Patents by Inventor Takeo Iino
Takeo Iino 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: 9441628Abstract: An electric pump unit for a transmission, which supplies a hydraulic pressure to the transmission, includes: a pump which takes in and discharges oil; and a pump driving electric motor including a motor shaft connected to the pump, a motor rotor fixedly provided on the motor shaft, and a motor stator disposed around a circumference of the motor rotor. The pump and the electric motor are integrated with a lid that tightly closes an opening in a recess portion which is formed on a transmission housing of the transmission and into which the oil is introduced, and are accommodated within the recess portion.Type: GrantFiled: August 4, 2010Date of Patent: September 13, 2016Assignee: JTEKT CORPORATIONInventors: Takatoshi Sakata, Akihiko Kawano, Takeo Iino, Naohito Yoshida
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Publication number: 20120128513Abstract: An electric pump unit for a transmission, which supplies a hydraulic pressure to the transmission, includes: a pump which takes in and discharges oil; and a pump driving electric motor including a motor shaft connected to the pump, a motor rotor fixedly provided on the motor shaft, and a motor stator disposed around a circumference of the motor rotor. The pump and the electric motor are integrated with a lid that tightly closes an opening in a recess portion which is formed on a transmission housing of the transmission and into which the oil is introduced, and are accommodated within the recess portion.Type: ApplicationFiled: August 4, 2010Publication date: May 24, 2012Applicant: JTEKT CORPORATIONInventors: Takatoshi Sakata, Akihiko Kawano, Takeo Iino, Naohito Yoshida
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Publication number: 20060228063Abstract: A sensor apparatus (2) includes an acceleration sensor (11) provided in a vehicle body side raceway member (3) and detecting a lateral G, and a processing means (31) for computing a load by using an output of the acceleration sensor (11). The processing means (31) determines a lateral load Fy, a vertical load Fz, and a moment Mx caused by the lateral load on the basis of an output G of the acceleration sensor (11) in accordance with the following expression: Fy=Mx÷a, Fz=b×G+c, and Mx=d×G2+e×G+f, where a, b, c, d, e, and f respectively denote constants unique to a load detection target that is provided with the sensor apparatus.Type: ApplicationFiled: April 7, 2006Publication date: October 12, 2006Applicant: JTEKT CorporationInventors: Minoru Sentoku, Takeo Iino
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Patent number: 6900564Abstract: An electric power steering system is provided, which comprises a steering assist electric motor, and a reduction gear mechanism for reducing a rotation speed of a rotatable shaft of the electric motor. The reduction gear mechanism comprises a worm shaft driven by the rotatable shaft, and a worm wheel driven by the warm shaft. The electric power steering system further comprises a joint for coupling the rotatable shaft to the worm shaft for transmission of a driving force. Longitudinally biasing means is provided in association with the joint for longitudinally biasing the worm shaft.Type: GrantFiled: June 18, 2002Date of Patent: May 31, 2005Assignee: Koyo Seiko Co., Ltd.Inventors: Masanori Kobayashi, Takeo Iino, Akihiko Shiina, Katsutoshi Nishimura, Ken-ichiroh Aoto, Yoshio Itou, Masashi Uota, Shoji Shibamura, Tetsuya Murakami, Hiroyuki Shigemura
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Patent number: 6896090Abstract: In a normal state, a reaction force actuator (20) applies an operation reaction force to an steering member (2) through a planetary gear mechanism (6). When failure occurs in a steering actuator (12), the reaction force actuator (20) is turned off, and a plunger (13) locks the rotation of one element (18) which is connected to the reaction force actuator (20), in the planetary gear mechanism (6). In turn, a manual steering mode is set up in which a rotation of the steering member (2) is transmitted to a pinion gear (14) at a transmission ratio of the carrier (16) holding planetary gears (17) and a sun gear (15).Type: GrantFiled: June 18, 2003Date of Patent: May 24, 2005Assignee: Koyo Seiko Co., Ltd.Inventors: Naotake Kanda, Tomoyasu Kada, Kenji Higashi, Ryouhei Hayama, Takeo Iino, Shingo Maeda, Masayuki Ueno
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Patent number: 6782771Abstract: A steering assist system which transmits the rotation of an electric motor to a steering shaft via a worm shaft and a worm wheel meshed with a worm of the worm shaft, where an output shaft of the electric motor and the worm shaft are interconnected via a joint. The joint includes a cylindrical first transmission member mounted on the output shaft, a cylindrical second transmission member to which the worm shaft is mounted, and a cylindrical elastic body interposed between the first and second transmission members. The joint may further include a torque limiter including a spring which is interposed between an end surface of the second transmission member and a spring seat formed at an end surface of a third transmission member in opposed relation with the end surface of the second transmission member for inhibiting relative rotation between the second and third transmission members.Type: GrantFiled: January 18, 2002Date of Patent: August 31, 2004Assignee: Koyo Seiko Co., Ltd.Inventors: Kunihiro Oka, Osamu Sano, Takeo Iino, Masanori Kobayashi, Shigetaka Kinme
