Patents by Inventor Kazuyoshi Harada
Kazuyoshi Harada 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: 11719126Abstract: Each of foils (22) includes: a top foil portion (22a) including a bearing surface (S); and a back foil portion (22b), which is formed on an upstream side of the top foil portion (22a), and is arranged so as to overlap behind the top foil portion (22a) of the adjacent foil (22) (on a side opposite to the bearing surface (S)). An angle (E) covering a radially inner end of an overlapping portion (P) between the adjacent foils (22) is smaller than an angle (D) covering a radially outer end of the overlapping portion (P).Type: GrantFiled: February 26, 2020Date of Patent: August 8, 2023Assignee: NTN CORPORATIONInventors: Kazuyoshi Harada, Masato Yoshino, Miki Okamoto
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Patent number: 11708854Abstract: A thrust foil bearing 40 having a thrust bearing surface S formed by arranging a plurality of leaves 42 side by side in a circumferential direction, in which each of the leaves 42 has a top foil portion Tf that forms the thrust bearing surface S, and a ratio of a circumferential length A of the top foil portion Tf of one of the leaves 42 at a radially central position of the top foil portion Tf, to a radial length B from an inner diameter-side edge 423 to an outer diameter-side edge 424 of the top foil portion Tf is 0.66 or less.Type: GrantFiled: February 20, 2020Date of Patent: July 25, 2023Assignee: NTN CORPORATIONInventors: Masato Yoshino, Kazuyoshi Harada
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Patent number: 11519459Abstract: A fluid dynamic bearing device 1 includes: a shaft member 2; a bearing sleeve 8 that has the shaft member 2 inserted into the inner periphery thereof; a housing 7 that holds the bearing sleeve 8 on the inner periphery thereof and has a bottomed cylindrical shape having an opening at an end portion on one axial side; and a seal member 9 provided at the opening of the housing 7. The seal member 9 has a disk portion 9a disposed on one axial side of the bearing sleeve 8, and a protrusion (cylindrical portion 9b) protruding to the other axial side from an outer diameter end of the disk portion 9a. An outer peripheral surface 9c of the seal member 9 is fixed to an inner peripheral surface 7a1 of the housing 7.Type: GrantFiled: December 7, 2018Date of Patent: December 6, 2022Assignee: NTN CORPORATIONInventors: Kazuyoshi Harada, Shinji Komatsubara, Shouhei Oka, Jun Hirade
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Patent number: 11428266Abstract: Provided is a slide bearing (bearing sleeve (8)), comprising an oxidized green compact in which particles (11) of metal powder are bonded to each other by an oxide film (12) formed on surfaces of the particles (11). The oxidized green compact has a bearing surface (A, B) configured to slide, through intermediation of a lubricating film, relative to a mating member (shaft member (2)) to be supported. The bearing surface (A, B) has a large number of opening portions (13a), and the large number of opening portions (13a) and inner pores (13b) are interrupted in communication therebetween by the oxide film (12).Type: GrantFiled: September 4, 2017Date of Patent: August 30, 2022Assignee: NTN CORPORATIONInventors: Takao Arai, Fuyuki Ito, Tetsuya Kurimura, Shinji Komatsubara, Katsuo Shibahara, Kazuyoshi Harada
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Publication number: 20220162965Abstract: Each of foils (22) includes: a top foil portion (22a) including a bearing surface (S); and a back foil portion (22b), which is formed on an upstream side of the top foil portion (22a), and is arranged so as to overlap behind the top foil portion (22a) of the adjacent foil (22) (on a side opposite to the bearing surface (S)). An angle (E) covering a radially inner end of an overlapping portion (P) between the adjacent foils (22) is smaller than an angle (D) covering a radially outer end of the overlapping portion (P).Type: ApplicationFiled: February 26, 2020Publication date: May 26, 2022Inventors: Kazuyoshi HARADA, Masato YOSHINO, Miki OKAMOTO
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Publication number: 20220090627Abstract: A thrust foil bearing 40 having a thrust bearing surface S formed by arranging a plurality of leaves 42 side by side in a circumferential direction, in which each of the leaves 42 has a top foil portion Tf that forms the thrust bearing surface S, and a ratio of a circumferential length A of the top foil portion Tf of one of the leaves 42 at a radially central position of the top foil portion Tf, to a radial length B from an inner diameter-side edge 423 to an outer diameter-side edge 424 of the top foil portion Tf is 0.66 or less.Type: ApplicationFiled: February 20, 2020Publication date: March 24, 2022Inventors: Masato YOSHINO, Kazuyoshi HARADA
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Patent number: 11215976Abstract: A component mounting system includes a component mounting line, a storage device, and a display device. The component mounting line is formed by connecting a plurality of mounting board manufacturing machines. The storage device is connected to the component mounting line via a network to acquire information from each of the plurality of mounting board manufacturing machines. The display device is connected to the storage device via the network and displays a progress status of set-up work executed when changing a type of a mounting board manufactured by the component mounting line based on information stored in the storage device.Type: GrantFiled: November 19, 2019Date of Patent: January 4, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuyoshi Harada, Takuya Yamazaki, Atsushi Nakazono, Hiroshi Ando
