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公开(公告)号：US20240212952A1
公开(公告)日：2024-06-27
申请号：US18554682
申请日：2022-02-04
发明人： Satoshi Yoshihara , Takuto Abe , Hiroaki Nishiono , Kenji Shibata
摘要： An input device includes a fixed electrode, a reference electrode, a switch electrode, an operating member, and a moving electrode. The moving electrode is provided for the operating member and is movable integrally with the operating member. The moving electrode includes a first connection portion and a second connection portion. Subjecting the operating member to no press operation keeps the moving electrode out of contact with the fixed electrode, the reference electrode, or the switch electrode. Subjecting the operating member to a press operation brings the first connection portion into contact with the reference electrode and then brings the second connection portion into contact with the switch electrode.
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公开(公告)号：US20240038469A1
公开(公告)日：2024-02-01
申请号：US17878207
申请日：2022-08-01
CPC分类号： H01H47/002 , G01R31/327 , H01H50/44 , H01H50/18 , H01H50/54 , H01H50/641 , H01H89/00
摘要： An acoustic sensing system for detecting movement of an ultra-fast actuator in a hybrid circuit interrupter is disclosed. The system comprises a number of acoustic sensors structured to perform active or passive position sensing. For active sensing, the sensors emit sound waves toward a number of targeted portions of the actuator moving assembly and detect the positions of the targets based on acoustic signals reflected back to the sensors by the targets. For passive sensing, the sensors detect acoustic wavelets generated as a result of the moving assembly components moving during opening and closing operations. Acoustic signals can propagate through air or solids and thus the sensors can be mounted in a variety of locations within the circuit interrupter. Acoustic sensors are particularly well-suited for the circuit interrupter environment, as they are resilient to the environmental and external factors, such as dust, that can affect the performance of non-acoustic sensors.
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公开(公告)号：US11869739B2
公开(公告)日：2024-01-09
申请号：US18121898
申请日：2023-03-15
申请人： Littelfuse, Inc.
IPC分类号： H01R9/24 , H01H85/20 , H01H85/143 , H01H85/22 , H01H11/00 , H01H69/02 , H01H85/02 , H01H89/00 , H02G5/02 , H01H85/08 , H01H85/175 , H01R4/30
CPC分类号： H01H85/2045 , H01H11/00 , H01H69/02 , H01H85/0241 , H01H85/143 , H01H85/22 , H01H89/00 , H01R9/245 , H02G5/02 , H01H85/08 , H01H85/1755 , H01R4/308 , H01R9/2491
摘要： An electrical device assembly and method to attach an isolated single stud fuse assembly to an electrical device are disclosed. The electrical device assembly consists of multiple studs, one or more of which is replaced with the isolated single stud fuse. A conductive copper landing zone receives an electrically isolated steel stud. When the landing pad assembly is orbital riveted into a plastic housing of the electrical device, the stud is locked into the housing permanently. Electrical devices such as disconnect switches and power distribution modules, both of which include multiple studs, are good candidates for being adapted with the single stud fuse assembly.
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公开(公告)号：US11776784B2
公开(公告)日：2023-10-03
申请号：US17277918
申请日：2019-09-21
发明人： Chang Peng , Iqbal Husain , Qin Huang , Landon K. Mackey
CPC分类号： H01H89/00 , H02H1/0007 , H02H3/08
摘要： Various examples are provided related to direct current circuit breakers and their control methods. In one example, among others, a hybrid direct current circuit breaker (DCCB) includes an ultrafast mechanical switch (UFMS) connected in series with a commutating switch (CS) or auxiliary circuit breaker (ACB); a main breaker (MB) including a series of η semiconductor switching stages in parallel with the UFMS and CS or ACB; and control circuitry that can turn off individual switching stages in a defined order in response to opening contacts of the UFMS. The switching stages can be turned off based upon a dielectric strength across the contacts as they open. In another example, a method includes opening contacts of an UFMS connected in series with a CS or ACB; and turning off individual switching stages of a series of η semiconductor switching stages connected across the UFMS and the CS or ACB.
