Abstract: Disclosed is a light transmitting member for a polishing pad. The light transmitting member has a cylindrical or truncated conical shape, and a screw thread is formed on a side portion thereof. A polishing pad includes such a light transmitting member and a substrate polishing apparatus includes such a polishing pad.

Abstract: An electrical connector comprises a substrate, a datum reference position, a first plurality of intermediary members, and a first plurality of contact members. Each contact member has first and second arms extending away from a base towards opposite side surfaces to form a letter V with an opening facing the datum reference position. A connector array comprises one or more of the electrical connectors. A testing apparatus comprises a tester base, a supporting member, a frame, one or more of the connector arrays, and an upper cover.

Abstract: A pluggable state-of-charge (SOC) indicator and methods of use are disclosed. The pluggable SOC indicator includes at least one voltage input jack for connecting to a battery, at least one instance of control electronics, and at least one SOC indicator, such as a 5-bar liquid crystal display (LCD). Embodiments of the pluggable SOC indicator include, but are not limited to, a pluggable single-connector SOC indicator, a pluggable dual-connector SOC indicator, a pluggable tri-connector SOC indicator, and a pluggable quad-connector SOC indicator. Further, the control electronics are programmable for any input voltage range and/or battery discharge characteristics.

Abstract: A thermal-sensitive label includes a label-specific set point temperature visually displayed thereon, and a thermal indicator that changes visual appearance in dependence upon temperature change in comparison with a threshold temperature. The threshold temperature of the thermal indicator is set during manufacture to be a fixed amount above the set point temperature. The thermal indicator has a first visual appearance when a temperature measured by the thermal indicator is below the threshold temperature. The thermal indicator dynamically changes to a second visual appearance different than the visual appearance when a second temperature measured by the thermal indicator exceeds the threshold temperature. A label kit includes multiple labels with a variety of different set-points.

Abstract: Fuse state indicators include temperature responsive elements adapted to visually display a number of different fuse states. The displays may include distinct colors and markings that are made visible or concealed from view based on temperature ranges that the fuse is exposed to in use. Various temperature sensitive elements and various markings are disclosed to convey at least three distinct fuse states to interested persons at the location of the fuse.

Abstract: A fuse includes a fuse state indicator on the exterior surface of the fuse body. The fuse state indicator includes an electrically conductive element electrically connected to and extending between the terminal elements. A temperature sensitive element proximate and in thermal contact with the electrically conductive element includes material capable of changing color when heated to a predetermined transition temperature to form a mark on the temperature sensitive element. The fuse state indicator forms a first mark on the temperature sensitive element when heat from the electrically conductive element transfers to the temperature sensitive element in response to a first overcurrent condition, and forms a second mark, distinct from the first mark, on the temperature sensitive element when heat from the electrically conductive element transfers to the temperature sensitive element in response to a second overcurrent condition distinct from the first overcurrent condition.

Abstract: A fuse comprising a fuse body having ferrules at opposing ends, a fuse state indicator located on the surface of the fuse body wherein the fuse state indicator may be temperature sensitive or voltage sensitive and a wire extending from one ferrule to the other ferrule wherein the wire is positioned along the surface of the fuse body. The fuse state indicator senses heat generated by the wire or voltage flowing through the wire.

Abstract: Electrical fuse indicators which may be used to diagnose and identify a fault state or failure mode of the electrical fuse include in various exemplary embodiments, indicator materials such as a reactive material, which are incorporated into various fuse indicator devices to cooperate with a visually perceptible indicator portion or layer to indicate the failure mode or fault state if the electrical fuse.

Abstract: One embodiment of the present invention provides a fuse having opened-fuse indication, which places two or more coils or conductors in parallel and in thermal contact with an indicating material. The multiple conductors allow a lower level of current to produce sufficient heat or sufficient electrical resistance to transform the indicating material. The multiple conductors can also be made of a reduced diameter, resulting in surge protection at a lower device temperature. The multiple conductor indicator in an embodiment includes a base material. First and second conductors contact the base material. An indicating material thermally couples to the first and second conductors. The indicating material can be on the inside or outside of the fuse body. If on the outside, the body can define a recess, wherein the indicator resides within the recess. The indicator can operate with fuses and other types of circuit protection devices.

Abstract: A fuse comprising a fuse state indicator wherein the fuse state indicator may be temperature sensitive.

