Patents by Inventor Wataru Niwa
Wataru Niwa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240258864Abstract: A motor device includes a first rotor, a coil, and an electric power lead-out wire. The electric power lead-out wire is led out from the coil, extends in an axial direction through an outer peripheral side of the first rotor, and is electrically connected to an electric power busbar. The first rotor includes a holder main body and a holder rib. The holder main body extends in a plate shape in a direction orthogonal to the axial direction. The holder rib protrudes from the holder main body toward the electric power busbar in the axial direction. The holder rib extends along the holder main body in a radial direction, and rotates together with the holder main body to send a gas toward the electric power lead-out wire.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventor: WATARU NIWA
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Publication number: 20240258894Abstract: A motor device includes a motor housing, a stator, an electric power lead-out wire, and a first rotor. The motor housing accommodates the stator and the first rotor. The stator includes a coil portion. The electric power lead-out wire is led out from the coil portion. The electric power lead-out wire includes a rising avoidance portion. The rising avoidance portion extends in an axial direction passing between the first rotor and a motor inner peripheral surface. The rising avoidance portion is flat such that a thickness dimension in a radial direction is smaller than a width dimension in a circumferential direction. In the rising avoidance portion, an avoidance outer surface faces the motor inner peripheral surface.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, YU KUWAHARA
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Publication number: 20240258860Abstract: A motor device includes a stator and a rotor. The stator and rotor are aligned in an axial direction. The stator includes a coil. The motor device includes a busbar unit. The busbar unit includes an electric power busbar and a busbar protection portion. The electric power busbar is electrically connected to the coil. The busbar protection portion protects the electric power busbar. The motor device includes a neutral point busbar. The neutral point busbar is electrically connected to a neutral point of the coil. The neutral point busbar is provided at a position separated from the busbar protection portion.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventor: WATARU NIWA
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Publication number: 20240258852Abstract: A rotor includes a magnet unit, a magnet holder, a fixing block, and a magnet fixing tool. The magnet holder includes a holder main body, an outer peripheral engagement portion, and a holder receiving portion. The magnet unit has an inner peripheral tapered surface and an outer peripheral tapered surface. In the magnet unit, the outer peripheral tapered surface is in a state of being caught by the outer peripheral engagement portion. The inner peripheral tapered surface is inclined with respect to the motor axis to face an axial gap. The inner peripheral tapered surface is caught by the fixing block. In the fixing block, the block tapered surface is in a state of being overlapped with the inner peripheral tapered surface.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, TAKASHI MAKINO
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Publication number: 20240258885Abstract: A motor device includes a motor housing, a stator coil, and a temperature sensor. The motor housing accommodates the stator coil and the temperature sensor. In the motor housing, motor fins are provided on a motor outer peripheral surface. The motor fins are provided on a radially outer side of the stator coil. The temperature sensor is provided on a radially inner side of the stator coil. In the motor device, heat radiation of the stator coil toward the radially outer side is accelerated by the motor fins such that heat radiated from the stator coil toward the radially outer side is more than heat radiated from the stator coil toward the radially inner side.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, TSUYOSHI GODA
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Publication number: 20240258856Abstract: A motor device includes a motor housing, a coil portion, and a coil protection portion. The motor housing includes a housing main body and a displacement restriction portion. The displacement restriction portion extends from the housing main body toward a radially inner side to enter between two coil bodies adjacent to each other in a circumferential direction. The coil protection portion includes a protection outer peripheral portion. The protection outer peripheral portion is provided between the coil body and the displacement restriction portion. The protection outer peripheral portion extends along a displacement restriction surface in the circumferential direction and an axial direction. The displacement restriction portion is in a state of being caught by the coil body via the protection outer peripheral portion, thereby forming displacement of the coil body.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, JASPER PENG
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Publication number: 20240258861Abstract: A motor device includes a motor and a motor case. A wall electric power busbar, a stator, and a rotor are accommodated in the motor case. The motor case includes a motor outer peripheral wall, a first facing wall, and a second facing wall. The wall electric power busbar is fixed to the motor outer peripheral wall. The wall electric power busbar is in a state of being overlapped with a motor inner wall surface. The wall electric power busbar extends along the motor inner wall surface in a circumferential direction. The wall electric power busbar is provided at a position away from the stator, the rotor, and the first facing wall in an axial direction.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventor: WATARU NIWA
