Patents by Inventor Katsuyuki Sakai

Katsuyuki Sakai 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: 10630120
    Abstract: An axial-air-gap motor integrally configured by resin molding, a plurality of stator cores being arranged in an annular configuration, wherein the resin is spread in an efficient manner. An axial-air-gap motor, provided with: a plurality of stator cores, a stator, and one or more rotors. The stator cores are provided with a teeth iron core having the shape of an approximate trapezoidal cylinder, a bobbin covering at least the vicinity of both end parts of the outer periphery of the teeth iron core, flange parts provided in the vicinity of the portions of the bobbin that cover the both end parts of the outer periphery of the teeth iron core so as to extend for a predetermined length in a direction perpendicular to the outer periphery of the teeth iron core, and at least one protrusion further extending from the tip of the flange part in the direction of extension.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 21, 2020
    Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    Inventors: Toru Sakai, Katsuyuki Yamazaki
  • Publication number: 20200043687
    Abstract: An electromagnetic relay including a housing, a cover, an adhesive which is interposed between a side part of the housing and an inner surface of the cover and which secures the housing and the cover, and a projection which is formed in at least one of the side part and the inner surface. The adhesive is filled in a gap between the side part and the inner surface.
    Type: Application
    Filed: July 22, 2019
    Publication date: February 6, 2020
    Inventors: Koyuru Kobayashi, Kazuaki Miyanaga, Katsuyuki Takahashi, Masahide Mochizuki, Shigeki Nakayama, Natsumi Sakai, Hiroaki Kohinata, Daishi Kitajima, Satoshi Matsumoto
  • Patent number: 10530210
    Abstract: To ensure ready assembly of a stator and reliably reduce the shaft voltage in an axial air gap rotating electric machine, an axial air gap rotating electric machine has a circular ring-shaped stator formed by a plurality of stator cores arranged about a rotational axis direction in a ring shape. Each stator core comprises a tubular bobbin and a coil, with the tubular bobbin having an iron core inserted into a bobbin inner tubular portion substantially matching the peripheral shape of the iron core. The axial air gap rotating electric machine has a first conductive member having a horizontal portion and a vertical portion contacting the end surface of the bobbin opening portion. The horizontal portion contacts parts of the iron core outer peripheral surface and the inner peripheral surface of the bobbin inner tubular portion, and the vertical portion is conductively connected to the inner circumferential housing surface.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: January 7, 2020
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Hirooki Tokoi, Shuuichi Takahashi, Yasuei Yoneoka, Toshifumi Suzuki, Toru Sakai, Katsuyuki Yamazaki, Ryousou Masaki, Norihisa Iwasaki, Yuji Enomoto
  • Patent number: 10523100
    Abstract: The present invention provides an axial air-gap rotary electric machine with which it is possible to achieve downsizing and increased output as well as an improvement in the support strength of a molded resin and housing and a reduction in the manufacturing cost of the housing. Provided is an axial air-gap rotary electric machine having: a stator in which a plurality of core members, which have at least an iron core and a coil, are arranged in a circular shape centered around a rotating shaft and curved around the inner peripheral surface of a housing; and a rotor that faces an end surface of the iron core with a prescribed air gap therebetween in the radial direction of the rotating shaft. Therein, the housing has, in the surface facing the stator, a hole that communicates with the outside, and the stator has a resin molded portion formed by filling a resin into at least the surface of the core members facing the inner peripheral surface of the housing, and into the hole, and molding integrally.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: December 31, 2019
    Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    Inventors: Hirooki Tokoi, Shuuichi Takahashi, Yasuei Yoneoka, Shinya Yamaji, Toshifumi Suzuki, Katsuyuki Yamazaki, Toru Sakai, Ryousou Masaki
  • Patent number: 10454325
    Abstract: The present invention ensures reliability while reducing the size of an axial air gap rotating electric machine. An axial air gap rotating electric machine has: a stator comprising a plurality of core members arranged in a ring shape, said core members each having an iron core, a coil wound in an iron core outer periphery direction, and a bobbin disposed between the iron core and the coil; and a rotor plane-facing an end surface of the iron core via an air gap in a rotating shaft radial direction.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: October 22, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shuuichi Takahashi, Hirooki Tokoi, Toru Sakai, Katsuyuki Yamazaki, Toshifumi Suzuki, Jun Sakurai, Tomonori Kawagoe, Daisaku Takahashi
  • Publication number: 20190245418
    Abstract: This axial gap-type rotary electrical machine has: a stator in which a plurality of core units each configured from a core, a coil, and a bobbin are disposed, centered around a rotating shaft, in an annular shape along the inner circumferential surface of a housing; and a rotor that is face-to-face with a cross-sectional surface of the core through a predetermined gap in a radial direction of the rotating shaft. The bobbin is formed in a cylindrical shape, has flange parts extending a predetermined amount in the outer circumferential direction at the top and bottom of the cylindrical shape, is provided with notch sections on the tip part in the inner circumferential direction of the flange part of the bobbin, and forms an acute angle. In addition, approximately circular notch sections are formed on adjacent side surface portions of the bobbin in the outer circumferential direction of the bobbin.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 8, 2019
    Inventors: Shuuichi TAKAHASHI, Yasuei YONEOKA, Toshifumi SUZUKI, Toru SAKAI, Katsuyuki YAMAZAKI, Daisaku TAKAHASHI, Daisuke KURAI, Jun SAKURAI
  • Publication number: 20190226690
    Abstract: An outdoor unit includes a heat exchanger, a blower fan, an electronic board on which a heat-generating element is mounted, a housing, and a heatsink. The housing includes a partition plate partitioning the inside of the housing into a heat exchanger chamber in which the heat exchanger and the blower fan are placed and a machine chamber in which the electronic board and a compressor are placed, and a portion of the partition plate has an opening. The heatsink includes a main plate placed to cover the opening from the heat-exchanger-room-side of the partition plate and heat-releasing fins projecting from the main plate to the blower fan side, and a portion of the main plate comes into contact with the heat-generating element via the opening. The greater the amounts of heat transferred from the heat-generating element the heat-releasing fins, the larger the heat-releasing fins.
