Fusible Element Actuated Patents (Class 337/142)
  • Patent number: 9697970
    Abstract: The present invention discloses a protective structure, plug, socket and method assuring a live wire and a neutral wire to be powered off simultaneously when overheating. The present invention limits a live wire spring plate from contacting with a live wire conductive plate, and a neutral wire spring plate from contacting with a neutral wire conductive plate, such that when the live wire spring plate and the live wire conductive plate are overheated or the neutral wire spring plate and the neutral wire conductive plate are overheated, the live wire spring plate, the live wire conductive plate, the neutral wire spring plate and the neutral wire conductive plate can be separated apart at a same time.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: July 4, 2017
    Assignee: GREEN IDEA TECH INC.
    Inventor: Hsiang-Yun I
  • Patent number: 9249961
    Abstract: A light-emitting device includes a substrate having a metal film on a first surface, a light-emitting element mounted on the first surface of the substrate and connected to the metal film, a heat sensitive circuit breaker mounted on the first surface of the substrate and connected to the metal film, a light-proof cover that covers the heat sensitive circuit breaker to block light emitted from the light-emitting element and travelling toward the heat sensitive circuit breaker, and a heat dissipating member formed on a second surface of the substrate to dissipate heat of the substrate, the second surface being opposite to the first surface.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: February 2, 2016
    Assignee: TOYOTA GOSEI CO., LTD.
    Inventors: Hideaki Kato, Shota Shimonishi
  • Patent number: 9007163
    Abstract: A device for protecting an electrical installation from surges. The device includes a protective component for protecting from overvoltages and two thermal disconnectors. Each thermal disconnector includes a respective mobile contact suitable to move from a closed position to an open position to disconnect the protective component from the electrical installation, and a respective thermosensitive element for making the mobile contact move from the closed position to the open position when the temperature of the protective component exceeds a predetermined threshold.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: April 14, 2015
    Assignee: ABB France
    Inventors: Michael Duval, Alain Lagnoux
  • Patent number: 8937524
    Abstract: A surface mount fuse in one embodiment includes an insulative body, first and second conductive and caps attached to the insulative body, each end cap defining an aperture, and a fuse element extending (i) through the insulative body and the apertures and (ii) along outside surfaces of the first and second conductive end caps in such a way that solder used to attach the first and second conductive end caps to an external medium also fastens the fuse element to the first and second end caps.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: January 20, 2015
    Assignee: Littelfuse, Inc.
    Inventors: Conrado de Leon, Gordon T. Dietsch, Edgardo Olan, John Emannuel Semana, John Song, Stephen J. Whitney
  • Patent number: 8766761
    Abstract: A rocker switch unit (1) with fuse comprising a housing (2); a rocker switch (3) lodged pivotally in the housing (2); at least a fuse lodged in the housing (2) and at least two connection elements (9) for connecting the rocker switch unit (1) with an external apparatus, wherein the two connection elements (9) are connected to each other by the fuse, when rocker switch (3) is in an ON-position. According to the invention the housing (2) provides at least one blind hole (4) for accommodating the fuse, wherein one terminal of the fuse serves as a first connection element for connecting the rocker switch unit (1) with the external apparatus. The rocker switch unit 1 can be used in any apparatus, in a network filter or as IEC entry plug.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: July 1, 2014
    Assignee: Schaffner EMV AG
    Inventor: Wolfgang Schwabenland
  • Publication number: 20140139314
    Abstract: A fuse includes first, second, and third terminals disposed on a substrate. Respective ends of one or more primary conductors of the fuse are connected to one of the first and the second terminals. The primary conductors have a first conductivity and are configured to open when a primary current between the first and the second terminals exceeds a first predetermined threshold. One or more secondary conductors have an end connected to the third terminal. The secondary conductors are configured to ignite when a secondary current through the secondary conductors exceeds a second predetermined threshold. When ignited, the secondary conductors open the primary conductors to thereby stop the primary current.
