disc retainer by minimizing the areas of contact between the disc retainer and the cap. The disc retainer is integrally formed from a ceramic material and it includes a central hub having an axial bore extending therethrough, a circular flange extending radially outwardly from the hub, a circular shoulder extending upwardly from the flange, and a peripheral rim extending upwardly from the shoulder. The peripheral rim includes a horizontal edge with a plurality of circumferentially spaced projections or bumps which extend upwardly therefrom.

Abstract: A surface mount fuse device comprising an alumina-glass-fuse-glass-alumina laminated structure provides high voltage ratings and superior mechanical and thermal properties.

Abstract: A fuse that includes a tubular member made from insulative material, end block portions made from insulative material, a spanner joining together the end block portions, terminals extending through openings in the end block portions, and a fusible element having ends connected to both of the terminals. Each of the terminals has an internal portion inside the tubular member to which a fusible element is attached, an external portion outside of the tubular member, and a middle portion between the internal and external portions and located within one of the openings of the end block portions.

Abstract: A control device, parts therefor and methods of making the same are provided, the control device having a temperature sensing unit comprising a rod and tube means utilizing a heat expandable and contractible polymeric member disposed between one end of the rod and an abutment of the tube to tend to cause an outer end of the rod to move toward an actuator of the control device upon the unit sensing decreasing temperature and to tend to cause that end of the rod to move away from the actuator upon the unit sensing increasing temperature, a biasing member being operatively interconnected to the unit to continuously place the tube under compression between an open end thereof and the abutment thereof and to continuously place the rod under tension between the opposite ends thereof to tend to reduce the temperature differential of the control device.

Abstract: A valve block, in particular for slip-controlled hydraulic brake systems, includes a plurality of valve domes (10) incorporating magnet coils (1) and insulating casings cast around the magnet coils (1), as well as a contact carrier (2) containing a plurality of electric conductors (4), with the insulating material (10) encompassing the magnet coils (1) forming an integral unit with the contact carrier (2). The resulting design improves manufacturability, functional reliability, modular design flexibility and serviceability.

Abstract: Disclosure is a fusible link which prevents a housing from being deformed and discolored due to unnecessary generation of heat in a fuse element. In the fusible link, each of connecting plates includes two elastic engagement pieces and two projections respectively in each of ribs which are formed by folding the two ends of the connecting plate. A housing includes, in the inner wall of a connecting plate insertion hole through which the connecting plate is inserted, a connecting plate slip-off preventive stepped portion to be engaged by the elastic engagement piece and a connecting plate slip-off preventive flange against which the preventive projection is abutted. When the connecting plate is inserted through the connecting plate insertion hole, the engagement portions in the connecting plate are engaged with engagement portions in the housing respectively.

Abstract: A fuse that includes an insulative housing, terminals extending through gaps in the bottom of the housing, and a fusible element having ends connected to both of the terminals. The housing includes a four-sided box that is closed at the top and open on the bottom, and a lid for closing the open bottom of the box that is smaller than the open bottom of the box so that, when the lid is in place, two gaps are formed in the bottom and at opposite ends of the housing.

Abstract: A molded case circuit breaker for residential use employs an additional safety feature to ensure a fail-safe condition in the event that the circuit breaker is installed within a circuit that may be subjected to an excessive over-current fault that disables the circuit breaker trip unit. The integral bimetal-fuse within the circuit breaker trip unit responds to interrupt circuit current before any damage can occur to the associated electrical wiring system.

Abstract: A fuse for handling normal load currents substantially in excess of about 80 amps, the fuse comprising a metal portion formed of an integral piece of metal having outermost, spaced terminal-forming portions with bolt-anchoring holes therein and a fuse link-forming intermediate portion between the terminal-forming portions. The terminal-forming portions of the metal piece has a rectangular configuration having inner margins spaced from one another. The fuse link-forming portion of the metal piece has an S-shape with one face thereof being co-planar with one of the faces of the terminal-forming portions thereof. The thickness of the S-shaped fuse link is only a fraction of the thickness of the terminal thickness and has outermost legs respectively extending from the opposite sides of the innermost margins of the terminal-forming portions of the metal piece and a central link interconnecting the outermost legs.

Abstract: A fuse cutout assembly (21) including a containment housing (22), a fuse (23), a mounting assembly (24) mounting the fuse (23) in the housing (22) for electrical connection to an electrical circuit. A plunger assembly (29) is movably mounted at least partially inside the housing (22) and preferably surrounding the fuse (23). An electrical conductor (28) is electrically connected to the fuse (23) and mechanically connected to the plunger assembly (29). The plunger assembly (29) is supported in the housing (22) in a first position and is formed to be propelled inside the housing (22) away from the first position to a second position by the hot gases generated upon rapid melting of the fuse (23). Movement of the plunger assembly (29) is preferably yieldably resisted by the air trapped between the plunger assembly (29) and the housing (22), which may be vented during plunger movement.

Abstract: There is provided a fast acting subminiature cylindrical fuse having a cylindrical cover substantially locked onto a cylindrical base. The locking mechanism for the cover comprises a plurality of grooves and a plurality of corresponding projections on the internal surface of the cover and the external surface of the fuse base. The lock projections have a relatively straight diverging upper surface and a rounded bottom locking surface. The fuse base has a spacing ridge on the bottom thereof that spaces the fuse bottom surface above a circuit board surface. The fuse also has a plurality of pressure relieving passageways extending from inside the fuse to the outside of the fuse.

Abstract: A system for managing communication or power cables in proximity to a computer system. The system provides enclosures for routing or housing cables horizontally or vertically. Each enclosure is adapted for attachment to a computer cabinet, is easily installed and provides direct access for cable installation. The enclosures provide enhanced safety for personnel working in the area as well as presenting an outward appearance which is aesthetically pleasing and complementary with that of the computer system to which they are attached.

Abstract: A blown fuse indicator for a cartridge fuse wherein conductive brackets are mounted between electrical insulating end caps and the ends of a tube housing a lamp and associated resistors. Each conductive bracket includes a disc portion having a polygonal aperture for receiving a sleeve integral with the cap, the sleeve having a polygonal cross-sectional configuration corresponding to the disc aperture. The free ends of the lamp and resistor leads extend through the disc portion of the conductive bracket and are pressed and gripped between the cap and conductive bracket. The conductive bracket also includes a blade portion which may have a planar surface, a corrugated surface or a reversely bent portion to provide direct and positive contact with the end walls of the fuse ferrules, whether they be flat, concave or convex.

Abstract: A back-up safety device is shown for use with a power controller to prevent damage to circuits with which the controller is used in the event that the controller malfunctions. The safety device has performance characteristics which conforms to selected circuit breaker time-current curves so that it does not interfere with normal operation of the controller. The safety device is surface mountable on the same substrate on which the controller is disposed.

Abstract: a temperature switch is disclosed which has a bimetal disc being inversely deformed between a concave shape and a convex shape according to a temperature change. A bottom portion including the outer periphery of a casing of the temperature switch is in a plane shape. At an inner position of the outer periphery of the bottom portion, a protruding line for supporting an outer peripheral portion of the disc is formed. When the temperature switch is used in such a way that the outer surface of the bottom portion is in contact with a test subject, since heat is transferred from both iner and outer side walls of the protruding line to the disc, the delay of thermal transfer can be reduced.