Abstract: One embodiment of the present invention provides a fuse having opened-fuse indication, which places two or more coils or conductors in parallel and in thermal contact with an indicating material. The multiple conductors allow a lower level of current to produce sufficient heat or sufficient electrical resistance to transform the indicating material. The multiple conductors can also be made of a reduced diameter, resulting in surge protection at a lower device temperature. The multiple conductor indicator in an embodiment includes a base material. First and second conductors contact the base material. An indicating material thermally couples to the first and second conductors. The indicating material can be on the inside or outside of the fuse body. If on the outside, the body can define a recess, wherein the indicator resides within the recess. The indicator can operate with fuses and other types of circuit protection devices.

Abstract: One embodiment of the present invention provides a fuse having opened-fuse indication, which places two or more coils or conductors in parallel and in thermal contact with an indicating material. The multiple conductors allow a lower level of current to produce sufficient heat or sufficient electrical resistance to transform the indicating material. The multiple conductors can also be made of a reduced diameter, resulting in surge protection at a lower device temperature. The multiple conductor indicator in an embodiment includes a base material. First and second conductors contact the base material. An indicating material thermally couples to the first and second conductors. The indicating material can be on the inside or outside of the fuse body. If on the outside, the body can define a recess, wherein the indicator resides within the recess. The indicator can operate with fuses and other types of circuit protection devices.

Abstract: 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 electrical connection thereto.

Abstract: A fuse state indicator for a fuse including a cylindrical fuse body and a primary fuse element therein, includes an extension member, a transparent lens, a combustible substance adjacent the lens, a secondary fuse link adjacent said combustible substance, and a curved backing layer adjacent said secondary fuse link. Said backing layer is at least partially concealed by said combustible substance when viewed through said transparent lens before the fuse has opened, and said backing layer maintains said secondary fuse link in position with respect to said combustible substance.

Abstract: A fuse state indicator for a fuse including a cylindrical fuse body and a primary fuse element therein, includes an extension member, a transparent lens, a combustible substance adjacent the lens, a secondary fuse link adjacent said combustible substance, and a curved backing layer adjacent said secondary fuse link. Said backing layer is at least partially concealed by said combustible substance when viewed through said transparent lens before the fuse has opened, and said backing layer maintains said secondary fuse link in position with respect to said combustible substance.

Abstract: A plug-in fuse 200 comprises a body 201 with side indented portions 203 which allow secure gripping by the thumb and finger of a hand. The side indented portions define upper and lower extended portions 319, 321 allowing insertion and retraction forces to be exerted on the fuse. The improved body shape allows quick and easy insertion of the fuse in high-density fuse holders. A thermally-degradable material 323 in close proximity to the burnout portion of the fuse element provides visual and/or tactile indication of fuse condition.

Abstract: An apparatus for diagnosing a tripped fuse is disclosed. The apparatus employs a chemical light installed at an upper portion of the fuse housing. A system for activating the chemical light is installed at the lower end of the housing. The activation system activates the light when an excessive current melts a soft iron element.

Abstract: A fuse indicator is disclosed for indicating the status of a fuse. The fuse indicator includes an electrically conductive material that extends between conductive ends of a fuse and undergoes a visible change in appearance upon being subjected to electrical current above a threshold. The fuse indicator also includes a layer of indicator material that becomes exposed beneath the electrically conductive material when the fuse indicator is subjected to electrical current above the threshold. The fuse indicator also includes adhesive for maintaining contact between the electrically conductive material and the layer of indicator material.

Abstract: An apparatus for diagnosing a tripped fuse is disclosed. The apparatus employs a chemical light installed at an upper portion of the fuse housing. A system for activating the chemical light is installed at the lower end of the housing. The activation system activates the light when an excessive current melts a soft iron element.

Abstract: One embodiment of the present invention provides a fuse having opened-fuse indication, which places two or more coils or conductors in parallel and in thermal contact with an indicating material. The multiple conductors allow a lower level of current to produce sufficient heat or sufficient electrical resistance to transform the indicating material. The multiple conductors can also be made of a reduced diameter, resulting in surge protection at a lower device temperature. The multiple conductor indicator in an embodiment includes a base material. First and second conductors contact the base material. An indicating material thermally couples to the first and second conductors. The indicating material can be on the inside or outside of the fuse body. If on the outside, the body can define a recess, wherein the indicator resides within the recess. The indicator can operate with fuses and other types of circuit protection devices.