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公开(公告)号：US11764025B2
公开(公告)日：2023-09-19
申请号：US17485963
申请日：2021-09-27
申请人： DEHN SE
发明人： Arnd Ehrhardt , Peter Zahlmann , Sven Wolfram
CPC分类号： H01H89/00 , H01H39/006 , H01H85/0039 , H01H85/12 , H01H85/185
摘要： The invention relates to a triggered fuse for low-voltage applications for protecting devices that can be connected to a power supply system, in particular surge protection devices, consisting of at least one fusible conductor which is located between two contacts and is arranged in a housing, and also consisting of a trigger device for controlled disconnection of the fusible conductor in the event of malfunctions or overload states of the respective connected device, wherein an arc quenching medium is introduced into the housing. The at least one fusible conductor has a plurality of conventional electrical bottlenecks, which are designed for the rated load of the respective fuse. At least one further additional geometric bottleneck is provided, which is disconnectable by rupturing depending on the trigger unit when applied by tension.
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公开(公告)号：US11615925B2
公开(公告)日：2023-03-28
申请号：US16723414
申请日：2019-12-20
摘要： Compliant electrical circuit protection devices are described for use in hazardous environments without presenting ignition risks for potentially explosive environmental conditions. Sensing features and systems may evaluate wiring limits and user selected settings for compatibility, detect loose connections and operating parameters to ensure safe operation of the device, and to intelligently diagnose and manage issues of concern for the circuit protection devices as well as the larger electrical power system.
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公开(公告)号：US20220293353A1
公开(公告)日：2022-09-15
申请号：US17680881
申请日：2022-02-25
发明人： Reinhold Henke
摘要： A two terminal arc suppressor for protecting switch, relay or contactor contacts and the like comprises a two terminal module adapted to be attached in parallel with the contacts to be protected and including a circuit for deriving an operating voltage upon the transitioning of the switch, relay or contactor contacts from a closed to an open disposition, the power being rectified and the resulting DC signal used to trigger a power triac switch via an optoisolator circuit whereby arc suppression pulses are generated for short predetermined intervals only at a transition of the mechanical switch, relay or contactor contacts from an closed to an open transition and, again, at an open to a close transition during contact bounce conditions.
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公开(公告)号：US20220122801A1
公开(公告)日：2022-04-21
申请号：US17277918
申请日：2019-09-21
发明人： CHANG PENG , IQBAL HUSAIN , Qin HUANG , LANDON K. MACKEY
摘要： Various examples are provided related to direct current circuit breakers and their control methods. In one example, among others, a hybrid direct current circuit breaker (DCCB) includes an ultrafast mechanical switch (UFMS) connected in series with a commutating switch (CS) or auxiliary circuit breaker (ACB); a main breaker (MB) including a series of η semiconductor switching stages in parallel with the UFMS and CS or ACB; and control circuitry that can turn off individual switching stages in a defined order in response to opening contacts of the UFMS. The switching stages can be turned off based upon a dielectric strength across the contacts as they open. In another example, a method includes opening contacts of an UFMS connected in series with a CS or ACB; and turning off individual switching stages of a series of η semiconductor switching stages connected across the UFMS and the CS or ACB.
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公开(公告)号：US11295906B2
公开(公告)日：2022-04-05
申请号：US16929559
申请日：2020-07-15
发明人： Reinhold Henke
摘要： A two terminal arc suppressor for protecting switch, relay or contactor contacts and the like comprises a two terminal module adapted to be attached in parallel with the contacts to be protected and including a circuit for deriving an operating voltage upon the transitioning of the switch, relay or contactor contacts from a closed to an open disposition, the power being rectified and the resulting DC signal used to trigger a power triac switch via an optoisolator circuit whereby arc suppression pulses are generated for short predetermined intervals only at a transition of the mechanical switch, relay or contactor contacts from an closed to an open transition and, again, at an open to a close transition during contact bounce conditions.
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公开(公告)号：US11239039B2
公开(公告)日：2022-02-01
申请号：US16758146
申请日：2018-09-17
发明人： Wacim Tazarine , David Cacciatore , Sohejl Rafati
摘要： Electrical fuse element 12 comprising a switchable load path 22 and a switchable fuse path 36, wherein the load path 22 and the fuse path 36 are short-circuited with their respective inputs 14. The load path 22 and the fuse path 36 are in mechanical connection with each other in such a way that an electrical opening of the load path 22 causes an electrical closing of the fuse path 36 and that a melting fuse 38 arranged in the fuse path 36 is triggered at the moment of closing of the fuse path 36.
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