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Patent number: 6769507Abstract: On the outer periphery of a bearing 10 for supporting a worm 71 rotating interlocked with the rotation of a steering assist motor 6 inside the housing 8, elastic members 20 are provided to restrain the bearing 10 from moving in the radial direction thereof. The force for the restraint by the elastic members 20 is made different depending on the position in the peripheral direction thereof. A portion of the elastic member, wherein the force for restraining the movement of the bearing 10 in the radial direction is small, energizes the worm 71 to the meshing position of the worm 71 and a worm wheel 72. Another portion, wherein the force for restraining the movement is large, restrains the worm 71 from moving along the lead of the worm wheel 72. With this configuration, the elastic members 20 can reduce the amount of the backlash at the meshing portion of the worm 71 and the worm wheel 72, and can make the rotation torque applied to the meshing portion of the worm gears relatively small.Type: GrantFiled: March 4, 2003Date of Patent: August 3, 2004Assignee: Koyo Seiko Co., Ltd.Inventors: Tetsuya Murakami, Takeo Iino, Masanori Kobayashi, Akihiko Shiina, Yoshio Ito, Tatsuo Otsuka, Takayuki Todaka
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Patent number: 6763907Abstract: In a vehicle steering apparatus, a steering actuator is controlled so that the steering angle varies in accordance with the operation of an operating member. A transmission mechanism connects an operating side rotating member that is mechanically connected to the operating member and a vehicle wheel side rotating member that is mechanically connected to the vehicle wheels so that the mutual transmission of rotation is possible. Furthermore, the rotational transmission ratio between the operating side rotating member and the vehicle wheel side rotating member can be varied.Type: GrantFiled: April 14, 2003Date of Patent: July 20, 2004Assignee: Koyo Seiko Co., Ltd.Inventors: Masayuki Ueno, Katsutoshi Nishizaki, Ryouhei Hayama, Naotake Kanda, Shirou Nakano, Takeo Iino, Tomoyasu Kada, Kenji Higashi, Shingo Maeda, Shuuji Kimura, Masaya Segawa, Masayasu Higashi
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Publication number: 20040060764Abstract: In a normal state, a reaction force actuator (20) applies an operation reaction force to an steering member (2) through a planetary gear mechanism (6). When failure occurs in a steering actuator (12), the reaction force actuator (20) is turned off, and a plunger (13) locks the rotation of one element (18) which is connected to the reaction force actuator (20), in the planetary gear mechanism (6). In turn, a manual steering mode is set up in which a rotation of the steering member (2) is transmitted to a pinion gear (14) at a transmission ratio of the carrier (16) holding planetary gears (17) and a sun gear (15).Type: ApplicationFiled: June 18, 2003Publication date: April 1, 2004Applicant: Koyo Seiko Co., Ltd.Inventors: Naotake Kanda, Tomoyasu Kada, Kenji Higashi, Ryouhei Hayama, Takeo Iino, Shingo Maeda, Masayuki Ueno
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Publication number: 20030201136Abstract: In a vehicle steering apparatus, a steering actuator is controlled so that the steering angle varies in accordance with the operation of an operating member. A transmission mechanism connects an operating side rotating member that is mechanically connected to the operating member and a vehicle wheel side rotating member that is mechanically connected to the vehicle wheels so that the mutual transmission of rotation is possible. Furthermore, the rotational transmission ratio between the operating side rotating member and the vehicle wheel side rotating member can be varied.Type: ApplicationFiled: April 14, 2003Publication date: October 30, 2003Applicant: Koyo Seiko Co., Ltd.Inventors: Masayuki Ueno, Katsutoshi Nishizaki, Ryouhei Hayama, Naotake Kanda, Shirou Nakano, Takeo Iino, Tomoyasu Kada, Kenji Higashi, Shingo Maeda, Shuuji Kimura, Masaya Segawa, Masayasu Higashi
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Publication number: 20030127277Abstract: On the outer periphery of a bearing 10 for supporting a worm 71 rotating interlocked with the rotation of a steering assist motor 6 inside the housing 8, elastic members 20 are provided to restrain the bearing 10 from moving in the radial direction thereof. The force for the restraint by the elastic members 20 is made different depending on the position in the peripheral direction thereof. A portion of the elastic member, wherein the force for restraining the movement of the bearing 10 in the radial direction is small, energizes the worm 71 to the meshing position of the worm 71 and a worm wheel 72. Another portion, wherein the force for restraining the movement is large, restrains the worm 71 from moving along the lead of the worm wheel 72. With this configuration, the elastic members 20 can reduce the amount of the backlash at the meshing portion of the worm 71 and the worm wheel 72, and can make the rotation torque applied to the meshing portion of the worm gears relatively small.Type: ApplicationFiled: March 4, 2003Publication date: July 10, 2003Applicant: Koyo Seiko Co., Ltd.Inventors: Tetsuya Murakami, Takeo Iino, Masanori Kobayashi, Akihiko Shiina, Yoshio Ito, Tatsuo Otsuka, Takayuki Todaka