    Type: Application
    Filed: September 26, 2017
    Publication date: July 25, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naoki TORII, Yohei Kato, Yoshiyuki SAKAI, Katsuyuki YAMAMOTO
  • Patent number: 9550499
    Abstract: A work vehicle includes: a first control system that controls a traveling of a work vehicle; a second control system that controls the traveling of the work vehicle via the first control system by using set information; a first communication line used for communication between the first control system and the second control system; and a second communication line that transmits information to the first control system from the second control system, wherein the second control system generates information for controlling an engine of the work vehicle and information for controlling a brake device of the work vehicle, and transmits the information for controlling the engine and the information for controlling the brake device to the first control system via the second communication line by an information transmission system different from an information transmission system by the first communication line.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: January 24, 2017
    Assignee: Komatsu Ltd.
    Inventor: Katsuyuki Sakai
  • Patent number: 9513633
    Abstract: The present invention provides a work vehicle including a control system that can switch between a first driving mode for allowing the work vehicle to travel in a manned state and a second driving mode for allowing the work vehicle to travel in an unmanned state, wherein the control system controls such that, during an execution of the second driving mode, a number of types of information exchanged by communication in the control system becomes less than that during the first driving mode, or a communication interval of information exchanged by the communication in the control system becomes longer than that during the first driving mode.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 6, 2016
    Assignee: Komatsu Ltd.
    Inventor: Katsuyuki Sakai
  • Publication number: 20160033968
    Abstract: The present invention provides a work vehicle including a control system that can switch between a first driving mode for allowing the work vehicle to travel in a manned state and a second driving mode for allowing the work vehicle to travel in an unmanned state, wherein the control system controls such that, during an execution of the second driving mode, a number of types of information exchanged by communication in the control system becomes less than that during the first driving mode, or a communication interval of information exchanged by the communication in the control system becomes longer than that during the first driving mode.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 4, 2016
    Inventor: Katsuyuki Sakai
  • Publication number: 20160031448
    Abstract: A work vehicle includes: a first control system that controls a traveling of a work vehicle; a second control system that controls the traveling of the work vehicle via the first control system by using set information; a first communication line used for communication between the first control system and the second control system; and a second communication line that transmits information to the first control system from the second control system, wherein the second control system generates information for controlling an engine of the work vehicle and information for controlling a brake device of the work vehicle, and transmits the information for controlling the engine and the information for controlling the brake device to the first control system via the second communication line by an information transmission system different from an information transmission system by the first communication line.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 4, 2016
    Applicant: KOMATSU LTD.
    Inventor: Katsuyuki SAKAI
  • Patent number: 7497462
    Abstract: An occupant protection system, which can easily be mounted to a seat, includes a seat pan placed between the front parts of the side frames of a seat, an airbag arranged above the seat pan, and a gas generator for inflating the airbag. The airbag extends along the width direction of the seat pan, opposite ends of the airbag being connected to the seat pan through anchors. The gas generator is arranged on the upper surface of the seat pan and is fixed to the seat pan with a bracket. The gas generator is connected to the airbag via a pipe.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: March 3, 2009
    Assignee: Takata Corporation
    Inventors: Katsuyuki Sakai, Keiichiro Nojiri
  • Patent number: 7306257
    Abstract: An occupant protection system in which an airbag module can easily be mounted to a seat is provided. A retainer is placed on the inner surface of the lower part of an airbag. Stud bolts projecting downward from the lower surface of the retainer are passed through bolt insertion holes of the airbag, to which first nuts are tightened from the exterior of the airbag through a patch; thus, the airbag is joined to the retainer. A gas generator is joined to the retainer with a bracket. A seat pan has a recess for accommodating the patches and the first nuts when the retainer to which the airbag and the gas generator have been joined in advance is mounted thereto.
