Patents by Inventor Kuniaki Wakamatsu
Kuniaki Wakamatsu 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: 11897577Abstract: This saddle-riding type vehicle includes: a transmission that includes a clutch operated by an operation of a slave cylinder; an oil pressure actuator that includes a master cylinder which generates an oil pressure on an operation oil; an oil pressure valve unit that controls transmission of the oil pressure generated by the master cylinder to the slave cylinder; a master-side connection pipe arrangement that connects the master cylinder to the oil pressure valve unit; and a slave-side connection pipe arrangement that connects the oil pressure valve unit to the slave cylinder, wherein the slave cylinder and the oil pressure valve unit are arranged on one side part in a vehicle width direction of the saddle-riding type vehicle, and the oil pressure actuator is arranged on another side part in the vehicle width direction of the saddle-riding type vehicle.Type: GrantFiled: November 19, 2019Date of Patent: February 13, 2024Assignee: HONDA MOTOR CO., LTD.Inventors: Akira Tokito, Kuniaki Wakamatsu, Eisuke Kajihara, Junya Ono, Go Morita
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Patent number: 11414155Abstract: A reactive force generation device (130) of clutch-by-wire system is a reactive force generation device which generates a reactive force on a clutch lever (51), and includes a piston structure in which an air bleeding hole (139) is provided, and a contact member (133) which is in contact with the clutch lever (51) and in which the air bleeding hole 139 is formed.Type: GrantFiled: May 24, 2019Date of Patent: August 16, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Masahiro Shimizu, Kuniaki Wakamatsu, Yoshinobu Shiomi, Akira Tokito, Go Morita, Junya Ono
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Publication number: 20220135181Abstract: This saddle-riding type vehicle includes: a transmission that includes a clutch operated by an operation of a slave cylinder; an oil pressure actuator that includes a master cylinder which generates an oil pressure on an operation oil; an oil pressure valve unit that controls transmission of the oil pressure generated by the master cylinder to the slave cylinder; a master-side connection pipe arrangement that connects the master cylinder to the oil pressure valve unit; and a slave-side connection pipe arrangement that connects the oil pressure valve unit to the slave cylinder, wherein the slave cylinder and the oil pressure valve unit are arranged on one side part in a vehicle width direction of the saddle-riding type vehicle, and the oil pressure actuator is arranged on another side part in the vehicle width direction of the saddle-riding type vehicle.Type: ApplicationFiled: November 19, 2019Publication date: May 5, 2022Inventors: Akira Tokito, Kuniaki Wakamatsu, Eisuke Kajihara, Junya Ono, Go Morita
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Patent number: 11162547Abstract: A clutch-by-wire system includes a clutch lever body (60) which is operated by an occupant, a knocker (70) which engages with the clutch lever body (60) and rotates around a rotation axis (O), a reactive force generation device (130) which engages with the knocker (70) and generates an operation reactive force on the clutch lever body (60), and a rotation sensor (160) which detects a rotation angle of the knocker (70).Type: GrantFiled: May 24, 2019Date of Patent: November 2, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Masahiro Shimizu, Kuniaki Wakamatsu, Yoshinobu Shiomi
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Publication number: 20210309317Abstract: A reactive force generation device (130) of clutch-by-wire system is a reactive force generation device which generates a reactive force on a clutch lever (51), and includes a piston structure in which an air bleeding hole (139) is provided, and a contact member (133) which is in contact with the clutch lever (51) and in which the air bleeding hole 139 is formed.Type: ApplicationFiled: May 24, 2019Publication date: October 7, 2021Inventors: Masahiro Shimizu, Kuniaki Wakamatsu, Yoshinobu Shiomi, Akira Tokito, Go Morita, Junya Ono
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Publication number: 20210148419Abstract: A clutch-by-wire system includes a clutch lever body (60) which is operated by an occupant, a knocker (70) which engages with the clutch lever body (60) and rotates around a rotation axis (O), a reactive force generation device (130) which engages with the knocker (70) and generates an operation reactive force on the clutch lever body (60), and a rotation sensor (160) which detects a rotation angle of the knocker (70).Type: ApplicationFiled: May 24, 2019Publication date: May 20, 2021Inventors: Masahiro Shimizu, Kuniaki Wakamatsu, Yoshinobu Shiomi
