Patents by Inventor Hidenori Shimizu
Hidenori Shimizu 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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Patent number: 11977362Abstract: In the conventional distributed control system, since each control device updates the data area at a timing when a control packet is received, in a case where there is a difference in communication delay between the control devices or in a case where the communication delay includes jitter, it is difficult to match the contents of data in all the control devices in a case of focusing on a certain moment during system operation. Therefore, depending on the start timing of a control application, the control application operates on the basis of different data between the control devices, thus limiting control performance improvement. Accordingly, time slots on the network are allocated according to the result of a calculation unit, and a cyclic memory synchronization update unit synchronizes the timing of reflecting data in the input/output and the cyclic memory and the timing of using data of a cyclic memory.Type: GrantFiled: August 19, 2020Date of Patent: May 7, 2024Assignee: HITACHI, LTD.Inventors: Tatsuya Maruyama, Yusaku Otsuka, Hidenori Omiya, Toshiki Shimizu, Iori Kobayashi, Kazutaka Onishi, Noritaka Matsumoto
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Publication number: 20230158644Abstract: An impact tool includes a motor, an output block, a hammer, and a magnetostrictive sensor. The magnetostrictive sensor includes a magnetostrictive member and a coil portion covering the magnetostrictive member. The output block includes a claw block and a body block. The claw block includes an anvil claw, against which a hammer claw collides. The claw block has been subjected to quenching treatment. The body block includes a thermally sprayed portion and is coupled to the claw block. The thermally sprayed portion includes, on a surface thereof, the magnetostrictive member made of a magnetostrictive material.Type: ApplicationFiled: November 10, 2022Publication date: May 25, 2023Inventors: Hiroaki MURAKAMI, Hidenori SHIMIZU, Fumiaki SAWANO
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Patent number: 11499674Abstract: An electric power tool includes a holder, a motor, and a transmission mechanism. The motor includes a stator and a rotor. The rotor includes a rotary shaft and a rotor body. The rotary shaft is coupled to the transmission mechanism. The rotator includes at least the rotor body. The rotator rotates. The electric power tool further includes an absorbing member. The absorbing member has a property to absorb a lubricant. The absorbing member is arranged between the rotator and the transmission mechanism.Type: GrantFiled: March 26, 2021Date of Patent: November 15, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinji Seko, Hidenori Shimizu
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Patent number: 11285586Abstract: An electric power tool includes a bearing retainer that retains a bearing for supporting a motor shaft, a transmission mechanism that transmits a rotational output of a motor to a front-end tool and a rotating body attached to an end of the motor shaft. The bearing retainer includes an extension that extends in a direction of axial line from an end face position on the bearing. At least a part of the rotating body is provided in front of a rear end of the extension.Type: GrantFiled: August 28, 2018Date of Patent: March 29, 2022Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Masari Muramatsu, Takashi Kusagawa, Fumiaki Sawano, Hidenori Shimizu
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Publication number: 20210301977Abstract: An electric power tool includes a holder, a motor, and a transmission mechanism. The motor includes a stator and a rotor. The rotor includes a rotary shaft and a rotor body. The rotary shaft is coupled to the transmission mechanism. The rotator includes at least the rotor body. The rotator rotates. The electric power tool further includes an absorbing member. The absorbing member has a property to absorb a lubricant. The absorbing member is arranged between the rotator and the transmission mechanism.Type: ApplicationFiled: March 26, 2021Publication date: September 30, 2021Inventors: Shinji Seko, Hidenori Shimizu
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Patent number: 11119225Abstract: A measuring device capable of referring to map information, comprising: a first position measuring circuit for measuring a position of the device by receiving a signal transmitted from a positioning satellite; a power source circuit for supplying a power source to the first position measuring circuit; and a processor configured to suspend, in a case of determining that measurement using the first position measuring circuit is not possible, supply of a power source to the first position measuring circuit when determining that a position of the device is indoors based on a latest measurement result by the first position measuring circuit before it is determined that the measurement using the first position measuring circuit is not possible, and the map information.Type: GrantFiled: February 20, 2019Date of Patent: September 14, 2021Assignee: Olympus CorporationInventors: Hidenori Shimizu, Yuji Nakamura, Shinsuke Tsuboi, Tatsunori Sasaki, Hiroaki Fujikane
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Patent number: 10530224Abstract: A motor includes: a stator; a rotor axially aligned with the stator; a circuit board; and a heat dissipating plate. The stator includes: an iron core including teeth; an insulator covering one end surface, in the axial direction, of the iron core; and a coil wound around the teeth. The insulator includes an electrically insulating material having a lower rate of heat transfer than a material included in the iron core. The heat dissipating plate is attached to the insulator in a state in which the heat dissipating plate is in contact with the insulator without being in contact with the iron core, and the circuit board is attached to the heat dissipating plate in a state in which the circuit board is in contact with the heat dissipating plate without being in contact with the iron core.Type: GrantFiled: December 9, 2015Date of Patent: January 7, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kota Kitamura, Hidenori Shimizu, Atsushi Takeyama, Motoharu Muto, Daiju Kinoshita
