Patents by Inventor Kenichiro Ishikura
Kenichiro Ishikura 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: 20210040983Abstract: A propeller shaft as a power transmission shaft includes a CFRP tube formed in a cylindrical shape as a shaft member, wherein a helical layer portion mainly bearing torsional strength and bending strength is made of carbon fiber of first carbon fiber material having a relatively high tensile strength (or a tensile elasticity), and wherein a hoop layer portion that is disposed at least one of inside and outside of the helical layer portion in a radial direction with respect to a rotational axis thereof and that does not bear torsional strength or bending strength is made of carbon fiber of second carbon fiber material having a tensile strength (or a tensile elasticity) lower than that of the first carbon fiber material.Type: ApplicationFiled: January 28, 2019Publication date: February 11, 2021Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Kenichi SUGIYAMA, Kenichiro ISHIKURA
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Publication number: 20200370603Abstract: A propeller shaft as a power transmission shaft is provided between vehicle-side first second shaft parts, and a first tube as a first shaft member is connected to the first shaft part through a first joint member and to the second shaft part through a second joint member. The first tube is connected to the first joint member through a first collar member and to the second joint member through a second collar member. The first collar member includes a first main body part exposed from a first end portion of the first tube, and a first insertion part inserted into the inside of the first end portion. In at least the first collar member, the maximum value of the outer diameter of the first main body part is set to be no greater than the maximum value of the outer diameter of the first insertion part.Type: ApplicationFiled: August 28, 2018Publication date: November 26, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yasutomo MABE, Toshiyuki MASUDA, Hiromichi KOMAI, Kenichiro ISHIKURA
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Publication number: 20200217371Abstract: A power transmission shaft includes: a bearing including a cylindrical portion, an internal spline portion, and an internal spline side annular groove including a bottom surface, and a first side wall and a second side wall, the first side wall which includes a first inclination surface inclined with respect to the rotation axis of the shaft portion, and on which the circlip is abutted in a state where a radius of the circlip is decreased within the internal spline side annular groove, and the second side wall on which the circlip is abutted in the state where the radius of the circlip is decreased within the internal spline side annular groove.Type: ApplicationFiled: August 28, 2018Publication date: July 9, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Xiaojin ZHU, Yasutomo MABE, Kenichiro ISHIKURA
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Patent number: 10690192Abstract: A propeller shaft includes a shaft part and a a first yoke having a fixing portion, a connecting portion, a first yoke portion and a first concave portion. The connecting portion is provided apart from a first concave portion in the direction of the rotation axis of the shaft part. An outside diameter of the connecting portion is greater than an outside diameter of the shaft part in a radial direction of the rotation axis of the shaft part.Type: GrantFiled: June 26, 2019Date of Patent: June 23, 2020Assignee: Hitachi Automotive Systems Hyushu, Ltd.Inventors: Kenichiro Ishikura, Hidekazu Aoki, Hiromichi Komai
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Publication number: 20200116229Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).Type: ApplicationFiled: May 18, 2018Publication date: April 16, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yasutomo MABE, Kiyokazu NAKANE, Hiromichi KOMAI, Xiaojin ZHU, Toshiyuki MASUDA, Kenichiro ISHIKURA
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Publication number: 20200040946Abstract: According to the present invention, a low surface-roughness part (114a) is formed at a first tapered part (114), and, as a result, the roughness of an opening-edge of a groove part (113a) of an internal spline part (113) that opens at the first tapered part (114) is reduced, and surface pressure applied by the opening edge to a tooth (123b) of an external spline part (123) can be reduced. As a result, the opening edge of the groove part (113a) of the internal spline part (113) can be kept from digging into the tooth (123b), and variation, between products, in the insertion load of a second shaft part (12) can be suppressed.Type: ApplicationFiled: September 14, 2017Publication date: February 6, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yasushi AKITA, Kazuhisa YOKOYAMA, Kenichiro ISHIKURA, Tatsuya SHIMODA
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Patent number: 10466055Abstract: An information processing device acquires information which corresponds to a location where a user exited a transportation means, and presents the information to the user. The information processing device includes (i) a boarding-and-exit determining section (42) configured to determine whether the user has exited a transportation means and (ii) a spot information presenting section (47) configured to present information which corresponds to a location where the user exited the transportation means, in a case where the boarding-and-exit determining section (42) determines that the user has exited the transportation means.Type: GrantFiled: December 11, 2015Date of Patent: November 5, 2019Assignee: Sharp Kabushiki KaishaInventors: Fumitoshi Tanoue, Shuji Daioku, Kengo Tajima, Yu Yumura, Kenichiro Ishikura, Akiko Andoh
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Publication number: 20190316636Abstract: A propeller shaft includes a shaft part and a a first yoke having a fixing portion, a connecting portion, a first yoke portion and a first concave portion. The connecting portion is provided apart from a first concave portion in the direction of the rotation axis of the shaft part. An outside diameter of the connecting portion is greater than an outside diameter of the shaft part in a radial direction of the rotation axis of the shaft part.Type: ApplicationFiled: June 26, 2019Publication date: October 17, 2019Inventors: Kenichiro ISHIKURA, Hidekazu AOKI, Hiromichi KOMAI
