Patents by Inventor Kazumasa Tsukamoto

Kazumasa Tsukamoto 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).

  • Patent number: 8590683
    Abstract: A drive plate that has a ring gear capable of meshing with a gear of a motor, and that transmits power from the engine to an element to which the power is to be transmitted. The drive plate includes a plate member that is fixed to a crankshaft of the engine. A ring gear member is formed as an annular member having the ring gear in its outer periphery. A plurality of fastening portions are each fastened to the plate member on an inner peripheral side with respect to the ring gear. A plurality of extended weld portions each extend from the inner peripheral side with respect to the ring gear to a side of the element, each having a free end that is welded to an outer periphery of a constituent member of the element to which the power is to be transmitted.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: November 26, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Kazumasa Tsukamoto, Takamitsu Kuroyanagi, Takuya Inagaki, Sachio Honjo, Takenori Kanou
  • Publication number: 20120061199
    Abstract: A drive plate that has a ring gear capable of meshing with a gear of a motor, and that transmits power from the engine to an element to which the power is to be transmitted. The drive plate includes a plate member that is fixed to a crankshaft of the engine. A ring gear member is formed as an annular member having the ring gear in its outer periphery. A plurality of fastening portions are each fastened to the plate member on an inner peripheral side with respect to the ring gear. A plurality of extended weld portions each extend from the inner peripheral side with respect to the ring gear to a side of the element, each having a free end that is welded to an outer periphery of a constituent member of the element to which the power is to be transmitted.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 15, 2012
    Applicant: AISIN AW CO., LTD.
    Inventors: Kazumasa TSUKAMOTO, Takamitsu KUROYANAGI, Takuya INAGAKI, Sachio HONJO, Takenori KANOU
  • Patent number: 8100809
    Abstract: A first element of a duplex planetary gear set is selectively coupled to an input shaft via a third clutch, or is selectively fixed via a first brake. A second element is selectively coupled, via a second clutch, to an intermediate shaft that is directly coupled to a speed-increasing element of a simplex planetary gear set which increases the rotational speed of the input shaft, or is selectively fixed via a second brake. A third element is directly coupled to an output shaft. A fourth element is selectively coupled to the input shaft via a first clutch. Therefore, by increasing the speed of the rotation of the input shaft by the simplex planetary gear set and transferring it to the duplex planetary gear set, it is possible to reduce the torques on individual components of an automatic transmission and therefore to reduce the sizes of the individual components and the capacities of the individual friction engagement elements.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: January 24, 2012
    Assignee: Aisin AW Co., Ltd.
    Inventors: Takao Taniguchi, Kazumasa Tsukamoto, Masahiro Hayabuchi, Akitoshi Katou, Satoru Kasuya, Naoji Katou, Hiroshi Katou, Masashi Kitou, Hiroaki Sanji, Naoki Takabayashi
  • Patent number: 7731627
    Abstract: A vehicle parking control system includes a shift-by-wire apparatus that is operated based on an electric range position signal corresponding to one of the driving range and the non-driving range of the drive unit and that switches the lock mechanism to an engaged state and a released state in conjunction with a switching of one of the driving range and the non-driving range of the drive unit; a vehicle parking brake unit that is operated based on the range position signal and that switches a brake unit, which is provided to stop a rotation of the rotating member of the vehicle, between a braking state and a released state; and a control unit that operates the shift-by-wire apparatus and the vehicle parking brake unit based on the range position signal.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: June 8, 2010
    Assignee: Aisin AW Co., Ltd.
    Inventors: Katsutoshi Shimizu, Kazuo Takemoto, Kazumasa Tsukamoto, Kazuhisa Ozaki, Saijiro Tanaka
  • Patent number: 7721624
    Abstract: An automatic transmission that includes a case; and a range shift device that includes: a housing with an opening portion on one side, a motor that produces a driving force based on a signal from a manually operated shift operating device, and a mechanical transmission that transmits the driving force of the motor to a manual valve, wherein the range shift device shifts a running range in accordance with a shift position of the manual valve, and the case has a joining portion that closes the opening portion of the housing.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: May 25, 2010
    Assignee: Aisin AW Co., Ltd.