    Type: Application
    Filed: November 20, 2012
    Publication date: May 22, 2014
    Applicant: Tyco Electronics Corporation
    Inventors: Johnny Lam, Martyn A. Matthiesen, Matthew P. Galla, Jianhua Chen
  • Patent number: 8692645
    Abstract: A disconnector for electric power equipment filled with dielectric liquid, especially transformers, applicable in protecting the operation of electric power equipment. The disconnector contains at least two cylindrical current-limiting fuses situated inside a tank, and each fuse is electrically connected with external phase power supply and through fixed contacts and moving contacts of the disconnector with the active part of the piece of electric power equipment. The disconnector is characterized in that the current-limiting fuses are placed in a common housing, in which a slide with a pilot is situated, and to the slide there are inseparably fixed moving contacts, which move together with the slide when the slide makes a to-and-fro motion. The to-and-fro motion takes place as a result of the operation of a tripping device situated in the current-limiting fuses and of the compression or stretching of springs fixed to the pilot and to a fixing disk.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: April 8, 2014
    Assignee: ABB Technology AG
    Inventor: Slawomir Ciesielski
  • Publication number: 20130342304
    Abstract: A fuse unit includes a bus bar and an insulating protection portion. The bus bar has a power supply connection portion, an output connection portion, and a terminal installation recess provided around the power supply connection portion. The insulating protection portion is disposed on an outer surface of the bus bar so that portions of a surface of the bus bar in the power supply connection portion, the output connection portion, and the terminal installation recess are exposed from the insulating protection portion.
    Type: Application
    Filed: August 27, 2013
    Publication date: December 26, 2013
    Applicant: YAZAKI CORPORATION
    Inventors: Norio MATSUMURA, Hidenori KIBUSHI
  • Publication number: 20130230745
    Abstract: A current interrupting device and a secondary battery including the same. The current interrupting device includes a thermal fuse; a pair of conductive plates that are respectively connected to two opposite ends of the thermal fuse; and a sealing member which surrounds and seals the thermal fuse, wherein each of the conductive plates includes a connecting unit which is connected to the thermal fuse, and wherein at least one of the pair of conductive plates includes a deformation inducing unit which is arranged close to the connecting unit and has a smaller cross-sectional area than a cross-sectional area of the connecting unit.
    Type: Application
    Filed: July 19, 2012
    Publication date: September 5, 2013
    Applicant: SAMSUNG SDI CO., LTD.,
    Inventors: Jun-Sun Yong, Chang-Seob Kim, Sang-Jin Lee, Moon-Hong Han
  • Patent number: 8493170
    Abstract: The invention relates to an overvoltage protection device having one or more parallel-connected voltage-limiting elements which are located in one physical unit, such as varistors, diodes or means of this type configured in the form of a disc, comprising a shell apparatus in order to electrically disconnect the overvoltage-limiting elements when they are thermally overloaded, and means for indication and/or signalling of the fault state which then occurs, wherein the switching apparatus is connected via a means which can be released thermally, such as adhesive or a solder, to a connecting contact of the at least one overvoltage-limiting element, and/or to an external terminal contact or plug contact. According to the invention, the switching apparatus is in the form of a solid U-shaped switching fork, the fork tines of which run essentially parallel to the side surfaces of the overvoltage-limiting element, holding the latter in the space between the tines.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: July 23, 2013
    Assignee: DEHN + SÖHNE GmbH + Co. KG
    Inventors: Edmund Zäuner, Richard Daum, Helmut Hirschmann
  • Publication number: 20130162387
    Abstract: The present invention relates to a thermal cut off link safety fuse for use in a HVAC system. The thermal cut off link safety fuse disconnects the electrical circuit from the HVAC system's heating element when the thermal cut off link safety fuse melts upon reaching a temperature that exceeds a set temperature.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 27, 2013
    Inventor: Roy Kelley
  • Patent number: 8461956
    Abstract: An over-current protection device includes a first conductive member, a second conductive member, a resistive device and a temperature sensing switch. The first conductive member includes a first electrode foil and a second electrode foil those are formed on a same plane. The resistive device is laminated between the first conductive member and the second conductive member and exhibits positive temperature coefficient or negative temperature coefficient behavior. The temperature sensing switch can switch the first electrode foil and the second electrode foil between electrically conductive status and current-restriction status, e.g., open circuit, according to temperature variation. The threshold temperature of the temperature sensing switch is lower than the trip temperature of the resistive device.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: June 11, 2013
    Assignee: Polytronics Technology Corp.