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Patent number: 10378591Abstract: A propeller shaft includes a shaft part, a first yoke, a connecting portion, a first yoke portion, a first concave portion, and a second yoke having a flange and a second yoke portion. The flange has a bolt insertion hole into which a securing member is inserted, and is connected to a second shaft part of a vehicle side by the securing member. The second yoke portion is provided at the flange, and has a shape that extends in a direction of a rotation axis of the shaft part. A cruciform shaft couples the first yoke portion with the second yoke portion.Type: GrantFiled: October 20, 2017Date of Patent: August 13, 2019Assignee: Hitachi Automotive Systems Kyushu, Ltd.Inventors: Kenichiro Ishikura, Hidekazu Aoki, Hiromichi Komai
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Publication number: 20180038418Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: ApplicationFiled: October 20, 2017Publication date: February 8, 2018Inventors: Kenichiro ISHIKURA, Hidekazu AOKI, Hiromichi KOMAI
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Patent number: 9850959Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: GrantFiled: January 24, 2017Date of Patent: December 26, 2017Assignee: Hitachi Automotive Systems Kyushu, Ltd.Inventors: Kenichiro Ishikura, Hidekazu Aoki, Hiromichi Komai
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Publication number: 20170328717Abstract: An information processing device acquires information which corresponds to a location where a user exited a transportation means, and presents the information to the user. The information processing device includes (i) a boarding-and-exit determining section (42) configured to determine whether the user has exited a transportation means and (ii) a spot information presenting section (47) configured to present information which corresponds to a location where the user exited the transportation means, in a case where the boarding-and-exit determining section (42) determines that the user has exited the transportation means.Type: ApplicationFiled: December 11, 2015Publication date: November 16, 2017Applicant: Sharp Kabushiki KaishaInventors: Fumitoshi TANOUE, Shuji DAIOKU, Kengo TAJIMA, Yu YUMURA, Kenichiro ISHIKURA, Akiko ANDOH
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Publication number: 20170130781Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: ApplicationFiled: January 24, 2017Publication date: May 11, 2017Inventors: Kenichiro ISHIKURA, Hidekazu AOKI, Hiromichi KOMAI
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Patent number: 9605716Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: GrantFiled: April 8, 2016Date of Patent: March 28, 2017Assignee: Hitachi Automotive Systems Kyushu, Ltd.Inventors: Kenichiro Ishikura, Hidekazu Aoki, Hiromichi Komai
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Publication number: 20160223028Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: ApplicationFiled: April 8, 2016Publication date: August 4, 2016Inventors: Kenichiro ISHIKURA, Hidekazu AOKI, Hiromichi KOMAI
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Patent number: 9334904Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: GrantFiled: May 27, 2014Date of Patent: May 10, 2016Assignee: Hitachi Automotive Systems Kyushu, Ltd.Inventors: Kenichiro Ishikura, Hidekazu Aoki, Hiromichi Komai
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Publication number: 20140357383Abstract: A propeller shaft has a first yoke having a fixing portion, a pair of first bifurcated yoke portions extending from one end portion of the fixing portion in an axial direction, and a first bearing hole formed at each first yoke portion and securing therein a first bearing that holds a cruciform shaft; a second yoke coupled to the first yoke through the cruciform shaft and secured to a predetermined member, and having a mounting flange, and a bolt insertion hole which is formed at the mounting flange and into which a bolt to secure the second yoke to the predetermined member is inserted; and a securing member securing the mounting flange of the second yoke to the predetermined member through the bolt by a fastening tool. Each first yoke portion is provided with a first concave portion that slides thereon an outer circumferential surface of the fastening tool.Type: ApplicationFiled: May 27, 2014Publication date: December 4, 2014Applicant: Hitachi Automotive Systems Kyushu, Ltd.Inventors: Kenichiro ISHIKURA, Hidekazu AOKI, Hiromichi KOMAI
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Publication number: 20090085892Abstract: There is provided an input device using a touch panel allowing input operations to be performed without viewing an input surface. The input device includes a transparent capacitance-type touch panel (12) formed in the shape of a dome, and a liquid crystal panel (14a) disposed on the back side of the touch panel. The position detection processing portion (20) applies predetermined voltage to four terminals (T1 to T4) of the touch panel, and detects current flowing via each terminal to detect the coordinates of a point on the touch panel operated by the operator's finger (100) based on the detected current value. The data processing portion (30) causes a liquid crystal display device (14) to display an operation screen, including graphics, symbols, etc.Type: ApplicationFiled: February 2, 2007Publication date: April 2, 2009Inventors: Kenichiro Ishikura, Seiji Sato, Tomohiko Nishimura, Katsunori Shirai, Minoru Mayumi
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Publication number: 20080099253Abstract: In a panel (1a) of a touch panel (1), a coordinate axis x is set by connecting points A and B that are current observation points. When a designated point P is designated on the panel (1a), currents (i1) and (i2) corresponding respectively to a distance between the designated point P and the point A and a distance between the designated point P and the point B flow respectively to a resistive film between the points P and A and a resistive film between the points P and B by voltage sources (e1) and (e2), and a sum of these currents flows to an impedance Z connected to the designated point P. A coordinate x of the designated point P is calculated by detecting the currents (i1) and (i2).Type: ApplicationFiled: October 28, 2005Publication date: May 1, 2008Applicant: SHARP KABUSHIKI KAISHAInventors: Kenichiro Ishikura, Saburo Miyamoto, Hiroshi Hamada