Abstract: A window blind includes an upper beam and a lower beam linked by two ladder-like ropes. The ladder-like rope has a front vertical portion, a rear vertical portion, transverse portions connected between the vertical portions, first ring portions connected to the front vertical portion, second ring portions connected to the rear vertical portion, and third ring portions connected to the front vertical portion. The transverse portion supports a slat from below. The slat has two ends thereof each provided with a through hole and a slot communicated with the through hole. To assemble the slat, the third ring portion of the ladder-like rope has one segment inlaid into the through hole of the slat through the slot, and then the third ring portion is mounted around the front edge of the slat. Also disclosed is a method for assembling the slats of the window blind.

Abstract: A device and a system for preventing insertion of a fuse into a fuse holder, and methods for using the same. The device and the system comprise retaining elements that are adapted to engage with a fuse holder. When the device or system is engaged in a fuse holder, it is not possible to insert a fuse into the fuse holder. This allows for safe isolation of electric circuits.

Abstract: Provided is an electrical connection box that is equipped with a newly constructed dark current circuit connection/disconnection mechanism that can be used to change circuits of the dark current circuit connection/disconnection mechanism and improve versatility. A conduction member holder has a conduction member holding portion that extends spanning over a plurality of cavities that are provided in a case. A conduction member includes: a first conduction member that is connected to a connection terminal of a dark current circuit housed in one of the cavities; and a second conduction member that is connected simultaneously to the connection terminal of the dark current circuits housed in one of the cavities and a connection terminal of another circuit housed in another cavity. The first conduction member or the second conduction member that is selected according to a required circuit configuration is mounted in the conduction member holding portion.

Abstract: An electrical terminal contact may include a first tuning fork terminal extendable along a first axis, and may include a first prong and a second prong both extending from a joined first end to respective distal ends. The first end may have a first curvature transitioning to extend along a second axis substantially perpendicular to the first and second prongs. A second tuning fork terminal may be extendable along the first axis, and a third prong and a fourth prong may both extend from a joined second end to respective distal ends. The second end may have a second curvature transitioning to extend along the second axis substantially perpendicular to the third and fourth prongs. The first curvature of the first end and the second curvature of the second end may offset the respective first and second tuning fork terminals from each other along the second axis.

Abstract: A fused switch unit (1) is provided with a housing (2) in which a fuse plug (10) is arranged such that it can pivot to and fro between a switched-off position and a switched-on position. The fuse plug (10) has a grip part (11) and a retaining area (12) for a fuse link (20) and is capable of being pushed into the fused switch unit (1) as far as an operating position. Both the fused switch unit (1) and/or associated components (2, 30) as well as the grip part (11) of the fuse plug (10) each have a through-opening (15, 35). The through-openings (15, 35) are positioned such that they essentially do not overlap when the fuse plug (10) is in its operating position, and such that they are at least partially aligned with one another in order to hold an interlocking element (40) when the fuse plug (10) is in a position in which it is partially withdrawn from its operating position in the fused switch unit (1).

Abstract: An interlock assembly is provided for use in a manually operated multi-phase fusible switch having a fuse in series with a blade for each phase and a handle for simultaneously controlling the position of the blades. Each fuse is CONDUCTIVE when it allows current to flow therethrough and is BLOWN when it does not allow current to flow therethrough. The handle is coupled to a drive rod and is movable between an OPEN position and a CLOSED position wherein the blades conduct current therethrough when the handle is in the CLOSED position and do not conduct current therethrough when the handle is in the OPEN position. The interlock assembly includes an interlock mechanism for preventing the handle from being moved from the OPEN position to the CLOSED position when one or more of the fuses are BLOWN or missing, thereby preventing the blade for each phase from moving into the CLOSED position when one or more of the fuses are BLOWN or missing.

Abstract: An interlock assembly is provided for a fusible switch which has a fuse in series with a switch and an operating mechanism for controlling the operation of the switch. The interlock assembly is mechanically coupled to the operating mechanism and includes an indicator member disposed adjacent to the fuse for indicating the status of the fuse and an actuator member mechanically coupled to the operating mechanism for actuating the operating mechanism to open the switch when the fuse is BLOWN. A toggle member is coupled to the indicator member and to the actuator member for mechanically communicating the status of the fuse to the actuator member from the indicator member wherein the toggle member is in one position when the fuse is CONDUCTIVE and the toggle member is in another position when the fuse is BLOWN.

Abstract: An fuse orientation device for an alarm indicating type fuse includes an orientation ring removably positionable on a cylindrical fuse body adjacent to a selected end having an axially extendable alarm indicator pin, and a fuse element holder having fuse mounting clips, a shoulder and receiving gap in the fuse holder allowing a fuse carrying the ring to be mounted in a particular orientation so that the indicator pin will cooperate with an alarm indicating circuit in the event the fuse element interrupts the circuit.

Abstract: A connecting structure consists of an electrical connection box and a fusible link connector to be inserted into the connection box. The fusible link connector includes an insulating housing, a fusible link and a pair of nuts to be inserted into the housing and fitted at respective predetermined utmost positions therein. The electrical connection box is provided with a concave connector receiving portion into which the fusible link connector is to be inserted and which includes a pair of nut-abutting parts. In process of inserting the connector into the electrical connection box, if the nut-abutting parts come into contact with the nuts in the utmost positions, the parts serve to define the positional limit in inserting the insulating housing to a predetermined regular position. On the contrary, if the nut-abutting parts come into contact with the nuts inserted incompletely, the parts serve to prevent the insulating housing from being inserted into the predetermined regular position.

Abstract: A blocking member and a clamp as separate members, each a single, one-piece article. The blocking member has a canister form blocking element positionable in the clip which normally holds the fuse, and an arm extending therefrom. The blocking member also has fingers extending longitudinally of the canister to engage with the fuse clip, thus preventing vertical movement of the blocking member out of the fuse clip. The clamp is slidably fitted on the arm and moved to a locking position in which it prevents horizontal movement of the blocking element from the fuse clip. The arm and the clamp have holes that are aligned when the clamp is in locking position, for receiving an external locking means.

Abstract: A current limiting cartridge fuse having a portion of restricted diameter in one end cap, which serves as a rejection feature, is provided with an insulating insert which cooperates with the fuse casing and the one end cap to allow an active portion of a short circuit element to be located in the restricted diameter portion of the end cap.

Abstract: A fuse element with an essentially prismatic or cylindrical casing contains two electrical contacts that are accessible from the outside, that are situated on at least one exterior side of the casing and are electrically connected with a fuse arrangement inside the casing. In the casing an encoding arrangement is provided in which the electrical tripping characteristics of the fuse arrangement are encoded. To ensure a sufficient encoding variety with miniaturized design versions, even at higher manufacturers' tolerances, the encoding arrangement is formed by at least one appendage that is laterally or radially protruding from the casing in relation to the longitudinal axis of the casing and in whose configuration the tripping characteristics of the fuse arrangement are encoded.

Abstract: A single integral molded red plastic article, of star shape, having a central body portion with radiating arms at the ends of which are blocking elements of cylindrical shape. The blocking elements are of different sizes. In use, a selected one the blocking elements is pushed into one of the pair of fuse clips, after the fuse is removed. The selected blocking element is so selected according to the size of the fuse clip. The remaining blocking elements extend outwardly and serve as a grip for handling the article, and as a visual signal.