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公开(公告)号：US11940401B2
公开(公告)日：2024-03-26
申请号：US17418000
申请日：2019-12-24
Applicant: KOA CORPORATION
Inventor： Junichi Otsuka , Yoji Kobayashi
CPC classification number: G01N27/041 , H01C17/22 , H01C17/28 , H01C7/00
Abstract: A sulfurization detection resistor makes it possible to detect a degree of sulfurization accurately and easily, and a manufacturing method for such sulfurization detection resistor. A sulfurization detection resistor includes an insulated substrate having a rectangular parallelepiped shape, a first front electrode and a second front electrode formed at both ends on a main surface of the insulated substrate, multiple sulfurization detecting conductors connected in parallel to the first front electrode, multiple resistive elements connected between the sulfurization detecting conductors and the second front electrode, and a protective film formed to partially cover the sulfurization detecting conductors and entirely cover the resistive elements. The sulfurization detecting conductors have their sulfurization detecting portions exposed out of the protective film, and different timings are set for these sulfurization detecting portions respectively to become disconnected depending on a cumulative amount of sulfurization.
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公开(公告)号：US10969408B2
公开(公告)日：2021-04-06
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：US11920966B2
公开(公告)日：2024-03-05
申请号：US17276357
申请日：2019-09-19
Applicant: KOA CORPORATION
Inventor： Yasuyuki Katase , Yoji Kobayashi
CPC classification number: G01F1/696 , G01F1/6847
Abstract: It is an object to provide a flow rate sensor device having improved sensor responsiveness compared with the prior art. The present invention is a flow rate sensor device including a sensor element that detects a flow rate; a unit body including a sensor unit in which the sensor element is mounted, and a case accommodating the unit body, wherein the sensor unit is supported away from a bottom surface of the case. In this way, the sensor unit is supported to float upward from the bottom surface of the case, and a space is provided between the sensor unit and the bottom surface. Therefore, heat caused in the sensor unit can be separated from outside, and good sensor responsiveness can be maintained.
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