Patents by Inventor Ryuji Ibaraki
Ryuji Ibaraki 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: 20110092333Abstract: A vehicle power transmission device having a structure with a carrier of a planetary gear device brought into spline fitting with a case that is a non-rotating member to stop rotating and a ring gear of the planetary gear device rotatably supported by the case via a bearing, is provided with a play reducing device that presses the carrier against the case to reduce a play in thrust direction formed between the carrier and the case.Type: ApplicationFiled: October 6, 2010Publication date: April 21, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Sohei MURATA, Ryuji Ibaraki, Ryuichi Hasegawa, Shigetsugu Iwata, Yoshinori Morita, Makoto Tomita, Takafumi Koshida
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Patent number: 7918753Abstract: A hydraulic control unit (18), for a power transmission system having an oil receiving device (26,37), which controls a power transmitting condition of the power transmission system, and an oil reserving device for feeding the oil to the oil receiving device, wherein the oil reserving device comprises a piston (59) in which a diametrically large portion and a diametrically small portion are arranged integrally and coaxially, a first hydraulic chamber (57) in which the diametrically large portion, and a second hydraulic chamber (58) in which the diametrically small portion are housed liquid-tightly and movably back and forth; and an oil feeding amount control device for feeding the oil of the first hydraulic chamber to the oil receiving device, by raising the oil pressure in the second hydraulic chamber (58) to operate the piston (59).Type: GrantFiled: June 9, 2005Date of Patent: April 5, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Akira Murakami, Makoto Funahashi, Shinichi Ito, Toshihiro Aoyama, Michio Yoshida, Ryuji Ibaraki, Takashi Kuwabara, Toshiya Yamashita
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Patent number: 7905807Abstract: A hydraulic control apparatus includes a switching device that switches between a hydraulic servo of the plurality of hydraulic servos of the first friction engaging element and a hydraulic servo of the plurality of hydraulic servos of the second friction engaging element so as to supply a control pressure from the one pressure regulating solenoid valve to each of the plurality of hydraulic servos, wherein the switching enables a control of an engagement and disengagement of the first friction engaging element and the second friction engagement element using the one pressure regulating solenoid valve.Type: GrantFiled: December 21, 2007Date of Patent: March 15, 2011Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Tetsuya Shimizu, Kazuyuki Noda, Kazunori Ishikawa, Satoru Kasuya, Tooru Matsubara, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata
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Patent number: 7811191Abstract: A vehicular power transmitting system including a transmission portion constituting a part of a power transmitting path, an electric motor connected to the power transmitting path, an electrically controlled differential portion connected to the electric motor and having a differential state controllable according to a change of an operating speed of the electric motor, a casing accommodating the transmission portion, the electric motor and the electrically controlled differential portion, and a support member for supporting a rotor of the electric motor, the support member including a support portion formed in one axial end portion thereof, at which the rotor is supported rotatably about its axis, and a tapered portion having a diameter increasing in an axial direction from the one axial end portion toward the other axial end portion at which the support member is fixed to the casing, and wherein a winding portion of a stator of the electric motor is disposed in a space formed radially outwardly of the taperType: GrantFiled: March 2, 2009Date of Patent: October 12, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.Inventors: Yuji Iwase, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata, Tatsuya Imamura, Takuma Kakinami, Natsuki Sada, Tomoo Atarashi, Nobukazu Ike
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Patent number: 7803076Abstract: A belt type continuously variable transmission is provided with two pulley shafts arranged in parallel a predetermined distance apart from each other, a movable sheave provided on each pulley shaft and being able to slide in an axial direction thereof, a fixed sheave arranged on each pulley shaft so as to face the moveable sheave, the fixed sheave and the movable sheave that face each another on each pulley shaft together forming a groove therebetween, and a belt wound around the grooves. At least one of the movable sheaves and a motor serving as a driving source for the moving sheave are integrally provided.Type: GrantFiled: December 6, 2004Date of Patent: September 28, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Shioiri, Yasuo Hojo, Hiroaki Kimura, Ryuji Ibaraki