    Inventors: Chun Teng Tseng, David Shau Chew Wang
  • Patent number: 8384509
    Abstract: The invention relates to holders for receiving fuses, with a housing having a receiving shaft, the receiving shaft containing contacts which are provided for contacting at least one fuse inserted into the receiving shaft, a cover which is adjustably arranged in the receiving shaft, a fuse holding device which is adjustably guided in the receiving shaft, wherein the cover has a unit being engageable with a guiding mechanism and which holds the cover at a predetermined position within the housing, a coupling device for detachably coupling the cover to the fuse holding device, wherein the unit of the cover is formed by feet which protrude laterally from the cover and are engageable with the guides in the housing, and wherein the guiding mechanism comprises stops and/or stop faces which are provided in the guiding mechanism, and which hold the cover in a top position of the cover.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: February 26, 2013
    Assignee: Woehner GmbH & Co., KG Elektrotechnische Systeme
    Inventors: Alex Buettner, Frank Leistner
  • Patent number: 8368502
    Abstract: A surface mount current fuse of the present invention includes a first base which has a recess and is smaller in width at the other end than at one end in the longitudinal direction, and a second base which has the same shape as the first base. The first base and the second base are combined to form a box-shaped body by joining the lower surface of the second base to the upper surface of the upper surface of the first base in such a manner that one end of the first base and the other end of the second base are in contact with each other. The recess of the first base and the recess of the second base form a space portion in which to dispose an element portion. The borderline between the first base and the second base passes through the center point on a side surface of the body. As a result, the surface mount current fuse has high production efficiency.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoyuki Washizaki, Toshiyuki Iwao, Kenji Senda, Takashi Watanabe, Kazutoshi Matsumura, Seiji Tsuda
  • Publication number: 20130027174
    Abstract: A fuse unit includes a feeding terminal, an energizing terminal and a fusion portion. The feeding terminal is fixed to a battery post to receive power from a battery. The fusion portion electrically connects the feeding terminal and the energizing terminal, and is arranged over the battery post. The feeding terminal is positioned between the energizing terminal and the fusion portion.
    Type: Application
    Filed: April 6, 2011
    Publication date: January 31, 2013
    Applicant: YAZAKI CORPORATION
    Inventors: Toshiko Masuda, Tatsuya Aoki
  • Publication number: 20120299691
    Abstract: An overcurrent breaking element-equipped terminal including a terminal main body having a terminal portion and a wire fixing portion and an overcurrent breaking element. The overcurrent breaking element includes a first lead wire connected to the terminal main body and a second lead wire connected to a terminal of a wire. The terminal main body includes an element connecting part that crimps and connects the first lead wire. The element connecting part is crimped on the first lead wire, and a double crimp terminal is crimped to connect the terminal of the wire to the second lead wire. Thus, the terminal main body, the overcurrent breaking element, and the wire are integrally provided.
    Type: Application
    Filed: February 1, 2011
    Publication date: November 29, 2012
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Shinichi Takase, Hiroki Hirai, Ryoya Okamoto, Masakuni Kasugai, Yuko Kinoshita
  • Publication number: 20120293294
    Abstract: Redundant fuse wire apparatus and redundant release devices, such as those used to release deployable appendages, such as solar array and reflectors disposed on satellites, and the like. An exemplary redundant release device comprises a restraint release mechanism having one or more restraint release arms, a redundant release device comprising a segmented spool having a plurality of segments that are constrained from separating by spring restraint tape releasably secured to the restraint release arms, a redundant fuse wire assembly comprising primary and redundant positive contacts, a common negative contact, primary and redundant fuse wires respectively connected between the primary positive and common negative contacts and the redundant positive and common negative contacts that respectively wrap around the opposed positive contact and the restraint release arms, and an electrical power source for heating and severing the fuse wires.
    Type: Application
    Filed: May 17, 2011
    Publication date: November 22, 2012
    Inventor: Varouj Baghdasarian
  • Publication number: 20120293295
    Abstract: A fuse unit includes a fuse element and an insulative resin part. A terminal connecting part is formed in the fuse element. Then insulative resin part is arranged on an outer surface of the fuse element. A temporary bolt fixing part which temporarily fixes a bolt to the terminal connecting part is provided in the fuse element.