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Publication number: 20210285491Abstract: Provided is a slide bearing (bearing sleeve (8)), comprising an oxidized green compact in which particles (11) of metal powder are bonded to each other by an oxide film (12) formed on surfaces of the particles (11). The oxidized green compact has a bearing surface (A, B) configured to slide, through intermediation of a lubricating film, relative to a mating member (shaft member (2)) to be supported. The bearing surface (A, B) has a large number of opening portions (13a), and the large number of opening portions (13a) and inner pores (13b) are interrupted in communication therebetween by the oxide film (12).Type: ApplicationFiled: September 4, 2017Publication date: September 16, 2021Inventors: Takao ARAI, Fuyuki ITO, Tetsuya KURIMURA, Shinji KOMATSUBARA, Katsuo SHIBAHARA, Kazuyoshi HARADA
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Publication number: 20210040990Abstract: A fluid dynamic bearing device 1 includes: a shaft member 2; a bearing sleeve 8 that has the shaft member 2 inserted into the inner periphery thereof; a housing 7 that holds the bearing sleeve 8 on the inner periphery thereof and has a bottomed cylindrical shape having an opening at an end portion on one axial side; and a seal member 9 provided at the opening of the housing 7. The seal member 9 has a disk portion 9a disposed on one axial side of the bearing sleeve 8, and a protrusion (cylindrical portion 9b) protruding to the other axial side from an outer diameter end of the disk portion 9a. An outer peripheral surface 9c of the seal member 9 is fixed to an inner peripheral surface 7a1 of the housing 7.Type: ApplicationFiled: December 7, 2018Publication date: February 11, 2021Inventors: Kazuyoshi HARADA, Shinji KOMATSUBARA, Shouhei OKA, Jun HIRADE
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Patent number: 10893641Abstract: A group determination method includes a step of calculating an external set-up work time for an external set-up work by which a component supplier used in a group that is a next production target of a group under production in a component mounting line, including a plurality of the component mounters capable of attaching and detaching a component supply carriage which can arrange a plurality of the component suppliers (tape feeders), is removed from the component mounting line and arranged in the component supply carriage; and a step of calculating a production completion time at which the production of all the mounting boards that are the production targets is completed in consideration of the external set-up work time. A plurality of groups which are common in an arrangement of component suppliers for the mounting boards that are the production targets are determined so that production completion time is shortened.Type: GrantFiled: January 10, 2018Date of Patent: January 12, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takuya Yamazaki, Atsushi Nakazono, Hiroshi Ando, Kazuyoshi Harada
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Publication number: 20200089201Abstract: A component mounting system includes a component mounting line, a storage device, and a display device. The component mounting line is formed by connecting a plurality of mounting board manufacturing machines. The storage device is connected to the component mounting line via a network to acquire information from each of the plurality of mounting board manufacturing machines. The display device is connected to the storage device via the network and displays a progress status of set-up work executed when changing a type of a mounting board manufactured by the component mounting line based on information stored in the storage device.Type: ApplicationFiled: November 19, 2019Publication date: March 19, 2020Inventors: KAZUYOSHI HARADA, TAKUYA YAMAZAKI, ATSUSHI NAKAZONO, HIROSHI ANDO
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Patent number: 10520930Abstract: A component mounting system includes a component mounting line, a storage device, and a display device. The component mounting line is formed by connecting a plurality of mounting board manufacturing machines. The storage device is connected to the component mounting line via a network to acquire information from each of the plurality of mounting board manufacturing machines. The display device is connected to the storage device via the network and displays a progress status of set-up work executed when changing a type of a mounting board manufactured by the component mounting line based on information stored in the storage device.Type: GrantFiled: October 18, 2017Date of Patent: December 31, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kazuyoshi Harada, Takuya Yamazaki, Atsushi Nakazono, Hiroshi Ando
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Patent number: 10345792Abstract: In two component mounting lines or more each including the plurality of the component mounters, a set-up changing work time, necessary for executing set-up changing work in the two component mounting lines or more based on the number of workers assigned for production in the two component mounting lines or more in each time zone, and the number of workers necessary for the set-up changing work necessary when the mounting board is changed in the two component mounting lines or more, is calculated; and a production completion time, which includes a set-up changing work time and at which the production of all the mounting boards that are the production targets is completed, is calculated; and a group is determined so that the production completion time is shortened within a predetermined time period in the two component mounting lines or more.Type: GrantFiled: January 9, 2018Date of Patent: July 9, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takuya Yamazaki, Atsushi Nakazono, Hiroshi Ando, Kazuyoshi Harada