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Patent number: 7775336Abstract: Lubricating oil supply holes are drilled into a first member that is fitted to a plurality of first annular plates by a spline. Of splines to which each lubricating oil supply hole corresponds, lubricating oil grooves provided in the plurality of first annular plates do not overlap the splines on at least one of the front and rear surfaces of the first annular plates, and therefore lubricating oil flowing out of the lubricating oil supply holes is dispersed in a circumferential direction and flows from the inner periphery to the outer periphery of the first annular plates, rather than gathering in each lubricating oil groove and flowing in an outer peripheral direction. As a result, a force generated by an axial lubricating oil flow, which acts in a direction for causing the second annular plates to contact friction materials on the first annular plates, is suppressed, leading to a reduction in drag torque.Type: GrantFiled: February 8, 2007Date of Patent: August 17, 2010Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Aishin Kako Kabushiki KaishaInventors: Masaaki Nishida, Satoru Kasuya, Masashi Kito, Yoshihisa Yamamoto, Akitomo Suzuki, Masato Fujikawa, Ryuji Ibaraki, Masatoshi Adachi, Tsuyoshi Mikami, Hideo Ono
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Patent number: 7766778Abstract: A vehicular drive system which includes a first electric motor, a power distributing mechanism (first gear device), a second electric motor, and a step-variable automatic transmission (second gear device), and in which the first electric motor and the power distributing mechanism constitute a first unit, while the second electric motor and the automatic transmission constitute a second unit, and wherein the power distributing mechanism has an output shaft, and the automatic transmission has an input shaft which is connected to the output shaft, whereby a drive force can be transmitted between the first unit and the second unit. The individually prepared first unit and the second unit are assembled together into the vehicular drive system such that the output shaft of the power distributing mechanism and the input shaft of the automatic transmission are connected to each other. Accordingly, the drive system has an improved efficiency of assembling.Type: GrantFiled: September 13, 2005Date of Patent: August 3, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Atsushi Tabata, Yutaka Taga, Terufumi Miyazaki, Ryuji Ibaraki
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Patent number: 7762365Abstract: An electric vehicle drive control device that includes a first electric motor; a second electric motor; a differential device that includes first, second, and third rotational elements, wherein the first rotational element is connected to the first electric motor, the second rotational element is connected to the second electric motor via a transmission shaft, and the third rotational element is connected to an engine; a transmission for shifting that shifts a speed of a rotation transferred to from the transmission shaft; and a controller that: controls electric motor control processing means for controlling a rotation speed of the first electric motor in conjunction with shifting performed by the transmission; and adjusts electric power adjustment processing means for adjusting an electric power consumptions generated in the first and second electric motors, by controlling an output supplied to the second electric motor in conjunction with the control of the rotation speed of the first electric motor.Type: GrantFiled: October 26, 2006Date of Patent: July 27, 2010Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Makoto Iwanaka, Shigeki Takami, Ryuji Ibaraki, Tooru Matsubara, Hiroyuki Shibata
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Publication number: 20100179010Abstract: A hybrid vehicle power transmission device provided with a power distribution mechanism composed of a planetary gear device for distributing motive power of a drive source to a motor and an output shaft is further provided with a damper device in a power transmission path between the power distribution mechanism and a first motor. Consequently, the damper device receives only reaction torque dealt by the first motor through the power distribution mechanism with respect to drive torque of an engine. Thus, since the torque transmitted to the damper device is smaller than the drive torque of the engine, the torque capacity of the damper device can be decreased and the size of the damper device can be reduced. As a result, the overall size of the power transmission device can be similarly reduced.Type: ApplicationFiled: November 23, 2009Publication date: July 15, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuro KUZUYA, Ryuji Ibaraki, Kenji Odaka, Yuji Iwase, Tatsushi Takenaka, Tomoyuki Maruyama, Koichi Kondo