    Type: Application
    Filed: February 2, 2011
    Publication date: November 22, 2012
    Applicant: YAZAKI CORPORATION
    Inventors: Hidenori Kibushi, Yusuke Matsumoto, Toshiko Masuda
  • Patent number: 8302883
    Abstract: A thermal fuse integrated into an electrical circuit powering a heater element having a positive temperature coefficient includes at least one terminal in electrical connection with the heater element thereby connecting the heater element to a power source, and a solder jacket that mechanically retains the electrical connection between the terminal and heater element, wherein a biasing load is applied to the terminal when retained by the solder jacket, and wherein the terminal breaks connection with the heater element under the force of the bias when the solder jacket melts should the heater element overheat. By selecting the solder material forming the solder jacket according to its melt temperature, a temperature specific overheat protection for a heated fuel injector can be provided. Since the injector's metering circuit is separate from the thermal fuse circuit, the fuel injector remains operational even after the heater circuit is opened.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 6, 2012
    Assignee: Delphi Technologies, Inc.
    Inventor: Jason C. Short
  • Patent number: 8258913
    Abstract: A fuse element includes a first conductive part and a second conductive part, and a fusible body which electrically connect the first conductive part and the second conductive part, and fuses when an overcurrent flows itself. The fusible body is formed in a plate shape. The fusible body has a first connection portion, a second connection portion and a fusing member, both ends of the fusing member being connected to the first connection portion and the second connection portion respectively. The fusing member is displaced from the first connection portion and the second connection portion in a first direction being intersect with a second direction in which the first and second connection portions are arranged.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: September 4, 2012
    Assignee: Yazaki Corporation
    Inventor: Norio Matsumura
  • Publication number: 20120194315
    Abstract: A circuit protection device is configured to protect circuit elements under any one of the following three activation conditions: an over current condition, an over temperature condition, and an activation control current received by a heater element. The circuit element includes first and second electrodes, and the heater element. A sliding contact is connected by a sensing element to the first electrode, second electrode, and heater element, thereby bridging and providing a conductive path between each. A spring element is held in tension by, and exerts a force against, the sliding contact. Upon detection of any one of three activation conditions, the sensing element releases the sliding contact and the force exerted by the spring element moves the sliding contact to another location on the substrate at which the sliding contact no longer provides a conductive path between the first electrode, second electrode, and heater element.
    Type: Application
    Filed: February 2, 2011
    Publication date: August 2, 2012
    Inventors: Martyn A. Matthiesen, Anthony Vranicar, Wayne Montoya
  • Publication number: 20120188050
    Abstract: A fuse unit includes a unit body and an auxiliary fuse unit. The unit body includes a bus bar provided with a power supply connector, first output connectors and second output connectors and fusible members, and an insulation protector provided on the periphery of the bus bar. The auxiliary fuse unit includes an auxiliary bus bar provided with an auxiliary power supply connector and an auxiliary output connector and is detachably installed to the unit body.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Inventor: Mami NOHARA
  • Publication number: 20120139687
    Abstract: An electric fuse comprising two fuse links connected in parallel. Each fuse link includes a central portion, a first terminal portion, a second terminal portion on the opposite end of the central portion, the fuse link having a first surface, and a second surface opposite of the first surface. The fuse links are connected in parallel. Springs are tensioned on the fuse links, engaged with the central portion and the first terminal portion tensioned to separate the top fuse surface from the fusible element during short circuit. The interior surfaces of the fuse links are coated with a tin alloy to prevent oxidation of the operative surface.
    Type: Application
    Filed: December 1, 2011
    Publication date: June 7, 2012
    Inventors: Adrian Traian Plesca, Codrin-Gruie Cantemir
  • Patent number: 8188627
    Abstract: A temperature protection device for a brushless DC Motor, wherein a thermal fusing type protector is provided at a depression formed on a casing of the plastic-packaged brushless DC Motor. In this way, the thermal fusing type protector can be provided conveniently at a position where the casing temperature is highest after plastic packaging, and if the protector is fused due to high temperature, it can be replaced easily.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: May 29, 2012
    Assignees: Panasonic Corporation, Panasonic Ecology Systems Guangdong Co., Ltd.
