Patents by Inventor Yasuyuki Hagino
Yasuyuki Hagino 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: 10563738Abstract: A vehicular automatic transmission includes a plurality of engagement devices and a plurality of planetary gear sets. Each of the planetary gear sets includes rotating elements. At least one of the rotating elements of one of the plurality of planetary gear sets is coupled to one of the rotating elements of another planetary gear set or one of the engagement devices, via a spline engagement portion. The rotating elements other than the at least one of the rotating elements coupled via the spline engagement portion is coupled to another rotating element or a non-rotary member directly or via one of the engagement devices. The at least one of the rotating elements coupled via the spline engagement portion is configured to be co-rotated with no torque transmitted via the spline engagement portion, when the automatic transmission is placed in a predetermined gear position as one of the plurality of gear positions.Type: GrantFiled: November 22, 2016Date of Patent: February 18, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masashi Ikemura, Hirofumi Ota, Yasuyuki Hagino, Mitsuhiro Toyoda, Yosuke Michikoshi
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Publication number: 20170152921Abstract: A vehicular automatic transmission includes a plurality of engagement devices and a plurality of planetary gear sets. Each of the planetary gear sets includes rotating elements. At least one of the rotating elements of one of the plurality of planetary gear sets is coupled to one of the rotating elements of another planetary gear set or one of the engagement devices, via a spline engagement portion. The rotating elements other than the at least one of the rotating elements coupled via the spline engagement portion is coupled to another rotating element or a non-rotary member directly or via one of the engagement devices. The at least one of the rotating elements coupled via the spline engagement portion is configured to be co-rotated with no torque transmitted via the spline engagement portion, when the automatic transmission is placed in a predetermined gear position as one of the plurality of gear positions.Type: ApplicationFiled: November 22, 2016Publication date: June 1, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masashi IKEMURA, Hirofumi OTA, Yasuyuki HAGINO, Mitsuhiro TOYODA, Yosuke MICHIKOSHI
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Patent number: 8382640Abstract: This apparatus is provided with a clutch mechanism 14. The clutch mechanism 14 is interposed between an engine 11 and a transmission 15, and is coupled to a clutch pedal 28. An operating mode of the clutch mechanism 14 changes in conjunction with a change of an operating position of the clutch pedal 28. In the case that an execution condition is met, the apparatus lowers a maximum operating speed of the clutch mechanism 14 in comparison with a state in which an execution condition is not met. The execution condition includes the following execution start condition that “the operating position of the clutch pedal 28 is a position setting the clutch mechanism 14 to a disengaged state, and a changing speed of the operating position of the clutch pedal 28 in an engaging direction at a time of setting the clutch mechanism 14 to an engaged state from the disengaged state is equal to or higher than a predetermined starting speed”.Type: GrantFiled: June 10, 2008Date of Patent: February 26, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinichi Takeuchi, Kotaro Hoshihara, Shinichiro Watarai, Yasuyuki Hagino
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Patent number: 8376868Abstract: A vibration damping mechanism of a rotation shaft that is not likely to be subject to the limitation in layout and that is capable of stably maintaining damping properties by a frictional contact portion without variation for a long term is provided. The vibration damping mechanism includes a shaft for outputting torque inputted from its input side end portion to its output side end portion, and a damping member having a fixed portion fixed to the shaft and a frictional contact portion held in frictional contact with the shaft, in which the frictional contact portion is provided with a clamping band for urging the frictional contact portion toward the shaft to be held in frictional contact with the shaft at a predetermined contact pressure.Type: GrantFiled: October 1, 2009Date of Patent: February 19, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Yasuyuki Hagino
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Publication number: 20110207538Abstract: A vibration damping mechanism of a rotation shaft that is not likely to be subject to the limitation in layout and that is capable of stably maintaining damping properties by a frictional contact portion without variation for a long term is provided. The vibration damping mechanism includes a shaft for outputting torque inputted from its input side end portion to its output side end portion, and a damping member having a fixed portion fixed to the shaft and a frictional contact portion held in frictional contact with the shaft, in which the frictional contact portion is provided with a clamping band for urging the frictional contact portion toward the shaft to be held in frictional contact with the shaft at a predetermined contact pressure.Type: ApplicationFiled: October 1, 2009Publication date: August 25, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Yasuyuki Hagino
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Publication number: 20100298093Abstract: This apparatus is provided with a clutch mechanism 14. The clutch mechanism 14 is interposed between an engine 11 and a transmission 15, and is coupled to a clutch pedal 28. An operating mode of the clutch mechanism 14 changes in conjunction with a change of an operating position of the clutch pedal 28. In the case that an execution condition is met, the apparatus lowers a maximum operating speed of the clutch mechanism 14 in comparison with a state in which an execution condition is not met. The execution condition includes the following execution start condition that “the operating position of the clutch pedal 28 is a position setting the clutch mechanism 14 to a disengaged state, and a changing speed of the operating position of the clutch pedal 28 in an engaging direction at a time of setting the clutch mechanism 14 to an engaged state from the disengaged state is equal to or higher than a predetermined starting speed”.Type: ApplicationFiled: June 10, 2008Publication date: November 25, 2010Applicant: TOYOTA JIDOSHA KABUSHIKIInventors: Shinichi Takeuchi, Kotaro Hoshihara, Shinichiro Watarai, Yasuyuki Hagino