Patents by Inventor Kenichi Naka

Kenichi Naka 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: 10648560
    Abstract: A lock shaft and a shaft member (a plunger and a permanent magnet) of a magnetic locking device are arranged such that a moving direction thereof is orthogonal to a moving direction of a piston rod of a hydraulic actuator. In a parking lock released state, when the coil is not energized, the lock shaft and the shaft member are locked by an attracting force between the permanent magnet and a flange of a yoke so as not to move back from the piston rod, and, when the coil is energized, the attracting force between the permanent magnet and the flange is canceled, so that the lock shaft and the shaft member are allowed to move back from the piston rod.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: May 12, 2020
    Assignee: AISIN AW CO., LTD.
    Inventors: Takahiro Kokubu, Masaya Nakai, Tomonari Okamoto, Eikichi Kidokoro, Kenichi Naka, Tadamasa Takei, Junichi Terai
  • Patent number: 10458547
    Abstract: A detent lever 20 and a piston rod 42 are engaged with each other through engagement between a recessed portion 26 of the detent lever 20 and a pin portion 52 of a retainer member 50 attached to the piston rod 42. With this configuration, the detent lever 20 and the piston rod 42 can be engaged with each other easily and in a short time when assembling a parking device 10. As a result, the time required for the work of assembling the parking device 10 can be shortened.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 29, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Masaya Nakai, Takahiro Kokubu, Tomonari Okamoto, Kazunori Ishikawa, Susumu Kato, Kenichi Naka
  • Patent number: 10071714
    Abstract: A hydraulic unit and an electromagnetic unit are disposed such that a piston rod of the hydraulic unit and a solenoid shaft of the electromagnetic unit are orthogonal to each other. The electromagnetic unit is configured such that an end surface of an expanded diameter portion of a shaft portion of the solenoid shaft on the piston rod side is pressed against an attracting portion of a yoke by the elastic force of a spring when a parking unlocked state is established by a hydraulic pressure.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: September 11, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Akihito Iwata, Tadamasa Takei, Kenichi Naka
  • Publication number: 20180172154
    Abstract: A detent lever 20 and a piston rod 42 are engaged with each other through engagement between a recessed portion 26 of the detent lever 20 and a pin portion 52 of a retainer member 50 attached to the piston rod 42. With this configuration, the detent lever 20 and the piston rod 42 can be engaged with each other easily and in a short time when assembling a parking device 10. As a result, the time required for the work of assembling the parking device 10 can be shortened.
    Type: Application
    Filed: June 17, 2016
    Publication date: June 21, 2018
    Applicant: AISIN AW CO., LTD.
    Inventors: Masaya NAKAI, Takahiro KOKUBU, Tomonari OKAMOTO, Kazunori ISHIKAWA, Susumu KATO, Kenichi NAKA
  • Patent number: 9771989
    Abstract: A hydraulic unit and an electromagnetic unit are disposed in directions that are orthogonal to each other. The electromagnetic unit is configured such that a solenoid shaft is held when a coil is energized, and such that movement of the solenoid shaft toward the right side in the drawing is allowed during movement of the piston rod when the coil is not energized. When a hydraulic pressure for a piston is reduced with the coil not energized in a parking unlocked state, switching is performed to a parking locked state with a piston rod moved downward in the drawing while moving the solenoid shaft rightward in the drawing through abutment between a roller of a pin of the piston rod and a distal end portion of the solenoid shaft.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: September 26, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Akihito Iwata, Tadamasa Takei, Kenichi Naka
  • Patent number: 9702421
    Abstract: A hydraulic unit and an electromagnetic unit are disposed in directions that are orthogonal to each other. In addition, in a parking locked state, a roller of a pin of a piston rod and a lower abutment surface of a distal end portion of a solenoid shaft are in abutment with each other. Further, when a coil is not energized, the solenoid shaft is allowed to be moved rightward in the drawing through abutment between the pin of the piston rod and the distal end portion of the solenoid shaft during movement of the piston rod.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: July 11, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Akihito Iwata, Tadamasa Takei, Kenichi Naka
  • Patent number: 9555777
    Abstract: A parking device for a vehicle has a parking rod which is movably driven from a position in which a parking gear is engaged to a position in which the engagement of the parking gear is released, a rotational lever which movably drives the parking rod, a drive device which rotationally drives the rotational lever, an elastic member which urges the rotational lever in a direction opposite from a direction in which the rotational lever is rotationally driven, and engagement device having an engaging portion in which the engaging portion is engaged with an engaged portion, in a position where the parking gear is engaged, which is provided at an end surface of the rotational lever which follows the radial direction of rotation.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: January 31, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Tadamasa Takei, Kenichi Naka, Akihito Iwata
  • Publication number: 20160208916
    Abstract: A lock shaft and a shaft member (a plunger and a permanent magnet) of a magnetic locking device are arranged such that a moving direction thereof is orthogonal to a moving direction of a piston rod of a hydraulic actuator. In a parking lock released state, when the coil is not energized, the lock shaft and the shaft member are locked by an attracting force between the permanent magnet and a flange of a yoke so as not to move back from the piston rod, and, when the coil is energized, the attracting force between the permanent magnet and the flange is canceled, so that the lock shaft and the shaft member are allowed to move back from the piston rod.