    Inventors: Michimasa Tanaka, Kazumichi Kayama, Takeo Arai, Kazumasa Tsukamoto, Kazuhisa Ozaki
  • Patent number: 7650973
    Abstract: A hydraulic power transmission device includes a toroid portion, a turbine hub, and a lock-up device. The toroid portion includes a pump impeller and a turbine runner. The turbine hub is engaged with an input shaft of a transmission and holds the turbine runner. The lock-up device is installed so that it engages and disengages freely and it mechanically transmits to the turbine hub rotation that is transmitted from a drive power source. The toroid portion and the lock-up device overlap in the axial direction. Because the toroid portion and the lock-up device overlap in the axial direction, the size of the hydraulic power transmission device in the axial direction can be reduced, and the hydraulic power transmission device can be made more compact.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: January 26, 2010
    Assignee: Aisin AW Co., Ltd.
    Inventors: Kazumasa Tsukamoto, Kazuhisa Ozaki, Takeshi Inuzuka, Mitsugu Yamashita, Atsuhiro Mase
  • Publication number: 20090264237
    Abstract: A first element of a duplex planetary gear set is selectively coupled to an input shaft via a third clutch, or is selectively fixed via a first brake. A second element is selectively coupled, via a second clutch, to an intermediate shaft that is directly coupled to a speed-increasing element of a simplex planetary gear set which increases the rotational speed of the input shaft, or is selectively fixed via a second brake. A third element is directly coupled to an output shaft. A fourth element is selectively coupled to the input shaft via a first clutch. Therefore, by increasing the speed of the rotation of the input shaft by the simplex planetary gear set and transferring it to the duplex planetary gear set, it is possible to reduce the torques on individual components of an automatic transmission and therefore to reduce the sizes of the individual components and the capacities of the individual friction engagement elements.
    Type: Application
    Filed: November 29, 2005
    Publication date: October 22, 2009
    Applicant: AISIN AW CO., LTD.
    Inventors: Takao Taniguchi, Kazumasa Tsukamoto, Masahiro Hayabuchi, Akitoshi Katou, Satoru Kasuya, Naoji Katou, Hiroshi Katou, Masashi Kitou, Hiroaki Sanji, Naoki Takabayashi
  • Publication number: 20070281827
    Abstract: A vehicle parking control system includes a shift-by-wire apparatus that is operated based on an electric range position signal corresponding to one of the driving range and the non-driving range of the drive unit and that switches the lock mechanism to an engaged state and a released state in conjunction with a switching of one of the driving range and the non-driving range of the drive unit; a vehicle parking brake unit that is operated based on the range position signal and that switches a brake unit, which is provided to stop a rotation of the rotating member of the vehicle, between a braking state and a released state; and a control unit that operates the shift-by-wire apparatus and the vehicle parking brake unit based on the range position signal.
    Type: Application
    Filed: March 21, 2007
    Publication date: December 6, 2007
    Applicant: AISIN AW CO., LTD.
    Inventors: Katsutoshi Shimizu, Kazuo Takemoto, Kazumasa Tsukamoto, Kazuhisa Ozaki, Saijiro Tanaka
  • Patent number: 7255186
    Abstract: An output of an internal combustion engine is transmitted to an output shaft by controlling a control motor to change a rotation speed output from the engine without speed steps via power distribution planetary gear. An output of a drive motor is input to the output shaft by changing the speed into two-step decelerated rotation by means of an automatic transmission. The transmission produces a desired torque by decelerating the speed by a large degree when a vehicle speed is low, and produces a desired number of revolutions by decelerating the speed by a small degree when the vehicle speed is high.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: August 14, 2007
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoru Wakuta, Kenji Omote, Takeshi Inuzuka, Kazuhisa Ozaki, Kazumasa Tsukamoto, Kozo Yamaguchi, Masatoshi Adachi, Kazutoshi Motoike, Masahiro Kojima
  • Publication number: 20070129199
    Abstract: An automatic transmission that includes a case; and a range shift device that includes: a housing with an opening portion on one side, a motor that produces a driving force based on a signal from a manually operated shift operating device, and a mechanical transmission that transmits the driving force of the motor to a manual valve, wherein the range shift device shifts a running range in accordance with a shift position of the manual valve, and the case has a joining portion that closes the opening portion of the housing.
    Type: Application
    Filed: September 27, 2006
    Publication date: June 7, 2007
    Applicant: AISIN AW CO., LTD.
