With Switch Protective Means (for Fuse Structure) Patents (Class 337/222)
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Patent number: 9378911Abstract: A fuse includes: a conductive fuse element having a pair of connection terminals formed by bending two ends of a conductive wire rod in such a manner that the ends extend parallel with each other, and a meltable portion provided between the pair of connection terminals and formed to have a smaller cross-sectional area than the remainder of the fuse element; and an insulative shape retaining member fixed to the fuse element and retaining the shape of the fuse element.Type: GrantFiled: August 12, 2013Date of Patent: June 28, 2016Assignee: YAZAKI CORPORATIONInventor: Asako Takahashi
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Patent number: 9224567Abstract: A resin molded product comprises a fiber to which a metal heating element is attached, a first attaching part that standing upright on a main body of the resin molded product to attach and fix one part of the metal heating element, a second attaching part standing upright on the main body correspondingly to the first attaching part to attach and fix the other part of the metal heating element, and a rib extended continuously and integrally from the first attaching part to the second attaching part and standing upright on the main body, wherein a gate position is provided in the vicinity of the first attaching part on a straight line connecting the first attaching part to the second attaching part in a back side of the resin molded product to set an orientation of the fiber formed in the rib in the extending direction of the rib.Type: GrantFiled: February 22, 2012Date of Patent: December 29, 2015Assignee: Yazaki CorporationInventor: Fumitoshi Henmi
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Publication number: 20130181806Abstract: A fuse unit includes: a bus bar including a plurality of fusible parts interposed between a power supply side terminal and a plurality of load side terminals; and an insulating resin portion formed by insert molding using the bus bar as an insert component. The insulating resin portion includes: first and second resin portions respectively arranged at peripheries on the sides of the power supply side terminal and the load side terminals with respect to the fusible parts; and a plurality of coupling portions coupling the first resin portion and the second resin portion in a position outside each of the fusible parts. Each of the coupling portions is formed such that a reinforcement portion having a lower heat shrinkage rate than the insulating resin portion and having a higher strength than the insulating resin portion is an insert component. The reinforcement portion is provided using the bus bar.Type: ApplicationFiled: January 28, 2013Publication date: July 18, 2013Applicant: YAZAKI CORPORATIONInventor: YAZAKI CORPORATION
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Patent number: 6806806Abstract: A fuse and filter arrangement having a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse includes of an electrical conductor wherein a portion of the conductor is surrounded by an internal electrode, which is then surrounded by a layer of polymeric positive temperature coefficient (PTC) material, which is then surrounded by a conductive material similar to that of the internal electrode. The fuse and filter arrangement includes a plurality of in-line and bypass fuses combined with a differential and common mode filter, which itself consists of a plurality of common ground conductive plates maintaining first and second electrode plates between the various conductive plates, all of which are surrounded by a material having predetermined electrical characteristics to provide fail safe filter and circuit protection.Type: GrantFiled: February 18, 2003Date of Patent: October 19, 2004Assignee: X2Y Attenuators, LLCInventor: Anthony A. Anthony
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Patent number: 6710698Abstract: A semiconductor fuse for electrical consumers (2) is disclosed, in which a semiconductor switch (3) is disposed between the battery (1) serving as a current- or voltage source and the consumer (2). Parallel to the semiconductor switch (3), there is a short circuit-proof bypass (4) with an integrated wakeup circuit (5), which cooperates with the semiconductor switch (3).Type: GrantFiled: June 4, 2002Date of Patent: March 23, 2004Assignee: Robert Bosch GmbHInventors: Joerg Jehlicka, Arndt Wagner
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Patent number: 6411498Abstract: A sintered fuse is structured by forming a sintered body of metal powders into a wire form or a plate form. As for the metal powders, powders of the grain diameter of approximately a few &mgr;m, such as Cu or Al, can be used and different types of metal powders can be mixed. In addition, by interposing this sintered fuse (4) between, for example, the negative electrode (12) and the second external lead (3), a solid electrolytic capacitor is formed. As a result, a fuse which melts at the same level of temperature as in a prior art can be obtained without utilizing toxic Pb and a solid electrolytic capacitor, which has this fuse built into it and which is safe and highly reliable, can be obtained.Type: GrantFiled: December 13, 2000Date of Patent: June 25, 2002Assignee: Rohm Co., Ltd.Inventor: Shinji Nakamura
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Patent number: 6388856Abstract: The present invention relates to a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse is comprised of an electrical conductor wherein a portion of the conductor is surrounded by an internal electrode, which is then surrounded by a layer of polymeric positive temperature coefficient (PTC) material, which is then surrounded by a conductive material similar to that of the internal electrode. Various hybrid combinations are also contemplated where in-line and/or bypass fuses are combined with other circuit components. One example is, a plurality of in-line and bypass fuses combined with a differential and common mode filter, which itself consists of a plurality of common ground conductive plates maintaining first and second electrode plates between the various conductive plates, all of which are surrounded by a material having predetermined electrical characteristics to provide fail safe filter and circuit protection.Type: GrantFiled: August 24, 2001Date of Patent: May 14, 2002Assignee: X2Y Attenuators, LLCInventor: Anthony A. Anthony
