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| Number | Title | Issue Date |
| 7724122 | Fuse providing circuit isolation and visual interruption indication A fuse including a fuse housing having first and second electrical terminals, a movable partition made from an electrically conductive material movably disposed within the fuse housing, a fusible structure connected between the first electrical terminal and the mova... | 05/25/2010 |
| 7403372 | Multiple fused junction with blown fuse indication A multiple fused junction with blown fuse indication which generally includes a main body, a fuse connected to the main body and a switch disposed within the main body. The main body has multiple cable ports extending outwardly therefrom. At least one of the ports i... | 07/22/2008 |
| 7369030 | Fuse state indicator A fuse state indicator includes an extension member, a secondary fuse link coupled to the extension member, and a contact pin configured to engage a first terminal element of a fuse. An end of the secondary fuse link is wrapped around the pin and establishes an elec... | 05/06/2008 |
| 7362207 | Electrical switching apparatus and limiter including trip indicator member A limiter includes a housing having a first surface and a second surface, a line terminal, a load terminal, a fusible conductor electrically connected between the line and load terminals and an indicator button disposed proximate the first surface. The button includ... | 04/22/2008 |
| 7358845 | Cable limiter and crab limiter employing replaceable fusible element A cable limiter includes a main body having a cavity. The cavity of the main body is structured to receive a replaceable fusible element. An annunciator is housed by the main body. The annunciator is structured to annunciate status of the replaceable fusible element... | 04/15/2008 |
| 7348872 | Fuse having a plurality of configurable thermal ceilings A fuse having a plurality of configurable thermal ceilings. The fuse includes a housing, a first conductive cap, a second conductive cap, a plurality of conductive elements extending through the housing, and a conductive connector that is electrically coupled to a c... | 03/25/2008 |
| 7339486 | Insertion type fuse with breakage indication An insertion type fuse with breakage indication comprises a seat having a long receiving chamber for receiving a metal fuse; an rectangular bi-directional SMD form LED set being located on the buckle portions; the LED set being a coating device and being high temper... | 03/04/2008 |
| 7332994 | Apparatus for positive indication of fuse latch operation in electrical switchgear An apparatus for indicating the proper seating of a high voltage fuse in its mounting assembly in connection with electrical switchgear utlilizes a spring loaded flag positioned adjacent a latching protrusion for engagement by the latch of the mounting assembly such... | 02/19/2008 |
| 6831546 | Impact signaling system for a high-voltage protective device The impact signaling system (9) is used in a high-voltage protective device and has a housing (13), a spring (16) which is arranged in the housing (13) and has a moveable end, an actuator (17) which can be passed out of the housing... | 12/14/2004 |
| 6720857 | High voltage fuse A fuse is provided that is suitable for operation in unusual environments and includes an operation indicator that is simple and reliable. A movable arcing tube is released during operation. As the arcing tube moves outside the fuse assembly, a latching spring moves... | 04/13/2004 |
| 6566996 | Fuse state indicator A fuse state indicator includes a fuse casing having a transparent lens, a combustible substance disposed adjacent the lens, and a base layer disposed adjacent the combustible substance and having a contrasting color relative to the combustible substance.... | 05/20/2003 |
| 6064292 | Electrostatic discharge protected fuse and fuse holder An electrostatic discharge ground path for a fuse installable in a fuse holder includes an area of metallization on at least one insulating surface of the fuse extending from an exposed surface of the fuse to a contact area within the fuse holder.... | 05/16/2000 |
| 6008715 | Electro-static discharge (ESD) hardened fuse A fuse for interfacing electrical current with electronic components and for shielding the electronic components from potentially damaging electrostatic discharge. The fuse includes a fuse body having an edge and first and second electrical contacts. A fu... | 12/28/1999 |
| 5886613 | Indicating fuse with protective shield A pin indicating fuse construction incorporates a protective shield member that isolates an indicator assembly from a main-fuse link. By use of the inventive protective shield, arc-quenching filler may be excluded, resulting in a less-costly, more reliabl... | 03/23/1999 |
| 5481239 | Limiter indicator Limiters for protection against fault currents in electrical distribution networks the limiter having externally visible indicator for indicating that a limiter element has fused and which visible indicator may be reset and reused after a fused limiter is... | 01/02/1996 |
| 5367281 | Striker pin device for an electric fuse A striker pin device for providing a visual indication of an operated condition of an associated fuse, comprising a tubular housing coaxially arranged within the fuse with an end of the housing in contact with an end of the fuse. The tubular housing has a... | 11/22/1994 |
| 5319344 | Externally mounted blown fuse indicator An externally mounted blown fuse indicator including a housing, a spring-biased plunger, a tungsten restraining wire, two terminals, and a cover, the plunger having a meltable region that is heated by the restraining wire and melts to release the plunger ... | 06/07/1994 |
| 5260679 | Fuse cartridge of the type with functioning indicator Fuse cartridge, of the type comprising, a striking element (8) retained against elastic means (7) by a conductive wire (6) connected between the connection heads (2) in parallel with at least one meltable element (5) so as to melt with the latter under th... | 11/09/1993 |
| 5055818 | Flagged blown fuse indicator The blown fuse indicator is mounted to one of the opposed ferrules of a fuse and ejects a streamer therefrom in response to a blown or open fuse condition. The streamer is a strip of vinyl which is secured at one end to a plunger held within a housing mou... | 10/08/1991 |
| 4962977 | Electric fuse An electric fuse constructed of a subassembly including a blown-fuse preassembly. The preassembly includes a stationary structure including an indicator housing having a chamber therein, an indicator pin mounted in the chamber for movement from a nonindic... | 10/16/1990 |