Abstract: 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. A secondary fuse indicating circuit is electrically connected to a main fuse circuit in parallel with a main fuse link, and includes a secondary fuse wire link which is disposed adjacent the combustible substance. Heat created upon vaporization of the secondary fuse link ignites the combustible substance and reveals the base layer through the lens after combustion, thereby indicating a state of the fuse as operable or inoperable by the color visible through the lens. Combustion may be assisted with an energetic chemical compound applied to secondary fuse wire link and combustible substance.

Abstract: A plug-in fuse 200 comprises a body 201 with side indented portions 203 which allow secure gripping by the thumb and finger of a hand. The side indented portions define upper and lower extended portions 319, 321 allowing insertion and retraction forces to be exerted on the fuse. The improved body shape allows quick and easy insertion of the fuse in high-density fuse holders. A temperature-responsive material 323 in close proximity to the burnout portion of the fuse element provides visual and/or tactile indication of fuse condition.

Abstract: A fuse indicator is disclosed for indicating the status of a fuse. The fuse indicator includes an electrically conductive material that extends between conductive ends of a fuse and undergoes a visible change in appearance upon being subjected to electrical current above a threshold. The fuse indicator also includes a layer of indicator material that becomes exposed beneath the electrically conductive material when the fuse indicator is subjected to electrical current above the threshold. The fuse indicator also includes adhesive for maintaining contact between the electrically conductive material and the layer of indicator material.

Abstract: The present invention provides a blown fuse indicator. More specifically, the present invention provides a blown fuse indicator adapted for use with multiple element fuses, which provides a perceivable distinction between a blown fuse due to a current overload and a blown fuse due to a short circuit. To this end, in one embodiment of the present invention, a diagnostic blown fuse indicator is provided for a fuse having both a short circuit element and a current overload element. The indicator includes a short circuit indicator in electrical communication with the short circuit element, wherein the short circuit indicator provides visual indication of a short circuit condition. The indicator also includes a current overload indicator in electrical communication with the current overload element, wherein the current overload indicator provides visual indication of an overload condition.

Abstract: A fuse indicator is disclosed for indicating the status of a fuse. The fuse indicator includes an electrically conductive material extending between conductive ends of a fuse. The material undergoes a visible change in appearance upon being subjected to electrical current above a threshold. The fuse indicator further includes a layer of indicator material that becomes exposed beneath the electrically conductive material when the fuse indicator is subjected to electrical current above the threshold. An adhesive means maintains contact between said fuse indicator and the fuse.

Abstract: An electric fuse is comprised of a tubular fuse casing formed of an electrically insulating material. A first conductive component is attached to a first end of the casing and a second conductive component is attached to a second end of the casing. A first conductive path is formed through the tube between the first and second conductive components. The conductive path includes a fusible element having a first resistance. A second conductive path is formed along the exterior of the tubular fuse casing. The second conductive path is in parallel to the first conductive path and has a second resistance greater than the first resistance. The second conductive path includes an indicator component. The indicator component is comprised of first layer comprised of a colored material, and a second layer comprised of an electrically conductive material deposited onto the first layer. The second layer has a region of increased resistance.

Abstract: An opened fuse indicator includes a substantially transparent lens, a transparent base, and a dark colored backing layer. A sputtered metal layer is formed on the transparent base to provide a light-colored electrically conductive surface including a narrowed portion that forms a fuse link that is visible against the dark background of backing layer when viewed through the transparent lens. The conductive sputtered metal layer is electrically connected to a pair of fuse terminals to form a secondary fuse circuit in parallel with a main fuse circuit. Current directed through the secondary fuse circuit after the main circuit opens melts the sputtered metal layer so that it is no longer visible against the dark colored backing layer and the fuse is thereby indicated as opened.

Abstract: A fuse indicator is disclosed for indicating the status of a fuse. The fuse indicator includes a conductive material adapted to extend between conductive ends of a fuse, and adapted to undergo a visible change in appearance upon being subjected to electrical current above a threshold. The fuse indicator further includes an adhesive for maintaining contact between the conductive material and the conductive ends of the fuse.

Abstract: A fuse indicator is disclosed for indicating the status of a fuse. The fuse indicator includes a conductive material adapted to extend between conductive ends of a fuse, and adapted to undergo a visible change in appearance upon being subjected to electrical current above a threshold. The fuse indicator further includes an adhesive for maintaining contact between the conductive material and the conductive ends of the fuse.