    Inventors: Michimasa Tanaka, Kazumichi Kayama, Takeo Arai, Kazumasa Tsukamoto, Kazuhisa Ozaki
  • Patent number: 7174978
    Abstract: A hybrid drive unit including a first motor, a first planetary gear and a second motor, wherein the first planetary gear distributes and transmits a drive force transmitted from an input shaft to the first motor and an output shaft, a power output from the output shaft and the second motor are synthesized and the first motor and the first planetary gear are housed in a transmission case with the second motor spaced from the transmission case.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: February 13, 2007
    Assignee: Aisin AW Co., Ltd.
    Inventors: Takao Taniguchi, Kazumasa Tsukamoto, Kozo Yamaguchi, Kazuhisa Ozaki, Takeshi Inuzuka, Satoru Wakuta
  • Publication number: 20070007095
    Abstract: A hydraulic power transmission device includes a toroid portion, a turbine hub, and a lock-up device. The toroid portion includes a pump impeller and a turbine runner. The turbine hub is engaged with an input shaft of a transmission and holds the turbine runner. The lock-up device is installed so that it engages and disengages freely and it mechanically transmits to the turbine hub rotation that is transmitted from a drive power source. The toroid portion and the lock-up device overlap in the axial direction. Because the toroid portion and the lock-up device overlap in the axial direction, the size of the hydraulic power transmission device in the axial direction can be reduced, and the hydraulic power transmission device can be made more compact.
    Type: Application
    Filed: June 23, 2006
    Publication date: January 11, 2007
    Applicant: Aisin AW Co., Ltd.
    Inventors: Kazumasa Tsukamoto, Kazuhisa Ozaki, Takeshi Inuzuka, Mitsugu Yamashita, Atsuhiro Mase
  • Patent number: 7075441
    Abstract: A state where a seal is stuck to an article is detected, and an unauthorized takeout is prevented. A stuck state detection seal comprises a sealing base member to be stuck to the article N and a sealing surface member to be stuck to the sealing base member overlapped thereon. Between the sealing members, there are provided stuck state detection means for detecting a stuck state between the two and an RF unit that transmits a detected stuck state signal and transmits/receives a takeout state signal of the article N. In the store are provided passage reception antennas for receiving the stuck state signal transmitted from the RF unit, gate reception antennas for receiving reading state signal transmitted from a bar code reader through the RF unit, and a store control unit for judging whether the takeout of the article N be permitted based on the reading state signal.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: July 11, 2006
    Assignees: Kazumasa Tsukamoto, Crownt Corporation
    Inventor: Kazumasa Tsukamoto
  • Patent number: 7052433
    Abstract: A reduced rotation output unit for outputting a reduced rotation obtained by reducing rotation of an input shaft is arranged at one side of a planetary gear unit in an axial direction, a first clutch and a second clutch interposed between a second rotation element of the planetary gear unit, and a third rotation element and the input shaft are arranged at the other side of the planetary gear unit in the axial direction, and an output member is arranged between the first clutch, the second clutch and the planetary gear unit. Accordingly, it is possible to position the reduced rotation output unit and the planetary gear unit close to each other, and it is possible to make a transmission member that transmits the reduced rotation output from the reduced rotation output unit to the planetary gear unit short.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: May 30, 2006
    Assignee: Aisin AW Co., Ltd.
    Inventors: Nobutada Sugiura, Takeo Arai, Kazuhisa Ozaki, Kazumasa Tsukamoto, Kazumichi Kayama, Tomochika Inagaki
  • Patent number: 6935450
    Abstract: A motor/generator is arranged radially outward of a middle portion of a front cover of a torque converter so that at least a part of the motor/generator axially overlaps the torque converter, with a predetermined gap (C) between the front cover and the rotor of the motor/generator. The rotor of the motor/generator is supported by either the torque converter or an engine crankshaft or by any two of the torque converter, a motor housing and the crankshaft. The rotor is not affected by the torque converter and the efficiency of the motor is not reduced.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: August 30, 2005
    Assignee: Aisin Aw Co., Ltd.