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Publication number: 20190265368Abstract: A measuring device capable of referring to map information, comprising: a first position measuring circuit for measuring a position of the device by receiving a signal transmitted from a positioning satellite; a power source circuit for supplying a power source to the first position measuring circuit; and a processor configured to suspend, in a case of determining that measurement using the first position measuring circuit is not possible, supply of a power source to the first position measuring circuit when determining that a position of the device is indoors based on a latest measurement result by the first position measuring circuit before it is determined that the measurement using the first position measuring circuit is not possible, and the map information.Type: ApplicationFiled: February 20, 2019Publication date: August 29, 2019Inventors: Hidenori SHIMIZU, Yuji NAKAMURA, Shinsuke TSUBOI, Tatsunori SASAKI, Hiroaki FUJIKANE
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Patent number: 10355538Abstract: A brushless motor includes: a stator core having a cylindrical yoke portion and a teeth portion having a shape protruding from an inner circumferential surface of the yoke portion; and a rotor that is disposed inside the stator core, spaced apart from the teeth portion, and uses a center axis of the yoke portion as an axis of rotation. The yoke portion includes, on its outer circumferential surface, a notch portion at a position on the back side of the teeth portion. The notch portion has a circumferential width smaller than a circumferential width of the teeth portion.Type: GrantFiled: October 9, 2015Date of Patent: July 16, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kota Kitamura, Hidenori Shimizu, Atsushi Takeyama, Motoharu Muto, Hiroyuki Tsubakimoto, Koichi Hashimoto
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Patent number: 10279459Abstract: A holding pin protrudes from a first opening of a through hole, enters a hole formed in a tip tool, and holds the tip tool. A spring member energizes the holding pin. A bush is press-fitted in the through hole and supports the spring member at a first end portion thereof. An inner diameter of a second opening of the through hole is formed larger than an outer diameter of the bush. As a result of this, a second end portion of the bush is arranged to avoid contact with the second opening of the through hole.Type: GrantFiled: March 9, 2017Date of Patent: May 7, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroyuki Tsubakimoto, Hidenori Shimizu, Kenji Nakayama
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Patent number: 10232501Abstract: A power tool that is capable of more reliably keeping a torque at a constant is provided. An adjustment member is provided with: an engagement hole that is detachably attached to the adjustment member, and serves as an engagement part that engages with a torque adjustment device that serves as a clutch handle for rotating the adjustment member; and a lid that is attached to an opening in such a manner as to cover the engagement hole.Type: GrantFiled: February 19, 2013Date of Patent: March 19, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Fumiaki Sawano, Hidenori Shimizu
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Publication number: 20190061117Abstract: An electric power tool includes a bearing retainer that retains a bearing for supporting a motor shaft, a transmission mechanism that transmits a rotational output of a motor to a front-end tool and a rotating body attached to an end of the motor shaft. The bearing retainer includes an extension that extends in a direction of axial line from an end face position on the bearing. At least a part of the rotating body is provided in front of a rear end of the extension.Type: ApplicationFiled: August 28, 2018Publication date: February 28, 2019Inventors: Masari MURAMATSU, Takashi KUSAGAWA, Fumiaki SAWANO, Hidenori SHIMIZU
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Publication number: 20170358961Abstract: A brushless motor includes: a stator core having a cylindrical yoke portion and a teeth portion having a shape protruding from an inner circumferential surface of the yoke portion; and a rotor that is disposed inside the stator core, spaced apart from the teeth portion, and uses a center axis of the yoke portion as an axis of rotation. The yoke portion includes, on its outer circumferential surface, a notch portion at a position on the back side of the teeth portion. The notch portion has a circumferential width smaller than a circumferential width of the teeth portion.Type: ApplicationFiled: October 9, 2015Publication date: December 14, 2017Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT D.Inventors: Kota KITAMURA, Hidenori SHIMIZU, Atsushi TAKEYAMA, Motoharu MUTO, Hiroyuki TSUBAKIMOTO, Koichi HASHIMOTO
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Publication number: 20170353085Abstract: A motor includes: a stator; a rotor axially aligned with the stator; a circuit board; and a heat dissipating plate. The stator includes: an iron core including teeth; an insulator covering one end surface, in the axial direction, of the iron core; and a coil wound around the teeth. The insulator includes an electrically insulating material having a lower rate of heat transfer than a material included in the iron core. The heat dissipating plate is attached to the insulator in a state in which the heat dissipating plate is in contact with the insulator without being in contact with the iron core, and the circuit board is attached to the heat dissipating plate in a state in which the circuit board is in contact with the heat dissipating plate without being in contact with the iron core.Type: ApplicationFiled: December 9, 2015Publication date: December 7, 2017Inventors: Kota KITAMURA, Hidenori SHIMIZU, Atsushi TAKEYAMA, Motoharu MUTO, Daiju KINOSHITA