Abstract: A device for indicating the conducting state of a fuse includes a heat generating material for generating heat in response to an electrical input and adapted to be coupled electrically in parallel with a fuse, and a temperature responsive material thermally coupled to the heat generating material for providing a visually discernable response if heated above a threshold temperature by the heat generating material.

Abstract: A blown fuse indicator, having an insulating element, a current-carrying element overlaying the insulating element, and a substantially transparent window. A chemical composition coats at least a portion of the insulating element. The improvement comprises a meltable link in generally parallel proximity to the insulating element. The meltable link, which can be made of solder, melts to open an indicating circuit of the blown fuse indicator upon predetermined thermal overload conditions.

Abstract: A fuse is provided which has a fuse housing with a transparent portion thereof, and a fuse element extending through the housing which is coated with a preferably non-hazardous temperature-responsive material. The temperature conditions generated at the interface between the coating and the fuse element cause the coating to leave the fuse element and deposit upon this transparent portion of the housing. The temperature-responsive coating on the fuse element will be transferred to the housing walls even where modest current overloads flow which do not immediately open the fuse. Different circuit overload conditions, including short circuit events, produce different visual indications or colorations on the transparent housings inside surfaces, which serves to identify the nature and degree of the overload problem existing in the circuit. Coatings, also capable of fluorescing under specific irradiation conditions, may be used.

Abstract: An inexpensive, compact, portable, visual indicator electrical plug-type surge protector which comprises an electrical plug body composed of a molded transparent polymer, the plug body having an extended male grounding prong and a pair of male electrical prongs on one face and a female receiving grounding inlet and a pair of female receiving inlets on the opposite face. The plug body contains in a visually indicating position, generally slightly below the surface of the plug body, a metal oxide varistor electrically connected to the electrical outlet plug so as to prevent electrical surges from passing through the surge protector from the electrical source into which the electrical plug-type surge protector is plugged and to be activated and to change color on the occurrence of an electrical surge so that the user of the surge protector will know when the electrical surge has been received and thereby be able to replace the surge protector with a new surge protector.

Abstract: An electrical fuse features a pyrotechnic smoke-generating mixture supported proximate to or adheringly supported on a meltable fuse wire element. A portion of the fuse housing is transparent. Upon either low current or high current blowout the local temperatures attendant thereto cause ignition of the pyrotechnic mixture and evolution of a cloud of colored smoke which deposits on the interior of the transparent portion of the housing to yield a readily visible indication that the fuse has blown. Additionally, when the fuse is operated at temperatures close to blowout conditions, a different colored smoke is produced to indicate incipient fuse deterioration.

Abstract: An explosively-assisted fuse is passively triggered (without electronics) by means of an auxiliary fuse in series with the main conductor. The auxiliary fuse provides a detonating voltage across a gap formed therein on melting in response to a fault current. The auxiliary fuse is configured to facilitate sizing for a variety of current loads with a standard fuse configuration.

Abstract: Apparatus is provided for automatically interrupting current in an electrical circuit before the first current peak which occurs after an excess current condition develops. The apparatus includes a main conductor in the current path which passes the current under normal operating conditions, and pyrotechnic charge means associated with the conductor at several spaced locations which segments the conductor when it is ignited. The charge means is ignited by a fuse link which senses the current and provides a rapid thermal response to excess current conditions, generating sufficient heat to ignite the charge means within a short period of time. A current limiting fuse element may be connected in parallel with the conductor for operation at higher voltages, if needed, and the entire apparatus, including the resistive sensing means, may be contained in a single housing.

Abstract: A miniature fuse comprises a casing mounted on a base member and having a meltable fuse-link housed within the casing above the upper surface of the base member. The casing has a transparent portion and a substance of contrasting color with respect to the upper surface of the base member is interposed between the casing transparent portion and the base member upper surface. The substance is heat-sensitive to temperatures at and above those at which the fuse-link melts and undergoes a reaction in which the substance is consumed by the heat generated during melting of the fuse-link. The state of the fuse can be readily determined by viewing the transparent portion of the casing and when the fuse is in its non-blown state, the color of the substance is visible through the transparent portion whereas when the fuse blows, the substance is consumed and the contrastingly colored upper surface of the base member becomes visible through the transparent portion thereby indicating the blown state of the fuse.