    Inventors: Shigeo Tsuzuki, Takeshi Inuzuka, Satoru Wakuta, Takahiro Kido, Takao Taniguchi, Kazumasa Tsukamoto, Kenji Omote
  • Publication number: 20050173026
    Abstract: A carburizing and hardening method enhances strength while sufficiently reducing hardening strain, without increasing the production cost, and a carburized and hardened member produced thereby. The raw material is an alloy steel which contains Fe as a main component, 0.10 to 0.50 wt. % C and 0.50 to 1.50 wt. % Si and having a hardenability J, based on an end quenching test, in a range of 35 to 50 (at 12.5 mm). After the raw material is formed into the desired shape, a carburized layer is formed by carburizing in an oxidation inhibiting atmosphere. After the carburizing, quenching is performed with cooling, uninterrupted by temperature rise, from a pearlite transformation point (A1 point) to a martensite transformation start point (Ms point), and with a severity of quenching H in a range of 0.01 to 0.08 (cm?1).
    Type: Application
    Filed: December 25, 2002
    Publication date: August 11, 2005
    Inventors: Takao Taniguchi, Kazumasa Tsukamoto, Kouji Ohbayashi, Tomoki Hanyuda, Yutaka Kurebayashi, Hideo Kanisawa, Seiji Itoh
  • Publication number: 20040246133
    Abstract: A state where a seal is stuck to an article is detected, and an unauthorized takeout is prevented. A stuck state detection seal comprises a sealing base member to be stuck to the article N and a sealing surface member to be stuck to the sealing base member overlapped thereon. Between the sealing members, there are provided stuck state detection means for detecting a stuck state between the two and an RF unit that transmits a detected stuck state signal and transmits/receives a takeout state signal of the article N. In the store are provided passage reception antennas for receiving the stuck state signal transmitted from the RF unit, gate reception antennas for receiving reading state signal transmitted from a bar code reader through the RF unit, and a store control unit for judging whether the takeout of the article N be permitted based on the reading state signal.
    Type: Application
    Filed: February 18, 2004
    Publication date: December 9, 2004
    Applicants: Kazumasa Tsukamoto, Crownt Corporation
    Inventor: Kazumasa Tsukamoto
  • Publication number: 20040248684
    Abstract: A reduced rotation output unit for outputting a reduced rotation obtained by reducing rotation of an input shaft is arranged at one side of a planetary gear unit in an axial direction, a first clutch and a second clutch are interposed between a second rotation element of the planetary gear unit, and a third rotation element and the input shaft are arranged at the other side of the planetary gear unit in the axial direction, and an output member is arranged between the first clutch, the second clutch and the planetary gear unit. Accordingly, it is possible to position the reduced rotation output unit and the planetary gear unit close to each other, and it is possible to make a transmission member, that transmits the reduced rotation output from the reduced rotation output unit to the planetary gear unit, short.
    Type: Application
    Filed: February 17, 2004
    Publication date: December 9, 2004
    Inventors: Nobutada Sugiura, Takeo Arai, Kazuhisa Ozaki, Kazumasa Tsukamoto, Kazumichi Kayama, Tomochika Inagaki
  • Publication number: 20040084233
    Abstract: An output of an internal combustion engine is transmitted to an output shaft by controlling a control motor to change a speed without speed steps, in a power distribution planetary gear. An output of a drive motor is input to the output shaft by changing the speed into two-step decelerated rotation by means of an automatic transmission. The transmission produces a desired torque by decelerating the speed by a large degree when a vehicle speed is low, and produces a desired number of revolutions by decelerating the speed by a small degree when the vehicle speed is high.
    Type: Application
    Filed: July 30, 2003
    Publication date: May 6, 2004
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoru Wakuta, Kenji Omote, Takeshi Inuzuka, Kazuhisa Ozaki, Kazumasa Tsukamoto, Kozo Yamaguchi, Masatoshi Adachi, Kazutoshi Motoike, Masahiro Kojima
  • Publication number: 20040011576
    Abstract: A hybrid drive unit including a first motor, a first planetary gear and a second motor, wherein the first planetary gear distributes and transmits a drive force transmitted from an input shaft to the first motor and an output shaft, a power output from the output shaft and the second motor are synthesized and the first motor and the first planetary gear are housed in a transmission case with the second motor spaced from the transmission case.
    Type: Application
    Filed: March 27, 2003
    Publication date: January 22, 2004
    Applicant: AISIN AW CO., LTD.
    Inventors: Takao Taniguchi, Kazumasa Tsukamoto, Kozo Yamaguchi, Kazuhisa Ozaki, Takeshi Inuzuka, Satoru Wakuta