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Publication number: 20170259413Abstract: A holding pin protrudes from a first opening of a through hole, enters a hole formed in a tip tool, and holds the tip tool. A spring member energizes the holding pin. A bush is press-fitted in the through hole and supports the spring member at a first end portion thereof. An inner diameter of a second opening of the through hole is formed larger than an outer diameter of the bush. As a result of this, a second end portion of the bush is arranged to avoid contact with the second opening of the through hole.Type: ApplicationFiled: March 9, 2017Publication date: September 14, 2017Inventors: Hiroyuki TSUBAKIMOTO, Hidenori Shimizu, Kenji Nakayama
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Patent number: 9692504Abstract: An optical transport system includes: uplink transponders opposed to construct an uplink transport path, to transport an OTU frame, redundant uplink transponders opposed to construct a redundant system uplink transport path, to transport the OTU frame, downlink transponders opposed to construct a downlink transport path, to store maintenance information in the OTU overhead of the OTU frame and transport this OTU frame when a failure occurs in the uplink transport path; optical switches to connect between client transport devices, and the uplink transport path and the redundant system uplink transport path such that switching between these uplink transport paths can be performed, to switch from the uplink transport path to the redundant system uplink transport path on the basis of the maintenance information.Type: GrantFiled: May 17, 2013Date of Patent: June 27, 2017Assignee: Mitsubishi Electric CorporationInventors: Hidenori Shimizu, Yoshiaki Konishi
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Patent number: 9452520Abstract: An electric power tool includes a motor having a drive shaft, a tool output shaft rotated by rotational force of the drive shaft, a clutch unit that connects or disconnects a torque transmission line between the drive shaft and the tool output shaft according to load torque of the tool output shaft, a load detector that outputs a load torque signal in accordance with the load torque of the tool output shaft, and a control unit that performs a rising detection mode, which detects rising of the load torque signal to stop rotation of the motor, and a falling detection mode, which detects falling of the load torque signal to stop rotation of the motor. The control unit selects the rising detection mode or the falling detection mode according to a usage condition signal indicating a usage condition of the electric power tool.Type: GrantFiled: March 5, 2014Date of Patent: September 27, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Fumiaki Sawano, Hiroshi Miyazaki, Hidenori Shimizu
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Publication number: 20160056887Abstract: An optical transport system includes: uplink transponders opposed to construct an uplink transport path, to transport an OTU frame, redundant uplink transponders opposed to construct a redundant system uplink transport path, to transport the OTU frame, downlink transponders opposed to construct a downlink transport path, to store maintenance information in the OTU overhead of the OTU frame and transport this OTU frame when a failure occurs in the uplink transport path; optical switches to connect between client transport devices, and the uplink transport path and the redundant system uplink transport path such that switching between these uplink transport paths can be performed, to switch from the uplink transport path to the redundant system uplink transport path on the basis of the maintenance information.Type: ApplicationFiled: May 17, 2013Publication date: February 25, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hidenori SHIMIZU, Yoshiaki KONISHI
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Patent number: 9041322Abstract: An electric power tool is included in a plurality of types of electric power tools. The plurality of types of electric power tools comprise a plurality of types of battery packs having different rated output voltages and a plurality of types of tool bodies, the housings of which are equipped with an attached part on which each of the battery packs is mounted in a freely removable manner. The attached part possessed by the plurality of types of tool bodies equipped with motors having different voltage characteristics is formed so as to be able to mount an arbitrary one of the plurality of types of battery packs having different rated output voltages. This makes it possible to widen the range of available battery packs and enhance convenience.Type: GrantFiled: March 18, 2011Date of Patent: May 26, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hidenori Shimizu, Masaaki Sakaue, Naotake Tanaka, Masaki Ikeda, Masaaki Okada
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Publication number: 20150047867Abstract: A power tool that is capable of more reliably keeping a torque at a constant is provided. An adjustment member is provided with: an engagement hole that is detachably attached to the adjustment member, and serves as an engagement part that engages with a torque adjustment device that serves as a clutch handle for rotating the adjustment member; and a lid that is attached to an opening in such a manner as to cover the engagement hole.Type: ApplicationFiled: February 19, 2013Publication date: February 19, 2015Inventors: Fumiaki Sawano, Hidenori Shimizu