| 4912449 | Operation-indicator device for fuse cartridges for electrical protection This invention relates to an operation-indicating device for fuse cartridges for electrical protection, of the type comprising a plunger formed by a pusher element which is retained against a resilient actuating member by a secondary fuse wire connected i... | 03/27/1990 |
| 4906963 | Externally mounted blown fuse indicator A spring loaded blown fuse indicator is provided that is adapted to be mounted directly on the side of an electric fuse in parallel with the fuse current path. The indicator provides an indicating pin that extends perpendicular to the longitudinal axis of... | 03/06/1990 |
| 4766408 | Current limiting fuse with indicator A current limiting fuse with an indicator characterized by a generally tubular, electrically insulating casing having a pair of tubular terminal members at opposite ends of the casing. A fusible element extends between the terminal members and through the... | 08/23/1988 |
| 4617544 | High voltage, high rupture capacity fuse An HRC-fuse as an insulating body surrounding a main fusible conductor and an auxiliary fusible conductor connected to a spring biased impact pin. A conductive cap serving as a terminal for the fusible conductors is arranged on the insulating body and is ... | 10/14/1986 |
| 4593262 | Time delay indicator fuse A fuse (12) for protecting a circuit and comprising a tube (14) of insulating material having an inner wall surface (16) and an outer wall surface (18) so as to form a fuse housing. The fuse includes two opposite axial ends (20) and (22), and a first (24)... | 06/03/1986 |
| 4511876 | Electrical fuse with response indicator An elongated fuse housing includes a fusible wire longitudinally extended and coaxially mounted within a housing having end terminals. A spring indicator unit is secured to one end and includes a relatively large diameter loosely wound section forming a h... | 04/16/1985 |
| 4427963 | Brake and operation indicator for a high-voltage switch A brake and operation indicator for a movable contact of a switch, the movable contact being rapidly moved by ignition of a power cartridge to open the switch. A thin-walled sleeve is positioned conformally about a movable pin, a portion of which is light... | 01/24/1984 |
| 4420735 | Low current clearing back up fuse An energy-limited fuse having a number of fuse elements spirally wrapped about a spider formed from a number of insulating plates, the fuse elements being supported in a parallel spaced relation at a distance sufficient for each element to operate indepen... | 12/13/1983 |
| 4387358 | Side mounted blown fuse indicator An electric fuse is provided with a blown fuse indicator mounted on a lateral wall of the fuse. One of the end terminals of the fuse is provided with a first opening therein in a surface which faces the interior of the fuse casing. The same end terminal i... | 06/07/1983 |
| 4384266 | Fuse apparatus An alarm indicator fuse (1) for large current and high temperature applications. The fuse assembly comprises apparatus (16, 121, 162) slidably engaging alarm indicator apparatus (14, 15) coupled between one conducting member (12) and a fuse element (13) e... | 05/17/1983 |
| 4344058 | Low voltage cartridge fuse design This invention relates to electric fuses meeting the requirements of Underwriter's RK1 classification. It includes a high-current interrupter in the form of a fusible element having serially arranged points of reduced cross-section and a low-current inter... | 08/10/1982 |
| 4335416 | Telephone protector module having flag indicator A heat sensitive telephone protector module of a type having visual indicator means to indicate the actuation of heat sensitive means upon the occurrence of excessive current flow. The module includes dual heat sensitive units for protecting the tip and r... | 06/15/1982 |
| 4323874 | Blown fuse indicator A blown fuse indicator for an electric fuse having a tubular casing of insulating material, a pair of terminal caps mounted on the ends of the casing to close the ends thereof, a fuse link conductively interconnecting the terminal caps and an arc quenchin... | 04/06/1982 |
| 4322706 | Piston actuated striker for electric fuse A fuse striker affords a visual or other indication of an operated condition of an associated fuse and is mounted within the fuse and comprises a housing structure coaxially arranged within the fuse with an end of the housing in contact with an end of the... | 03/30/1982 |
| 4306212 | Electric fuse for elevated circuit voltages A fuse for elevated circuit voltages having a blown fuse indicator. The fuse is characterized by its great simplicity of design. Virtually all its components, or constituent parts, form a sub-assembly capable of being inserted as a unit into the fuse tube... | 12/15/1981 |
| 4263575 | Fuse cartridges In a fuse cartridge the indicator button, normally retained within a head of the cartridge and adapted to protrude outwardly when the latter has "blown", is disposed axially to the said head and the contact blade corresponding to the latter has a notch fo... | 04/21/1981 |
| 4204182 | Indicating or striker pin for electric fuses The current path of an electric indicating or striker pin fuse, and more particularly its fusible element, includes a point of maximum resistance where fusion of the latter must take place. That predetermined point is arranged in such a way that the pulve... | 05/20/1980 |
| 4186365 | Translucent housing for a circuit interrupting device An improved high-voltage fuse, the blown or unblown condition of which can be readily ascertained, is disclosed. Known fuses include a fusible element and a movable component, such as an arcing rod, which is held in a normal first position as long as the ... | 01/29/1980 |
| 4156225 | Electric fuse with indicating means An electric fuse is of the type including indicating means for indicating if the main fusible element has melted. The indicating means includes a first and second auxiliary fusible element, each having a higher resistance than the main fusible element. Wh... | 05/22/1979 |
| 4153893 | End fitting for high-voltage fuse An improved end fitting for a high-voltage fuse is disclosed. The fuse is of the general type having a movable striker pin which resides in a first position as long as a fusible element of the fuse remains intact. Should the fusible element cease to be in... | 05/08/1979 |