    Inventors: Decong Yang, Zewei Rao, Hanzhong Zhou, Zhengnan Zeng, Shufeng Shi, Hitoshi Taya
  • Publication number: 20120126929
    Abstract: The present disclosure discloses a current fuse device. The current fuse device comprises: an insulating box having a cavity; a first conductor fixed to the insulating box with a first outer end and a first inner end; a second conductor fixed to the insulating box with a second outer end and a second inner end; and at least one elastic member disposed on at least one of the first conductor and the second conductor and inside the cavity. The elastic member forms an electrical connection between the first inner end of the first conductor and the second inner end of the second conductor. The elastic member has an elastic potential energy to break the electrical connection when a short circuit occurs.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 24, 2012
    Inventors: Zhiwei TONG, Jianhua Zhu, Weixin Zheng, Hao Hu
  • Publication number: 20120068808
    Abstract: A monitoring module for a fusible switch disconnect device includes an open fuse detecting element and wire leads for completing an electrical connection with a fuse.
    Type: Application
    Filed: November 30, 2011
    Publication date: March 22, 2012
    Inventors: Matthew R. Darr, Joseph James Ventura
  • Patent number: 8080861
    Abstract: A semiconductor device includes an electric fuse and first and second large area wirings for applying a voltage to the electric fuse. The electric fuse includes a fuse unit which includes an upper-layer fuse wiring, a lower-layer fuse wiring, and a via connecting the upper-layer fuse wiring and the lower-layer fuse wiring, an upper-layer lead-out wiring which connects the upper-layer fuse wiring and the first large area wiring and has a bent pattern, and a lower-layer lead-out wiring which connects the lower-layer fuse wiring and the second large area wiring and has a bent pattern.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: December 20, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Hiroshi Tsuda, Yoshitaka Kubota, Hiromichi Takaoka
  • Patent number: 8081057
    Abstract: A current protection device comprises a substrate having an upper portion and a lower portion; a fusing layer installed between the upper portion and the lower portion; ends of the fusing layer exposed from the substrate; a cavity formed near surfaces of the fusing layer for providing a space to receive the fusing layer as the fusing layer fuses; and an end electrode having three layers including a silver thin layer, a nickel thin layer and a tin thin layer; the end electrode being formed as a conductive electrode. The method for forming the same is provided.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: December 20, 2011
    Inventor: Hung-Chih Chiu
  • Patent number: 8013712
    Abstract: An overvoltage protection device includes a slide-in protective member and at least one non-linear resistance element in the slide-in protective member. A cable is connected to the at least one non-linear resistance element by solder, and a sliding member is biased against the cable. The sliding member is capable of reciprocal movement in the slide-in protective member. A visual indicator lever is engaged with the sliding member so that movement of the sliding member moves the visual indicator. A positioning element is engaged with the sliding member so that movement of the sliding member moves the positioning element.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: September 6, 2011
    Assignee: KIWA spol, s r.o.
    Inventor: Jozef Cerni{hacek over (c)}ka
  • Publication number: 20110210813
    Abstract: A protector for a three-phase electric motor has a container with a housing and a metal plate secured thereto. A protrusion is provided in the housing. Three conductive terminal pins, each with a fixed contact, protrude into the housing through the metal plate. A thermally responsive plate is connected to the three moveable contacts. The thermally responsive plate is dish shaped and reverses its direction of curvature at a predetermined temperature. Three moveable contacts are secured to the thermally responsive plate. An elastic member extends between the protrusion and the thermally responsive plate. A rotation member prevents the thermally responsive plate from rotating, thereby maintaining the moveable contacts in opposition to the fixed contacts. The conductive terminal pins are located at a neutral point side of phase windings of a three-phase motor so that AC current flowing into the three-phase motor is interrupted.
    Type: Application
    Filed: November 5, 2008
    Publication date: September 1, 2011
    Applicant: UBUKATA INDUSTRIES CO., LTD.
    Inventor: Isao Higashikata
  • Patent number: 8004384
    Abstract: Fused load interrupters have up to now used claw terminals or screw connections for connecting to horizontal busbars in a switchgear unit. Fused load interrupters have not been suitable until now for connecting to vertical busbars in switchgear units. At least one embodiment of the invention provides a fused load interrupter with plug contacts, such as are known from load interrupters with fuses, thereby allowing fused load interrupters to replace the more expensive load interrupters with fuses in switchgear units with vertical busbars.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: August 23, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventor: Alfred Stang
  • Publication number: 20110193674
    Abstract: The invention relates to an overvoltage protection device having one or more parallel-connected voltage-limiting elements which are located in one physical unit, such as varistors, diodes or means of this type configured in the form of a disc, comprising a shell apparatus in order to electrically disconnect the overvoltage-limiting elements when they are thermally overloaded, and means for indication and/or signalling of the fault state which then occurs, wherein the switching apparatus is connected via a means which can be released thermally, such as adhesive or a solder, to a connecting contact of the at least one overvoltage-limiting element, and/or to an external terminal contact or plug contact. According to the invention, the switching apparatus is in the form of a solid U-shaped switching fork, the fork tines of which run essentially parallel to the side surfaces of the overvoltage-limiting element, holding the latter in the space between the tines.