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Patent number: 6550567Abstract: On the outer periphery of a bearing 10 for supporting a worm 71 rotating interlocked with the rotation of a steering assist motor 6 inside the housing 8, elastic members 20 are provided to restrain the bearing 10 from moving in the radial direction thereof. The force for the restraint by the elastic members 20 is made different depending on the position in the peripheral direction thereof. A portion of the elastic member, wherein the force for restraining the movement of the bearing 10 in the radial direction is small, energizes the worm 71 to the meshing position of the worm 71 and a worm wheel 72. Another portion, wherein the force for restraining the movement is large, restrains the worm 71 from moving along the lead of the worm wheel 72. With this configuration, the elastic members 20 can reduce the amount of the backlash at the meshing portion of the worm 71 and the worm wheel 72, and can make the rotation torque applied to the meshing portion of the worm gears relatively small.Type: GrantFiled: May 10, 2001Date of Patent: April 22, 2003Assignee: Koyo Seiko Co., Ltd.Inventors: Tetsuya Murakami, Takeo Iino, Masanori Kobayashi, Akihiko Shiina, Yoshio Ito, Tatsuo Otsuka, Takayuki Todaka
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Patent number: 6547030Abstract: A positioning mechanism is provided for a moving member that moves linearly by the turning of a screw member driven by a stepping motor. A drive shaft driven to turn by the stepping motor is fitted, so that turning transmission is possible, into the screw member that screws into the moving member that is capable of moving linearly. A configuration prevents the moving member from turning together with the screw member when the screw member is turning. Origin positioning is performed, by using a stopper, by stopping the linear movement of moving member caused by driving the motor to turn in one direction. The moving member is positioned according to the turning steps of the motor in the other direction after the origin positioning. The drive shaft is fitted into the screw member via an elastic member interposed therebetween so that turning can be transmitted.Type: GrantFiled: June 20, 2001Date of Patent: April 15, 2003Assignee: Koyo Seiko Co., Ltd.Inventors: Keiji Nomura, Takehito Tomita, Akihisa Umetani, Takeo Iino
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Publication number: 20020195893Abstract: An electric power steering system is provided, which comprises a steering assist electric motor, and a reduction gear mechanism for reducing a rotation speed of a rotatable shaft of the electric motor. The reduction gear mechanism comprises a worm shaft driven by the rotatable shaft, and a worm wheel driven by the warm shaft. The electric power steering system further comprises a joint for coupling the rotatable shaft to the worm shaft for transmission of a driving force. Longitudinally biasing means is provided in association with the joint for longitudinally biasing the worm shaft.Type: ApplicationFiled: June 18, 2002Publication date: December 26, 2002Inventors: Masanori Kobayashi, Takeo Iino, Akihiko Shiina, Katsutoshi Nishimura, Ken-ichiroh Aoto, Yoshio Itou, Masashi Uota, Shoji Shibamura, Tetsuya Murakami, Hiroyuki Shigemura
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Publication number: 20020096005Abstract: In a steering assist system for providing steering assist by transmitting the rotation of an electric motor to a steering shaft via a worm shaft and a worm wheel meshed with a worm of the worm shaft, an output shaft of the electric motor and the worm shaft are inteconnected via a joint. The joint includes a cylindrical first transmission member mounted on the output shaft, a cylindrical second transmission member to which the worm shaft is mounted, and a cylindrical elastic body formed of rubber or the like and interposed between the first and second transmission members.Type: ApplicationFiled: January 18, 2002Publication date: July 25, 2002Inventors: Kunihiro Oka, Osamu Sano, Takeo Iino, Masanori Kobayashi, Shigetaka Kinme
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Publication number: 20010040067Abstract: On the outer periphery of a bearing 10 for supporting a worm 71 rotating interlocked with the rotation of a steering assist motor 6 inside the housing 8, elastic members 20 are provided to restrain the bearing 10 from moving in the radial direction thereof. The force for the restraint by the elastic members 20 is made different depending on the position in the peripheral direction thereof. A portion of the elastic member, wherein the force for restraining the movement of the bearing 10 in the radial direction is small, energizes the worm 71 to the meshing position of the worm 71 and a worm wheel 72. Another portion, wherein the force for restraining the movement is large, restrains the worm 71 from moving along the lead of the worm wheel 72. With this configuration, the elastic members 20 can reduce the amount of the backlash at the meshing portion of the worm 71 and the worm wheel 72, and can make the rotation torque applied to the meshing portion of the worm gears relatively small.Type: ApplicationFiled: May 10, 2001Publication date: November 15, 2001Applicant: KOYO SEIKO CO., LTD.Inventors: Tetsuya Murakami, Takeo Iino, Masanori Kobayashi, Akihiko Shiina, Yoshio Ito, Tatsuo Otsuka, Takayuki Todaka