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公开(公告)号：US12300412B2
公开(公告)日：2025-05-13
申请号：US17906006
申请日：2021-03-04
Applicant: YOKOGAWA ELECTRIC CORPORATION
Inventor： Shoichi Shiosaki , Shinya Mito , Shoma Takeda
Abstract: A magnetizing apparatus (1) includes an openable and closeable annular portion (3) formed by a magnet (2). The annular portion (3) includes a lock mechanism (4) configured to hold the annular portion (3) in a closed state. A magnetizing method includes an attaching step of placing an object inside the annular portion (3) by opening and closing the annular portion (3) and attaching the magnetizing apparatus (1) to the object by holding the annular portion (3) in a closed state with the lock mechanism (4), a moving step of moving the magnetizing apparatus (1) relative to the object in the axial direction of the annular portion (3) while the magnetizing apparatus (1) is attached to the object, and a detaching step, after the moving step, of releasing the lock mechanism (4) to detach the magnetizing apparatus (1) from the object.
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公开(公告)号：US11835483B2
公开(公告)日：2023-12-05
申请号：US17911050
申请日：2021-03-04
Applicant: YOKOGAWA ELECTRIC CORPORATION
Inventor： Shinya Mito , Kazunori Miyazawa , Fumitake Terao , Shoma Takeda , Shoichi Shiosaki
IPC: G01N27/83
CPC classification number: G01N27/83
Abstract: A magnetic flaw detection method includes a magnetization step (S2) of moving a magnet (21) in a predetermined direction (D) along a surface of an object (7) that is a magnetic body and subsequently removing the magnet (21) from the surface of the object (7) to magnetize a region (R) corresponding to a movement range of the magnet (21) on the object (7), a sensor arrangement step (S3) of arranging a magnetic sensor (35a) to be capable of measuring magnetic flux leakage (8) generated from an abnormal portion (72) of the region (R) that was magnetized in the object (7), and a detection step (S4) of detecting an abnormality in the region (R) with the magnetic sensor (35a) arranged by the sensor arrangement step (S3).
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公开(公告)号：US12300430B2
公开(公告)日：2025-05-13
申请号：US18127134
申请日：2023-03-28
Applicant: Yokogawa Electric Corporation
Inventor： Shoma Takeda , Shoichi Shiosaki , Fumitake Terao , Masahito Tsukano
Abstract: A magnetization device and the like appropriate for various magnetization requirements are more easily provided. Provided is a magnet holding device that is capable of holding a magnet. The magnet holding device includes a ring-shaped portion that is openable/closable and an open/close mechanism allowed to keep the ring-shaped portion in a closed state. The magnet is arrangeable in the ring-shaped portion, and the number of the magnets to be arranged is variable.
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公开(公告)号：US20250035549A1
公开(公告)日：2025-01-30
申请号：US18772689
申请日：2024-07-15
Applicant: Yokogawa Electric Corporation
Inventor： Akihiro Murata , Shoma Takeda
Abstract: A measurement apparatus includes a vaporization chamber in which a sample containing a target component is placed, a measurement chamber that is spatially connected to the vaporization chamber and forms enclosed space integrally with the vaporization chamber, a light source that applies, to the measurement chamber, laser light whose wavelength varies, a detector that detects the laser light having been applied from the light source and having passed through the measurement chamber, and an arithmetic unit that calculates the amount of the target component contained in the sample by analyzing a light-receiving signal of the laser light detected by the detector. The arithmetic unit acquires the amount of the target component, based on an integral value of a spectrum of absorbance of the laser light that is absorbed by the target component while the laser light passes through an interior of the measurement chamber.
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