    Type: Application
    Filed: July 6, 2009
    Publication date: August 11, 2011
    Applicant: DEHN + SOHNE GmbH + Co. KG
    Inventors: Edmund Zäuner, Richard Daum, Helmut Hirschmann
  • Publication number: 20110084793
    Abstract: A single-phase apparatus and method for protecting for all AC power wires/lines and combinations thereof. The present invention prevents (1) the hazardous condition occurring at the wall receptacle, arising from accidental reversal of the line wire with the neutral wire, from adversely affecting at least one peripheral device in the line, and (2) the overheating and destruction of components in an over-voltage protection circuit by providing an efficient circuit configuration which assures a rapid simultaneous disconnect of both the hot line and neutral power lines.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 14, 2011
    Applicant: Monster Cable Products, Inc.
    Inventor: Demian Martin
  • Patent number: 7911314
    Abstract: A electric circuit includes a connection to a current source, an electric load, and a thermal-mechanical fuse which, in the case of failure at an excessive heat emission, interrupts the current supply to the load, which is effectuated by a feeder in which is arranged a spring having two ends, at least one end is soldered to a solder point provided in the feed line. The one solder point is under a mechanical pretension caused by the restoring force of a spring, that separates the solder joint between the spring and the solder point in the feed line, when the solder melts at the solder point.
    Type: Grant
    Filed: July 21, 2007
    Date of Patent: March 22, 2011
    Inventors: Alexander Dauth, Jürgen Paul, Rolf Merte, Michael Luppold
  • Publication number: 20110012704
    Abstract: A protection element and a secondary battery device employing the protection element are provided for stably retaining a flux on a soluble conductor at a predetermined position, so as to enable appropriate blowout of the soluble conductor in the event of an abnormality. The protection element has a soluble conductor which is disposed on an insulation baseboard, and which is connected to a power supply path of a device targeted to be protected, and which causes a blowout when a predetermined abnormal electric power, amount is supplied. A flux is coated on a surface of the soluble conductor, and an insulation cover member is mounted on the baseboard and covers the soluble conductor. The protection element also includes a stepped portion for retaining the flux at a predetermined position in contact with the flux, and the stepped portion is formed opposite to the soluble conductor on an interior face of the insulation cover member.
    Type: Application
    Filed: May 14, 2009
    Publication date: January 20, 2011
    Applicant: Sony Chemical & Information Device Corporation
    Inventors: Yuji Kimura, Takahiro Asada, Yoshihiro Yoneda, Kazuaki Suzuki
  • Patent number: 7839257
    Abstract: The present invention teaches an overvoltage protection device that includes at least one non-linear resistance element and a single cut-off device coupled with the at least one non-linear resistance element to disable the at least one non-linear resistance element when the at least one non-linear resistance element reaches a pre-determined temperature. The single cut-off device may include stranded wire, a first solder having a first melting point connecting the stranded wire to the at least one non-linear resistance element, and a second solder having a second melting point, higher than the first melting point, connecting the stranded wire to the at least one non-linear resistance element. The single cut-off device may further include a shifting part that shifts when the at least one non-linear resistance element heats the first solder to the first melting point.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: November 23, 2010
    Assignee: Kiwa Spol. S.R.O.
    Inventor: Jozef Cernicka
  • Patent number: 7808361
    Abstract: A dual protection device includes a cover, a first protection unit, a second protection unit and a base. The first protection unit includes an elastic contact piece and a first conductive member. The elastic contact piece has a first end fixed to the cover and a second end including a first contact point. The first conductive member has a second contact point to contact with the first contact point. The elastic contact piece bends to separate the first contact point from the second contact point when overloaded. The second protection unit has a second conductive member, which is respectively connected with the first conductive member and a second terminal by fuse members. A biasing member is compressed between the second conductive member and the base so as to separate the second terminal from the second conductive member when the fuse members melt.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: October 5, 2010
    Inventor: Tsung Mou Yu
  • Publication number: 20100245025
    Abstract: A surface mount fuse in one embodiment includes an insulative body, first and second conductive and caps attached to the insulative body, each end cap defining an aperture, and a fuse element extending (i) through the insulative body and the apertures and (ii) along outside surfaces of the first and second conductive end caps in such a way that solder used to attach the first and second conductive end caps to an external medium also fastens the fuse element to the first and second end caps.