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Publication number: 20190078617Abstract: The fluid dynamic bearing including: a pair of bearing surfaces (8a1 and 8a2) having dynamic pressure generating grooves (G1 and G2) on an inner peripheral surface (8a); a pair of first smooth surfaces (8a4 and 8a5) formed between both the bearing surfaces (8a1 and 8a2) so as to be adjacent to the respective bearing surfaces (8a1 and 8a2); and a relief portion (8a3), which is formed between both the first smooth surfaces (8a4 and 8a5), and has a diameter larger than those of the pair of bearing surfaces (8a1 and 8a2).Type: ApplicationFiled: February 28, 2017Publication date: March 14, 2019Inventor: Kazuyoshi HARADA
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Publication number: 20180206372Abstract: A group determination method includes an external set-up work time calculation step of calculating an external set-up work time for an external set-up work by which a component supplier used in a group that is a next production target of a group under production in a component mounting line, including a plurality of the component mounters capable of attaching and detaching a component supply carriage which can arrange a plurality of the component suppliers (tape feeders), is removed from the component mounting line and arranged in the component supply carriage; and a production completion time calculation step of calculating a production completion time at which the production of all the mounting boards that are the production targets is completed in consideration of the external set-up work time.Type: ApplicationFiled: January 10, 2018Publication date: July 19, 2018Inventors: TAKUYA YAMAZAKI, ATSUSHI NAKAZONO, HIROSHI ANDO, KAZUYOSHI HARADA
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Publication number: 20180203436Abstract: In two component mounting lines or more each including the plurality of the component mounters, a set-up changing work time, necessary for executing set-up changing work in the two component mounting lines or more based on the number of workers assigned for production in the two component mounting lines or more in each time zone, and the number of workers necessary for the set-up changing work necessary when the mounting board is changed in the two component mounting lines or more, is calculated; and a production completion time, which includes a set-up changing work time and at which the production of all the mounting boards that are the production targets is completed, is calculated; and a group is determined so that the production completion time is shortened within a predetermined time period in the two component mounting lines or more.Type: ApplicationFiled: January 9, 2018Publication date: July 19, 2018Inventors: TAKUYA YAMAZAKI, ATSUSHI NAKAZONO, HIROSHI ANDO, KAZUYOSHI HARADA
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Publication number: 20180113444Abstract: A component mounting system includes a component mounting line, a storage device, and a display device. The component mounting line is formed by connecting a plurality of mounting board manufacturing machines. The storage device is connected to the component mounting line via a network to acquire information from each of the plurality of mounting board manufacturing machines. The display device is connected to the storage device via the network and displays a progress status of set-up work executed when changing a type of a mounting board manufactured by the component mounting line based on information stored in the storage device.Type: ApplicationFiled: October 18, 2017Publication date: April 26, 2018Inventors: KAZUYOSHI HARADA, TAKUYA YAMAZAKI, ATSUSHI NAKAZONO, HIROSHI ANDO
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Patent number: 9943926Abstract: The present invention provides a press-fit joining apparatus 100 where two collet-chuck-type electrodes (first collet-chuck-type electrode 160 and second collet-chuck-type electrode 170) are held using a die set structural body 130 and a sub platen structural body 140. According to the press-fit joining apparatus 100 of the present invention, it is possible to manufacture a product which is required to have higher coaxiality and higher joining strength than conventional products (for example, products such as a drive force transmitting part, the manufacture of which requires the supply of a large and uniform electric current to a joining portion).Type: GrantFiled: January 21, 2014Date of Patent: April 17, 2018Assignee: TK CO., LTD.Inventors: Kazuyoshi Harada, Koji Harada, Kiyoshi Takemura, Akira Nozue
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Publication number: 20170067506Abstract: Provided is a sintered bearing (8) having a plurality of axial grooves (8c1) equiangularly arranged in an outer peripheral surface (8c) thereof and a plurality of dynamic pressure generating grooves (8a11) equiangularly arranged in an inner peripheral surface (8a) thereof, in which a number of the plurality of axial grooves (8c1) is an integral multiple of a number of the plurality of dynamic pressure generating grooves (8a11) on the same circumference.Type: ApplicationFiled: February 17, 2015Publication date: March 9, 2017Inventors: Kazuyoshi HARADA, Tetsuya KURIMURA
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Publication number: 20160271723Abstract: The present invention provides a press-fit joining apparatus 100 where two collet-chuck-type electrodes (first collet-chuck-type electrode 160 and second collet-chuck-type electrode 170) are held using a die set structural body 130 and a sub platen structural body 140. According to the press-fit joining apparatus 100 of the present invention, it is possible to manufacture a product which is required to have higher coaxiality and higher joining strength than conventional products (for example, products such as a drive force transmitting part, the manufacture of which requires the supply of a large and uniform electric current to a joining portion).Type: ApplicationFiled: January 21, 2014Publication date: September 22, 2016Inventors: Kazuyoshi HARADA, Koji HARADA, Kiyoshi TAKEMURA, Akira NOZUE