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Publication number: 20240258855Abstract: A motor device includes a motor housing, a stator, and a rotor. An axial gap is formed between the stator and the rotor. An internal space of the motor housing includes a stator region, an opposite region, and an outer peripheral region. In the axial gap, a gap outer peripheral end communicates with the opposite region through the outer peripheral region. A holder adjustment hole, a holder center hole, and the like are formed in the rotor. In the axial gap, a gap inner peripheral end communicates with the opposite region through the holder adjustment hole, the holder center hole, and the like.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, JASPER PENG
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Publication number: 20240258884Abstract: A motor device includes a stator, a rotor, a shaft, an electric power busbar, and a resolver. The shaft includes a shaft main body that rotates together with the rotor. The electric power busbar is provided at a position away from the shaft main body toward a radially outer side. The electric power busbar extends in an annular shape in a circumferential direction. The resolver is provided on the shaft main body and detects a rotation angle of the shaft main body. The resolver is provided at a position away from the electric power busbar toward a radially inner side. The resolver is in a state of entering between the electric power busbar and the shaft main body.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, RYOHEI OBA, YUKI TAKAHASHI
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Publication number: 20240258865Abstract: A motor device includes a motor housing, an electric power lead-out wire, a grommet, and a first rotor. The electric power lead-out wire is led out from a coil and is electrically connected to an electric power busbar. The electric power lead-out wire includes an outer peripheral lead-out portion and an intersection lead-out portion. The outer peripheral lead-out portion is provided on an outer peripheral side of the first rotor and extends along an inner peripheral surface in an axial direction. The intersection lead-out portion extends in a direction intersecting the outer peripheral lead-out portion. The grommet includes an outer grommet portion and an inner grommet portion. The outer grommet portion enters between the outer peripheral lead-out portion and the inner peripheral surface in a radial direction, and extends further toward the electric power busbar than the outer peripheral lead-out portion in the axial direction.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventor: WATARU NIWA
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Publication number: 20240258854Abstract: Multiple magnet units are provided in a rotor. Each of the magnet units includes multiple magnets. In the magnet unit, the multiple magnets are arranged in a circumferential direction. An outer surface of the magnet includes a first magnet surface. The magnet includes multiple magnet pieces stacked in a light direction. An outer surface of the magnet piece includes a first piece surface. The first magnet surface extends in a planar shape to span the multiple magnet pieces. The first magnet surface has multiple first piece surfaces. In the first magnet surface, the multiple first piece surfaces are flush with one another.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventors: WATARU NIWA, KENTA GOTO, YUKI TAKAHASHI
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Publication number: 20240258867Abstract: A motor device includes a motor housing, a rear frame, and a motor seal portion. The motor seal portion is sandwiched between the motor housing and the rear frame, and closes a gap between the motor housing and the rear frame. The motor seal portion is held in a state of being sandwiched between a motor seal holding portion and a rear frame holding portion. The motor seal holding portion is included in the motor housing. The rear frame holding portion is provided in the rear frame. A motor outer peripheral surface and a rear frame outer peripheral surface are arranged continuously in an axial direction. The motor outer peripheral surface is provided on a radially outer side of the motor seal holding portion.Type: ApplicationFiled: March 25, 2024Publication date: August 1, 2024Inventor: WATARU NIWA
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Patent number: 6817997Abstract: A laser treatment apparatus for performing treatment on a treatment part of a skin by irradiating the part with a laser beam for treatment is disclosed. The apparatus includes: a window having an optical property of transmitting the treatment beam, the window being brought into contact with the skin for laser irradiation; a window cooling unit; a contact-state detector which detects a contact state of the window with the skin; and a controller which changes a cooling control temperature of the cooling unit from a predetermined first temperature which is previously set higher than 0° C. to a predetermined second temperature lower than the first temperature when the contact-state detector detects that the window is in contact with the skin.Type: GrantFiled: February 25, 2002Date of Patent: November 16, 2004Assignee: Nidek Co., Ltd.Inventors: Takahiro Furuno, Wataru Niwa