    Type: Application
    Filed: October 23, 2014
    Publication date: July 21, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Takahiro KOKUBU, Masaya NAKAI, Tomonari OKAMOTO, Eikichi KIDOKORO, Kenichi NAKA, Tadamasa TAKEI, Junichi TERAI
  • Publication number: 20160123412
    Abstract: A hydraulic unit and an electromagnetic unit are disposed in directions that are orthogonal to each other. In addition, in a parking locked state, a roller of a pin of a piston rod and a lower abutment surface of a distal end portion of a solenoid shaft are in abutment with each other. Further, when a coil is not energized, the solenoid shaft is allowed to be moved rightward in the drawing through abutment between the pin of the piston rod and the distal end portion of the solenoid shaft during movement of the piston rod.
    Type: Application
    Filed: June 17, 2014
    Publication date: May 5, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Akihito IWATA, Tadamasa TAKEI, Kenichi NAKA
  • Publication number: 20160091037
    Abstract: A hydraulic unit and an electromagnetic unit are disposed in directions that are orthogonal to each other. The electromagnetic unit is configured such that a solenoid shaft is held when a coil is energized, and such that movement of the solenoid shaft toward the right side in the drawing is allowed during movement of the piston rod when the coil is not energized. When a hydraulic pressure for a piston is reduced with the coil not energized in a parking unlocked state, switching is performed to a parking locked state with a piston rod moved downward in the drawing while moving the solenoid shaft rightward in the drawing through abutment between a roller of a pin of the piston rod and a distal end portion of the solenoid shaft.
    Type: Application
    Filed: June 17, 2014
    Publication date: March 31, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Akihito IWATA, Tadamasa TAKEI, Kenichi NAKA
  • Publication number: 20160082933
    Abstract: A hydraulic unit and an electromagnetic unit are disposed such that a piston rod of the hydraulic unit and a solenoid shaft of the electromagnetic unit are orthogonal to each other. The electromagnetic unit is configured such that an end surface of an expanded diameter portion of a shaft portion of the solenoid shaft on the piston rod side is pressed against an attracting portion of a yoke by the elastic force of a spring when a parking unlocked state is established by a hydraulic pressure.
    Type: Application
    Filed: June 17, 2014
    Publication date: March 24, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Akihito IWATA, Tadamasa TAKEI, Kenichi NAKA
  • Publication number: 20160001751
    Abstract: A parking device for a vehicle has a parking rod which is movably driven from a position in which a parking gear is engaged to a position in which the engagement of the parking gear is released, a rotational lever which movably drives the parking rod, a drive device which rotationally drives the rotational lever, an elastic member which urges the rotational lever in a direction opposite from a direction in which the rotational lever is rotationally driven, and engagement device having an engaging portion in which the engaging portion is engaged with an engaged portion, in a position where the parking gear is engaged, which is provided at an end surface of the rotational lever which follows the radial direction of rotation.
    Type: Application
    Filed: March 26, 2014
    Publication date: January 7, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Tadamasa TAKEI, Kenichi NAKA, Akihito IWATA
  • Publication number: 20090275786
    Abstract: A method for producing a glyceryl ether, including the steps of feeding a compound represented by the general formula (I): wherein R is a hydrocarbon group having 1 to 20 carbon atoms, a part or all of the hydrogen atoms of which may be substituted with a fluorine atom; OA, which may be identical or different, is an oxyalkylene group having 2 to 4 carbon atoms; and p is the number of from 0 to 20, and water to a reactor, and subjecting the compound to a hydrolytic reaction under conditions that water is in a subcritical state or a supercritical state; and wherein the method includes the step of (1) collecting water from a reaction mixture after the hydrolytic reaction, adjusting a pH of the water to 3.5 or more, and feeding the collected water to the reactor; or (2) subjecting water collected from a reaction mixture after the hydrolytic reaction to a filtration treatment with a reverse osmosis membrane, and feeding the resulting treated water as a recycled water to the reactor.
    Type: Application
    Filed: March 31, 2006
    Publication date: November 5, 2009
    Applicant: Kao Corporation
    Inventors: Takeshi Shirasawa, Kenichi Naka, Akira Saito
  • Publication number: 20090131725
    Abstract: In a method for producing a hydrolysate in which an organic compound and water are mixed and a hydrolysis reaction of the organic compound is performed, shear flow of the organic compound and the water at a shear rate U/Dmin of 5.5 sec?1 or more (where Dmin is a flow channel minimum inner diameter (mm) in a mixing section and U is a flow rate (mm/sec) of a mixture of the organic compound and the water in the mixing section), thereby mixing the organic compound and the water, and the hydrolysis reaction of the organic compound is performed at a reaction temperature of 150° C. to 350° C. and a reaction pressure equal to or higher than a saturation vapor pressure of the water.
    Type: Application
    Filed: August 21, 2006
    Publication date: May 21, 2009
    Applicant: KAO CORPORATION
    Inventor: Kenichi Naka
  • Patent number: 4827251
    Abstract: A display control system with a control of background luminance or color data applicable for a personal computer with a paper-white type display device includes a character video signal generation unit, a background luminance setting register, a video enable signal generation unit, a video signal priority unit, and a video signal synthesis unit. A first video enable signal from the video enable signal generation unit controls the supply of the video signals to the video signal priority unit. A second video enable signal from the video enable signal generation unit controls a display of background in a background luminance tone or color designated by the background luminance setting register for an intermediate range when the character video signal is absent.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: May 2, 1989
    Assignee: Panafacom Limited
    Inventors: Hiroshi Aoki, Kenichi Naka