    Type: Application
    Filed: March 25, 2009
    Publication date: September 30, 2010
    Applicant: Littelfuse, Inc.
    Inventors: Conrado de Leon, Gordon T. Dietsch, Edgardo Olan, John Emannuel Semana, John Song, Stephen J. Whitney
  • Patent number: 7791448
    Abstract: A dual protection device for a circuit includes a first protection unit and a second protection unit functioning independently. The first protection unit includes an elastic contact piece having a first contact point and a conductive member having a second contact point to contact with the first contact point. When overloaded, the elastic contact piece is deformed and bent toward an opposite direction to separate the first contact point from the second contact point, thereby protecting the circuit. The second protection unit has a fuse member and a second terminal. The fuse member is connected between the conductive member and the second terminal. If the first protection unit does not function as expected and the temperature climbs to a predetermined value, the fuse member melts. The conductive member is disconnected from the second terminal, thereby protecting the circuit.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: September 7, 2010
    Inventor: Tsung Mou Yu
  • Patent number: 7750788
    Abstract: A dual protection device for a circuit includes a first protection unit and a second protection unit functioning independently. The first protection unit includes an elastic contact piece having a first contact point and a first conductive member having a second contact point to contact with the first contact point. When overloaded, the elastic contact piece is deformed and bent toward an opposite direction to separate the first contact point from the second contact point, thereby protecting the circuit. The second protection unit has a flexible second conductive member disposed between the first conductive member and the second terminal. A fuse member forces a free end of the second conductive member to connect with the second terminal. When the fuse member melts due to high temperature, the free end of the second conductive member is separated from the second terminal, thereby protecting the circuit.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: July 6, 2010
    Inventor: Tsung Mou Yu
  • Patent number: 7737816
    Abstract: A dual protection device for a circuit includes a first protection unit and a second protection unit functioning independently. The first protection unit includes an elastic contact piece which has a first contact point. A first conductive member has a second contact point to contact with the first contact point. The elastic contact piece is deformed and bent toward an opposite direction to separate the first contact point from the second contact point when overloaded. A second protection unit has a second conductive member which is connected between the second terminal and the first conductive member. A fuse member and a biasing member are disposed at two opposite sides of the second conductive member. When the fuse member melts due to high temperature, the second conductive member is pushed by the biasing member to be separated from the second terminal.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: June 15, 2010
    Inventor: Tsung Mou Yu
  • Publication number: 20100116903
    Abstract: A thermal fuse integrated into an electrical circuit powering a heater element having a positive temperature coefficient includes at least one terminal in electrical connection with the heater element thereby connecting the heater element to a power source, and a solder jacket that mechanically retains the electrical connection between the terminal and heater element, wherein a biasing load is applied to the terminal when retained by the solder jacket, and wherein the terminal breaks connection with the heater element under the force of the bias when the solder jacket melts should the heater element overheat. By selecting the solder material forming the solder jacket according to its melt temperature, a temperature specific overheat protection for a heated fuel injector can be provided. Since the injector's metering circuit is separate from the thermal fuse circuit, the fuel injector remains operational even after the heater circuit is opened.
    Type: Application
    Filed: November 12, 2008
    Publication date: May 13, 2010
    Inventor: Jason C. Short
  • Patent number: 7696854
    Abstract: A heavy current coupling that includes an electrically conductive elastic fastening and fuse element supported by the housing. The fastening and fuse element is configured to electrically connect first and second contacts, with the first and second contacts being spaced from one another. Wherein the fastening and fuse element burns through when a predetermined maximum current is exceeded, thereby interrupting the electrical connection between the first and second contacts.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: April 13, 2010
    Assignee: Amphenol Tuchel Electronics GmbH
    Inventors: Henning Rittstieg, Wolfgang Langhoff
  • Publication number: 20100066477
    Abstract: A fuse element includes a substrate disposed between first and second terminals. The substrate includes an electrically insulative material. A conductive film is disposed on a first surface of the substrate and in electrical contact with the first terminal and second terminals.
