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公开(公告)号：US20210304925A1
公开(公告)日：2021-09-30
申请号：US17263988
申请日：2019-08-02
Applicant: KOA Corporation
Inventor： Shuhei Matsubara , Keishi Nakamura
Abstract: A resistive material for sensing current contains particles having an electrically insulating property and a metal body having a three-dimensional network enclosing the particles, and a ratio of the metal body to the whole of the resistive material is 30 vol % or more and 80 vol % or less.
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公开(公告)号：US20210293854A1
公开(公告)日：2021-09-23
申请号：US16334494
申请日：2017-08-17
Applicant: KOA CORPORATION
Inventor： Tamotsu ENDO
Abstract: Provided is a current measuring device for measuring current, including a conductor (1) adapted to pass current therethrough, and a circuit board (31) with a wire, the wire being adapted to extract a voltage signal from the conductor, in which the circuit board is disposed upright with respect to the conductor.
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公开(公告)号：US11029339B2
公开(公告)日：2021-06-08
申请号：US16635256
申请日：2018-07-10
Applicant: KOA CORPORATION
Inventor： Takanori Kikuchi , Keishi Nakamura , Susumu Toyoda
Abstract: Provided is a current measuring apparatus including a current measuring resistor that includes a resistive element and first and second electrodes fixed to the resistive element, the current measuring resistor being adapted to measure a current, and an electronic circuit component including a plurality of terminals. One of the first electrode or the second electrode is used to short at least two of the terminals of the electronic circuit component.
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公开(公告)号：US20200182914A1
公开(公告)日：2020-06-11
申请号：US16624640
申请日：2018-06-25
Applicant: KOA CORPORATION
Inventor： Tamotsu ENDO
IPC: G01R19/155 , G01R19/00
Abstract: Provided is a current measuring device for measuring current, including a conductor adapted to pass current therethrough, a circuit board with a wire, the wire being adapted to extract a voltage signal from the conductor, a cover member adapted to house the circuit board, first fixing means provided on the cover member, and second fixing means fixed in combination with the first fixing means, in which the conductor is mounted between the first fixing means and the second fixing means.
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公开(公告)号：US10446303B2
公开(公告)日：2019-10-15
申请号：US16323151
申请日：2017-06-23
Applicant: KOA CORPORATION
Inventor： Yasuo Mizouchi , Ringo Kumagai , Kazunari Nebashi
Abstract: A single or multiple cutters are pressed against end surfaces of a resistive element so as to form a plurality of notches in rims of the end surfaces. At this time, notches are formed such that notch depth at the end surfaces of the resistive element toward the axis center is smaller than notch length from the end surfaces of the resistive element to the axis. This allows easy cutting and removal of the resistance wire at the resistive element ends of a coil resistor, etc., and prevention of fraying of a wound wire at the resistive element ends.
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Patent Agency Ranking
公开(公告)号：US20190162757A1
公开(公告)日：2019-05-30
申请号：US16313366
申请日：2017-05-25
Applicant: KOA CORPORATION
Inventor： Soya MIYAJIMA , Ryo OSAWA , Yoji KOBAYASHI
Abstract: Provided is a current measuring device for measuring current, including a conductor adapted to pass current therethrough, at least a pair of voltage sensing terminals arranged apart from each other on the conductor in the current flowing direction, and a substrate to which the voltage sensing terminals are connected. The substrate is long in the current flowing direction, and connection portion of the substrate that are connected to the voltage sensing terminals are arranged closer to one end side of the substrate in the lengthwise direction.
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公开(公告)号：US10256014B2
公开(公告)日：2019-04-09
申请号：US15529235
申请日：2015-11-16
Applicant: KOA CORPORATION
Inventor： Tomohito Imai , Shun Kato , Yoshihisa Nakaji , Yoichi Sakai
Abstract: To provide a wire-wound resistor provided with high reliability and that retains the basic functionality of the wire-wound resistor, and a method for manufacturing the same. A wire-wound resistor in which a resistor wire is wound onto an external periphery of a core (11) obtained by bundling fibrous insulators, and a connection terminal (13) is attached to both ends of the core (11) and connected to the resistor wire (12a), wherein the core (11) is impregnated with a binder in the portion (11a) in the vicinity of the external periphery. The binder (1) is preferably not included in a center portion (11b) of the core (11).
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公开(公告)号：US10096409B2
公开(公告)日：2018-10-09
申请号：US15565704
申请日：2016-04-07
Applicant: KOA Corporation
Inventor： Kentaro Matsumoto
Abstract: Provided is a chip resistor having wide and flat end-face electrodes on a surface thereof and having increased connection reliability between upper electrodes and the end-face electrodes. The chip resistor according to the present invention is provided with: a cuboidal insulating substrate 1; a pair of upper electrodes 2 disposed at both ends in a longitudinal direction on a surface of the insulating substrate 1; a resistor body 3 disposed between the upper electrodes 2; an insulating protective layer 4 covering the entire surfaces of the upper electrodes 2 and the resistor body 3; and a pair of end-face electrodes 5 disposed on both end faces in the longitudinal direction of the insulating substrate 1, wherein the upper electrodes 2 include bent portions 2a extending around from between the insulating substrate 1 and the protective layer 4 along the end faces of the protective layer 4, and the end-face electrodes 5 are connected to the exposed portions of the upper electrodes 2, including the bent portions 2a, exposed from between the insulating substrate 1 and the protective layer 4.
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公开(公告)号：US10083780B2
公开(公告)日：2018-09-25
申请号：US15593795
申请日：2017-05-12
Applicant: KOA CORPORATION
Inventor： Takashi Naito
IPC: H01C1/02 , H01C1/14 , H01C1/014 , H01C3/14 , H01C7/00 , H01C1/028 , H01C1/16 , H05K1/11 , H05K1/18
CPC classification number: H01C1/02 , H01C1/014 , H01C1/028 , H01C1/14 , H01C1/16 , H01C3/14 , H01C7/003 , H05K1/111 , H05K1/181 , H05K2201/10022
Abstract: Provided is a surface mount resistor that can be stably mounted without the need for lead wires to be to flattened. The surface mount resistor includes a first resistive element and a second resistive element arranged in parallel, the first resistive element having first lead wires at opposite ends thereof, and the second resistive element having second lead wires at opposite ends thereof. The first resistive element and the second resistive element are integrated by being covered with a sheath. The first lead wires and the second lead wires are arranged such that they protrude outward in a direction of an axis beyond the sheath. The first lead wires and the second lead wires are bent alongside surfaces and a bottom surface of the sheath.
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公开(公告)号：US20180160538A1
公开(公告)日：2018-06-07
申请号：US15593795
申请日：2017-05-12
Applicant: KOA CORPORATION
Inventor： Takashi NAITO
CPC classification number: H01C1/02 , H01C1/014 , H01C1/028 , H01C1/14 , H01C1/16 , H01C3/14 , H01C7/003 , H05K1/111 , H05K1/181 , H05K2201/10022
Abstract: Provided is a surface mount resistor that can be stably mounted without the need for lead wires to be to flattened. The surface mount resistor includes a first resistive element and a second resistive element arranged in parallel, the first resistive element having first lead wires at opposite ends thereof, and the second resistive element having second lead wires at opposite ends thereof. The first resistive element and the second resistive element are integrated by being covered with a sheath. The first lead wires and the second lead wires are arranged such that they protrude outward in a direction of an axis beyond the sheath. The first lead wires and the second lead wires are bent alongside surfaces and a bottom surface of the sheath.
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