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Patent number: 7191875Abstract: A disc brake includes a piston seal made of rubber that is shaped to fit into a seal groove on the inner surface of a cylinder of a caliper for a brake piston. To prevent braking effectiveness from being impaired, even if the temperature of a caliper rises in a disc brake for a vehicle, the piston seal and/or the seal groove is shaped to control and contain the effects of thermal expansion due to the heat of the disc brake. The clearance between the piston seal and the seal groove is removed and clearance is provided between parts of the periphery of the piston seal and the seal groove.Type: GrantFiled: July 1, 2002Date of Patent: March 20, 2007Assignee: Honda Giken Kogyp Kabushiki KaishaInventors: Seiji Kurimoto, Kuniaki Wakamatsu, Hidetoshi Toyoda, Shinichi Kuwahara
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Patent number: 7021642Abstract: A steering damper device for a two-wheeled vehicle presents a problem with regard to facilitating the viewability of a meter and to increase the degree of freedom of the meter in layout to bring down the center of gravity of the vehicle. A two-wheeled vehicle includes, at a front end of a main frame, a head pipe for rotatively supporting a steering shaft. At the front part of the head pipe, there is installed a meter stay for supporting a meter. Between the head pipe side and the steering shaft side there is interposed a steering damper device for restricting abrupt run-out of the handlebar. The steering damper device is arranged forward of the head pipe and below the meter stay to make effective use of the space of the vehicle and further to increase the degree of freedom of the meter in design.Type: GrantFiled: June 10, 2004Date of Patent: April 4, 2006Assignee: Honda Motor Co., Ltd.Inventors: Shin Sato, Shogo Kanaumi, Kuniaki Wakamatsu, Hidetoshi Toyoda
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Publication number: 20050017477Abstract: A steering damper device for a two-wheeled vehicle presents a problem with regard to facilitating the viewability of a meter and to increase the degree of freedom of the meter in layout to bring down the center of gravity of the vehicle. A two-wheeled vehicle includes, at a front end of a main frame, a head pipe for rotatively supporting a steering shaft. At the front part of the head pipe, there is installed a meter stay for supporting a meter. Between the head pipe side and the steering shaft side there is interposed a steering damper device for restricting abrupt run-out of the handlebar. The steering damper device is arranged forward of the head pipe and below the meter stay to make effective use of the space of the vehicle and further to increase the degree of freedom of the meter in design.Type: ApplicationFiled: June 10, 2004Publication date: January 27, 2005Inventors: Shin Sato, Shogo Kanaumi, Kuniaki Wakamatsu, Hidetoshi Toyoda
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Publication number: 20030024777Abstract: A disc brake includes a piston seal made of rubber that is shaped to fit into a seal groove on the inner surface of a cylinder of a caliper for a brake piston. To prevent braking effectiveness from being impaired, even if the temperature of a caliper rises in a disc brake for a vehicle, the piston seal and/or the seal groove is shaped to control and contain the effects of thermal expansion due to the heat of the disc brake. The clearance between the piston seal and the seal groove is removed and clearance is provided between parts of the periphery of the piston seal and the seal groove.Type: ApplicationFiled: July 1, 2002Publication date: February 6, 2003Inventors: Seiji Kurimoto, Kuniaki Wakamatsu, Hidetoshi Toyoda, Shinichi Kuwahara
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Patent number: 6325402Abstract: A handlebars support structure for a motorcycle includes a top bridge mounted on an upper portion of a front fork. A rotary shaft is mounted on the top bridge and extends horizontally in a direction of the width of the motorcycle. A handlebars holder for supporting handlebars is mounted on the rotary shaft, such that the handlebars holder can pivot relative to the top bridge about the shaft. A damping unit, including a spring and shock absorber, is interposed between the handlebars holder and the top bridge. The damping unit can absorb small vibrations and large impacts, thereby preventing transmission of the vibrations and the impacts from the front fork to the handlebars.Type: GrantFiled: September 2, 1999Date of Patent: December 4, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kazuhiko Gogo, Kuniaki Wakamatsu