    Type: Application
    Filed: April 17, 2009
    Publication date: March 18, 2010
    Applicants: Littlefuse, Inc., Purdue Technology Center
    Inventors: Stephen J. Whitney, William Travis, Jeffrey P. Youngblood, Sarah M. Book, Edward D. Barriball, Milea J. Kittle
  • Publication number: 20100023284
    Abstract: A circuit protection device includes: (i) a housing configured to hold a fuse; (ii) a first contact configured to connect the fuse to a power source; (iii) a second contact configured to connect the fuse to a load; and (iv) a sensing circuit placed in parallel with the fuse, the sensing circuit configured to operate on a leakage current running through the circuit after the fuse opens.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 28, 2010
    Applicant: LITTELFUSE, INC.
    Inventors: William G. Rodseth, Daniel Stanek, Daniel Gilman
  • Publication number: 20100019877
    Abstract: Fused load interrupters have up to now used claw terminals or screw connections for connecting to horizontal busbars in a switchgear unit. Fused load interrupters have not been suitable until now for connecting to vertical busbars in switchgear units. At least one embodiment of the invention provides a fused load interrupter with plug contacts, such as are known from load interrupters with fuses, thereby allowing fused load interrupters to replace the more expensive load interrupters with fuses in switchgear units with vertical busbars.
    Type: Application
    Filed: September 27, 2007
    Publication date: January 28, 2010
    Inventor: Alfred Stang
  • Patent number: 7639114
    Abstract: A temperature fuse protection device uses a hot melt metal to rivet for connecting two terminals in the circuit that are separated for making the two terminals electrically-connected and the circuit complete. There is a spacing in between the two free ends of the two terminals when no external force is being imposed. When an electric overloading or high circuit temperature event occurs, the hot melt metal would be heated to melt and break, which would then make the free ends of the two terminals to be disconnected, and therefore, the circuit will be at “OFF” status.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: December 29, 2009
    Inventor: Tsung-Mou Yu
  • Patent number: 7626483
    Abstract: A self-recovering current limiting fuse protecting a secondary battery having a high rated voltage thanks to its improved breakdown voltage, expanding the application range, shortening the charging time, and realizing maintenance-free. The self-recovering current limiting fuse is made by fluid-dispersing solid conductive particles into a liquid matrix between electrodes. A current limiting operation through evaporation/spreading of the solid conductive particles and a conducting state brought about through collection of the solid conductive particles between the electrodes by dielectrophoretic force of the solid conductive particles are realized repeatedly, and a current limiting operation through evaporation/spreading of the solid conductive particles by overcurrent is realized.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: December 1, 2009
    Assignee: Kyushu Institute of Technology
    Inventors: Shinya Ohtsuka, Masayuki Hikita
  • Publication number: 20090160597
    Abstract: A high voltage fuse which includes at least one fuse terminal located at a distal end of the fuse housing. One face of the fuse terminal includes an elongated groove and an opposite face includes at least two elongated grooves. An aperture extends through the fuse terminal from the first face to the second face. The first face is adapted for use with an eyebolt connector component to attach a single conductor to be in direct contact with the fuse terminal. The second face is adapted for use with a parallel groove connector clamping component to attach a pair of conductors in direct contact with the fuse terminal. Alternatively, the grooves on the first and second faces may be provided on a single face of the fuse terminal. The fuse terminal may also serve the function of a spade connector. Thus, the fuse terminal provides improved versatility to allow a variety of connectors to be used therewith.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 25, 2009
    Applicant: THOMAS & BETTS INTERNATIONAL, INC.
    Inventors: Dan Gardner, Gene Wood
  • Publication number: 20090065565
    Abstract: An application for preventing the reuse of a medical device includes a disposable medical device and a handle for accepting the disposable medical device. The handle physically supports the disposable medical device. A circuit for identifying the disposable medical device is imbedded within the disposable medical device and a circuit for reading a status of the identification is located in the handle. Whether the disposable medical device has been used is determined based upon the status.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 12, 2009
    Applicant: VASCULAR TECHNOLOGIES, INC.
    Inventor: Michael Cao