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Patent number: 7753814Abstract: A belt type continuously variable transmission in which a pulley shaft is supported by bearings provided at two positions that are apart from each other in an axial direction of the pulley shaft and a supply oil passage for supplying hydraulic fluid to a pulley hydraulic chamber includes a radial direction oil passage that is formed in the pulley shaft, the radial direction oil passage is formed on an outside of an area between the two positions. Also, one of the bearings is provided near the radial direction oil passage and on an outer surface side of a cylinder member whose inner surface side forms the pulley hydraulic chamber for a movable sheave that is fixed to the pulley shaft. With this structure, concentration of stress on the radial direction oil passage can be avoided, and therefore strength of the pulley shaft can be secured.Type: GrantFiled: March 18, 2005Date of Patent: July 13, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hirofumi Nozawa, Ryuji Ibaraki, Takuya Okada, Yasuo Hojo
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Patent number: 7753149Abstract: A rotor shaft of a first electric motor is connected to a crankshaft of the engine by being fit to a transmitting member that is coupled to the crankshaft. The stator and rotor shaft of the first electric motor are supported by a case housing the first electric motor.Type: GrantFiled: November 3, 2005Date of Patent: July 13, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Atsushi Tabata, Yutaka Taga, Terufumi Miyazaki, Ryuji Ibaraki
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Patent number: 7727099Abstract: A vehicle driving device includes a case with a case body; a transmission mechanism having hydraulically controlled frictional engaging devices; an electric motor housed in the case body; and a hydraulic controller that controls oil pressure supplied to the frictional engaging devices, with the hydraulic controller disposed on an outer wall of the case body. The case body has an opening at one end of the case body that is structured to allow the transmission mechanism and the electric motor to be inserted through the opening, and an end wall portion, having a bearing part that supports an output shaft of the transmission mechanism, that is provided at another end of the case body integrally with the case body.Type: GrantFiled: March 7, 2007Date of Patent: June 1, 2010Assignee: Aisin AW Co., Ltd.Inventors: Satoru Kasuya, Masashi Kito, Atsushi Tabata, Takuma Kakinami, Masahiro Kojima, Ryuji Ibaraki, Yuji Iwase
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Patent number: 7670244Abstract: A power transmission system having an input member (6) and an output member (2) for transmitting power, and an oil pump (7) for discharging oil by a relative rotation between a first (8, 70) and a second rotary members (9, 87, 88) which is driven by the power transmitted between the input member (6) and the output member (2), characterized in that: the input member (6) and the first rotary member (8, 70) are connected with each other in a power transmittable manner, and the output member (2) and the second rotary member (9, 87, 88) are connected with each other in a power transmittable manner; and characterized by comprising: a transmission member (11, 13, 76, 77) for connecting the first and the second rotary members in a power transmittable manner; and a control valve (9, 87, 88) for controlling a power transmission state between the first and the second rotary members, by controlling a discharge condition of the oil pump (7).Type: GrantFiled: March 9, 2005Date of Patent: March 2, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Shioiri, Ryuji Ibaraki, Yasuo Hojo, Hitoshi Nomasa
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Patent number: 7632201Abstract: A hybrid drive apparatus including an input shaft; a first motor and a second motor; a power distributing planetary gear; an intermediate transmission shaft; and a partition wall provided between a motor part including the first motor and the second motor and a transmission part including the transmission such that the intermediate shaft passes through the partition wall.Type: GrantFiled: October 26, 2006Date of Patent: December 15, 2009Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Shigeki Takami, Tomoo Atarashi, Hirotaka Yata, Makoto Iwanaka, Takuma Kakinami, Yasuo Hojo, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata, Yuji Iwase, Tooru Matsubara, Hiroyuki Shibata
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Publication number: 20090258747Abstract: A vehicular power transmitting system including a transmission portion constituting a part of a power transmitting path, an electric motor connected to the power transmitting path, an electrically controlled differential portion connected to the electric motor and having a differential state controllable according to a change of an operating speed of the electric motor, a casing accommodating the transmission portion, the electric motor and the electrically controlled differential portion, and a support member for supporting a rotor of the electric motor, the support member including a support portion formed in one axial end portion thereof, at which the rotor is supported rotatably about its axis, and a tapered portion having a diameter increasing in an axial direction from the one axial end portion toward the other axial end portion at which the support member is fixed to the casing, and wherein a winding portion of a stator of the electric motor is disposed in a space formed radially outwardly of the taperType: ApplicationFiled: March 2, 2009Publication date: October 15, 2009Applicants: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.Inventors: Yuji Iwase, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata, Tatsuya Imamura, Takuma Kakinami, Natsuki Sada, Tomoo Atarashi, Nobukazu Ike