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Patent number: 6282074Abstract: The present invention relates to a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse is comprised of an electrical conductor wherein a portion of the conductor is surrounded by an internal electrode, which is then surrounded by a layer of polymeric positive temperature coefficient (PTC) material, which is then surrounded by a conductive material similar to that of the internal electrode. Various hybrid combinations are also contemplated where in-line and/or bypass fuses are combined with other circuit components. One example is, a plurality of in-line and bypass fuses combined with a differential and common mode filter, which itself consists of a plurality of common ground conductive plates maintaining first and second electrode plates between the various conductive plates, all of which are surrounded by a material having predetermined electrical characteristics to provide fail safe filter and circuit protection.Type: GrantFiled: May 31, 2000Date of Patent: August 28, 2001Assignee: X2Y Attenuators, L.L.C.Inventor: Anthony A. Anthony
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Patent number: 6157528Abstract: The present invention relates to a polymer fuse apparatus that provides bypass fuse protection. A polymer bypass fuse is comprised of an electrical conductor wherein a portion of the conductor is surrounded by an internal electrode, which is then surrounded by a layer of polymeric positive temperature coefficient (PTC) material, which is then surrounded by a conductive material similar to that of the internal electrode.Various hybrid combinations are also contemplated where in-line and/or bypass fuses are combined with other circuit components. One example is, a plurality of in-line and bypass fuses combined with a differential and common mode filter, which itself consists of a plurality of common ground conductive plates maintaining first and second electrode plates between the various conductive plates, all of which are surrounded by a material having predetermined electrical characteristics to provide fail safe filter and circuit protection.Type: GrantFiled: January 28, 1999Date of Patent: December 5, 2000Assignee: X2Y Attenuators, L.L.C.Inventor: Anthony A. Anthony
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Patent number: 6064292Abstract: 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.Type: GrantFiled: December 31, 1998Date of Patent: May 16, 2000Assignee: Lucent Technologies Inc.Inventor: David J. Pongracz
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Patent number: 5903209Abstract: An encapsulated fuse assembly with a corona shield for use in high voltage underground power distribution systems. The fuse assembly includes a fuse encapsulated within an insulative outer housing. The outer surface of the fuse is coated with an electrically conductive material which is in electrical connection with one of the fuse terminals and extends along the outer surface of the fuse body to a point intermediate the other terminal leaving a portion of the fuse body not coated with the conductive material. Preferably, at least the terminal of the fuse not in contact with the conductive material is enveloped by an electrically conductive insert disposed within the insulative outer housing which along with the conductive coating establish an effective corona shield around the fuse without providing an alternate electrical circuit between the fuse terminals.Type: GrantFiled: August 7, 1998Date of Patent: May 11, 1999Assignee: Thomas & Betts International, Inc.Inventor: Frank Stepniak
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Patent number: 5901045Abstract: A device for isolating a hazardous connection on a circuit board includes an elongated enclosure having a bore extending therethrough and a slot extending longitudinally from a first end of the enclosure. A component such as a fuse, having leads on both ends, is advanced through the bore until one of the leads, bent orthogonally to the enclosure, becomes secured in a distal end (pocket) of the slot. The length of the enclosure is determined such that when the lead is engaged in the distal end of the slot, a portion of the enclosure extends over the lead to isolate any connections made by that lead from external contact. In a preferred embodiment, a second slot is provided on the other end of the enclosure wherein a second lead may then be bent orthogonally to the device, and parallel with the first lead, to isolate both leads of the component. The protective device is advantageously transparent to allow for monitoring of the component being isolated.Type: GrantFiled: March 6, 1997Date of Patent: May 4, 1999Assignee: Cabletron Systems, Inc.Inventors: Ernest Bencivenga, Ronald P. Fotino
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Patent number: 4253081Abstract: Disclosed is a mechanism for preventing the operation of a circuit interrupting device during the occurrence of excessive overcurrent. The circuit interrupting device includes an insulative housing having circuit-connectable opposed terminals thereon. Included within the housing is an arcing rod which is electrically connected to one terminal and which, in response to an overcurrent, moves away from a stationary contact electrically connected to the other terminal. Arcing rod movement elongates an arc formed between the arcing rod and the contact in an arc extinguishing environment to extinguish the arc and interrupt the circuit. The mechanism of the invention includes a shoulder on the arcing rod and one or more magnetic yokes positioned adjacent, but normally out of contact with, the shoulder. When an overcurrent through the device occurs which exceeds the device's rating, flux generated by current flow through the arcing rod moves the yoke to engage the shoulder thus preventing arcing rod movement.Type: GrantFiled: April 4, 1979Date of Patent: February 24, 1981Assignee: S & C Electric CompanyInventor: Thomas J. Tobin
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Patent number: 3931602Abstract: This invention relates to a self-contained thermal limiter construction which can be used to limit one or more electrical circuits and comprises a thermally responsive device having leads for being interconnected into such electrical circuit or circuits and one or more of electrically operated heaters disposed adjacent the device and each being adapted to cause the device to open the circuit or circuits when heated by the respective heater a certain amount.Type: GrantFiled: February 24, 1975Date of Patent: January 6, 1976Assignee: Micro Devices CorporationInventor: Emil Robert Plasko
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Patent number: RE29430Abstract: This invention relates to a thermal limiter which can be used to limit one or more electrical circuits, such as multiple circuits in which one of the circuits is a primary circuit and the other circuits are secondary circuits energized or controlled by the primary circuit. The limiter of this invention is a unitary construction which can be connected to the primary and secondary circuits to control the same. A new method of making the limiter is included in this invention. This invention can be used in combination with a transformer for a television set in combination with its primary and secondary circuits, in combination with an air conditioning system, such as for automobiles, or in combination with other devices, as desired.Type: GrantFiled: April 4, 1975Date of Patent: October 4, 1977Assignee: Emerson Electric Co.Inventor: Emil Robert Plasko