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Patent number: 6733492Abstract: A laser treatment apparatus which is used to treat an affected part of a patient by irradiating a treatment laser beam to the affected part is disclosed. The apparatus includes a laser irradiation unit provided with a laser irradiation optical system for delivering the laser beam to the affected part; a contact member including a contact face which is brought into contact with at least one of the affected part and a periphery thereof; a cooler which cools down at least the contact face of the contact member; a sensor which detects at least one of a temperature of a periphery of the contact face made contact with the affected part, a temperature of a predetermined portion of at least one of the contact member and the cooler, a contact state of the contact face with respect to the affected part, and a relative substantially horizontal movement of the contact member with respect to the affected part; and an irradiation controller which controls laser irradiation based on a result of detection by the sensor.Type: GrantFiled: February 1, 2001Date of Patent: May 11, 2004Assignee: Nidek Co., Ltd.Inventors: Yasuo Ota, Hideo Mukai, Yohei Kamihagi, Wataru Niwa
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Patent number: 6679877Abstract: There is disclosed a laser treatment apparatus including: a handpiece internally including an irradiation optical system for irradiating a laser beam for treatment; a lens disposing unit which can dispose a lens in the irradiation optical system, the lens being selectable from among a plurality of lenses of different types having different focal lengths; and a lens detecting unit which detects the type of the lens disposed in the irradiation optical system.Type: GrantFiled: November 23, 2001Date of Patent: January 20, 2004Assignee: Nidek Co., Ltd.Inventors: Yasuo Ota, Wataru Niwa
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Patent number: 6621838Abstract: A laser treatment apparatus for performing treatments on an affected part by irradiating the affected part with a laser beam for treatment is disclosed. This apparatus includes a laser oscillator, a cooling unit including a fan which cools the laser oscillator, a temperature sensor which directly or indirectly detects a temperature of the laser oscillator, and a control unit which drives the fan at roughly constant low speed when a detected temperature by the temperature sensor is below a predetermined reference value and at roughly constant high speed when the detected temperature is the predetermined reference value or more.Type: GrantFiled: July 25, 2001Date of Patent: September 16, 2003Assignee: Nidek Co., Ltd.Inventors: Yasuyuki Naito, Wataru Niwa
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Publication number: 20020120315Abstract: A laser treatment apparatus for performing treatment on a treatment part of a skin by irradiating the part with a laser beam for treatment is disclosed. The apparatus includes: a window having an optical property of transmitting the treatment beam, the window being brought into contact with the skin for laser irradiation; a window cooling unit; a contact-state detector which detects a contact state of the window with the skin; and a controller which changes a cooling control temperature of the cooling unit from a predetermined first temperature which is previously set higher than 0° C. to a predetermined second temperature lower than the first temperature when the contact-state detector detects that the window is in contact with the skin.Type: ApplicationFiled: February 25, 2002Publication date: August 29, 2002Applicant: Nidek Co., Ltd.Inventors: Takahiro Furuno, Wataru Niwa
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Publication number: 20020068926Abstract: There is disclosed a laser treatment apparatus including: a handpiece internally including an irradiation optical system for irradiating a laser beam for treatment; a lens disposing unit which can dispose a lens in the irradiation optical system, the lens being selectable from among a plurality of lenses of different types having different focal lengths; and a lens detecting unit which detects the type of the lens disposed in the irradiation optical system.Type: ApplicationFiled: November 23, 2001Publication date: June 6, 2002Applicant: NIDEK CO., LTDInventors: Yasuo Ota, Wataru Niwa
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Publication number: 20020018497Abstract: A laser treatment apparatus for performing treatments on an affected part by irradiating the affected part with a laser beam for treatment is disclosed. This apparatus includes a laser oscillator, a cooling unit including a fan which cools the laser oscillator, a temperature sensor which directly or indirectly detects a temperature of the laser oscillator, and a control unit which drives the fan at roughly constant low speed when a detected temperature by the temperature sensor is below a predetermined reference value and at roughly constant high speed when the detected temperature is the predetermined reference value or more.Type: ApplicationFiled: July 25, 2001Publication date: February 14, 2002Applicant: NIDEK CO., LTD.Inventors: Yasuyuki Naito, Wataru Niwa
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Publication number: 20010007068Abstract: A laser treatment apparatus which is used to treat an affected part of a patient by irradiating a treatment laser beam to the affected part is disclosed. The apparatus includes a laser irradiation unit provided with a laser irradiation optical system for delivering the laser beam to the affected part; a contact member including a contact face which is brought into contact with at least one of the affected part and a periphery thereof; a cooler which cools down at least the contact face of the contact member; a sensor which detects at least one of a temperature of a periphery of the contact face made contact with the affected part, a temperature of a predetermined portion of at least one of the contact member and the cooler, a contact state of the contact face with respect to the affected part, and a relative substantially horizontal movement of the contact member with respect to the affected part; and an irradiation controller which controls laser irradiation based on a result of detection by the sensor.Type: ApplicationFiled: February 1, 2001Publication date: July 5, 2001Inventors: Yasuo Ota, Hideo Mukai, Yohei Kamihagi, Wataru Niwa