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Publication number: 20090227416Abstract: A power transmission unit in which an inspection and tuning of an electric motor can be carried out easily. In the power transmission unit, a rotor of the electric motor is arranged between a first shaft of an input side and a second shaft of an output side, and in which the first shaft, the second shaft, and the rotor are integrally connected at least in a rotational direction. The first shaft is connected with the rotor, and the first shaft is also connected with the second shaft.Type: ApplicationFiled: March 22, 2007Publication date: September 10, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuma Kakinami, Yasuo Hojo, Masahiro Kojima, Ryuji Ibaraki, Atsushi Tabata, Satoru Kasuya, Masashi Kito
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Publication number: 20090124454Abstract: A control system capable of ensuring an engine braking force and a drive force even in case a failure occurs in a speed change ratio control or a deceleration control of an automatic transmission. The control system includes: a failure detecting mechanism for detecting a failure to set any of predetermined speed change ratios; and a speed change commanding mechanism for outputting a speed change command to set a speed change ratio larger than the current speed change ratio in accordance with a signal outputted when the failure detecting mechanism detects the failure.Type: ApplicationFiled: October 26, 2006Publication date: May 14, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Tabata, Ryuji Ibaraki, Tooru Matsubara, Yukihiko Ideshio, Hiroyuki Shibata
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Publication number: 20090118095Abstract: To provide a control system for a power transmission system capable of speed change control in conformity of a deceleration demand. For this purpose, there is provided a control system for a power transmission system, which has at least two transmission units having different responsiveness to a speed change and capable of setting a speed change ratio individually, and in which a total speed change ratio is determined according to the speed change ratios of the transmission units, comprising: a speed change control means for changing a priority order to carry out a speed change operation of the individual transmission units to achieve a predetermined deceleration in conformity with a content of the deceleration demand, when the predetermined deceleration is demanded.Type: ApplicationFiled: October 26, 2006Publication date: May 7, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Atsushi Tabata, Ryuji Ibaraki, Tooru Matsubara, Yukihiko Ideshio, Hiroyuki Shibata
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Publication number: 20090062044Abstract: A belt type continuously variable transmission that includes a primary pulley; a secondary pulley; a belt where the primary pulley and the secondary pulley are bound; a positioning hydraulic chamber that presses a primary movable sheave to a primary fixed sheave; a supply-side valve that permits working oil to be supplied from the outside to the positioning hydraulic chamber; and a discharge-side control valve that controls permission or prohibition of discharge of the working oil from the positioning hydraulic chamber to the outside. The discharge-side control valve prohibits discharge of the working oil from the positioning hydraulic chamber to the outside when a position of the primary movable sheave is kept constant in the axial direction with respect to the primary fixed sheave.Type: ApplicationFiled: April 17, 2006Publication date: March 5, 2009Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Shioiri, Hiroaki Kimura, Ryuji Ibaraki
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Patent number: 7492114Abstract: An electric vehicle drive control device includes a first electric motor; a second electric motor; a differential device that includes first, second, and third rotational elements, wherein the first rotational element is connected to the first electric motor, the second rotational element is connected to the second electric motor via a transmission shaft, and the third rotational element is connected to an engine; a transmission that shifts a speed of a rotation transferred from the transmission shaft; and a controller that: calculates an inertia compensating torque that compensates for a change in a rotation speed caused by inertia while the transmission performs shifting; and corrects a target torque for the first electric motor in accordance with the inertia compensating torque.Type: GrantFiled: October 26, 2006Date of Patent: February 17, 2009Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Makoto Iwanaka, Shigeki Takami, Ryuji Ibaraki, Tooru Matsubara, Hiroyuki Shibata