    Type: Grant
    Filed: May 10, 2004
    Date of Patent: December 11, 2007
    Assignee: Takata Corporation
    Inventors: Hiromichi Yoshikawa, Katsuyuki Sakai
  • Patent number: 7021655
    Abstract: A passenger protecting apparatus that prevents a submarine phenomenon of the passenger by the use of an air belt that is configured to inflate to form a sleeve wall. The apparatus includes a seat cushion that includes a seat pad, and an air belt disposed under the seat pad. The apparatus includes a buckle and a lap anchor. The rear end on the right and the left of the air belt are connected to the buckle and the lap anchor via a wire respectively. Upon collision, the air belt is inflated and the front portion of the seat pad is pushed up so that a submarine phenomenon is prevented and the buckle and the lap anchor are pulled down.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: April 4, 2006
    Assignee: Takata Corporation
    Inventors: Ryoji Saiguchi, Hiroaki Fujii, Masahiro Higuchi, Katsuyuki Sakai, Ichizo Kobayashi
  • Publication number: 20060017266
    Abstract: The present invention relates to a passenger protecting device for protecting a passenger in a seat in a vehicle in the event of a collision, and particularly relates to a passenger protecting device having a configuration for restraining the waist of the passenger in a frontal collision so as to prevent forward and backward movement of the body of the passenger. The passenger protecting device may include a bag disposed underneath the front portion of a seat cushion, a gas generator for inflating the bag, a bag envelope disposed so as to surround the bag, and a cover.
    Type: Application
    Filed: July 22, 2005
    Publication date: January 26, 2006
    Inventors: Hiromichi Yoshikawa, Katsuyuki Sakai, Yasuo Itoga
  • Patent number: 6935684
    Abstract: To provide an occupant protecting device in which a bag placed at the front of a seat cushion is inflated to locally and sufficiently push up or sufficiently harden the front of the seat cushion in order to prevent the forward movement of the waist of an occupant. An inflatable tube is placed under the front of a cushion pad. Gas is introduced from an inflator into the tube. A cover is provided to overlie the tube. The cover is pushed up when the tube is inflated. The cover tapers toward the top.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: August 30, 2005
    Assignee: Takata Corporation
    Inventor: Katsuyuki Sakai
  • Patent number: 6905134
    Abstract: A passenger protecting apparatus that includes an air belt configured to inflate along a back surface of a seat back to provide protection to the lower body a passenger sitting behind the seat. The apparatus includes a buckle and a lap anchor. The rear end on the right and the left of the air belt are connected to the buckle and the lap anchor via a wire respectively. Upon collision, the air belt is inflated and the buckle and the lap anchor are pulled down to thereby pretension the seat belt.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: June 14, 2005
    Assignee: Takata Corporation
    Inventors: Ryoji Saiguchi, Hiroaki Fujii, Masahiro Higuchi, Katsuyuki Sakai, Ichizo Kobayashi
  • Publication number: 20050104341
    Abstract: An occupant protecting device includes a bag disposed on the upper side of the seat pan and being inflatable so as to press the front portion of the seat cushion from the lower side; and a gas generator for inflating the bag. The bag extends laterally widthwise of the seat pan, and the left and right ends of the bag are preferably connected to a seat pan respectively. The bag is arranged in such a manner that the swagging amount of the hip of the occupant into the seat cushion does not exceed 60 mm when the hip of the occupant is swagged into the seat cushion in a state in which the bag is inflated at the time of front collision of the vehicle and the front portion of the seat cushion is pressed from the lower side.
    Type: Application
    Filed: November 3, 2004
    Publication date: May 19, 2005
    Inventor: Katsuyuki Sakai
  • Publication number: 20050067209
    Abstract: A passenger protecting device includes an inflatable bag configured to be disposed underneath a front portion of a seat cushion. The device also includes a cover overlying the bag in a position between the bag and the seat cushion; wherein the cover is configured to be deformed by the inflating bag. The middle portion of the bag may be surrounded by an envelope.
    Type: Application
    Filed: July 2, 2004
    Publication date: March 31, 2005
    Inventors: Hiromichi Yoshikawa, Katsuyuki Sakai
  • Patent number: 6863298
    Abstract: An occupant protecting device which makes it possible to inflate a bag of an inflatable seatbelt device or exerting a pre-tension upon a seatbelt by a gas generator for inflating a bag disposed at the front portion of a seat cushion. An occupant protecting device including an inflatable tube disposed under the front portion of a cushion pad. Gas from an inflator enters the tube through a cylinder. A piston is disposed inside the cylinder, and is connected to a lap anchor through a wire. A structure which causes a bag to be inflated by the gas from the inflator may also be used.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: March 8, 2005
    Assignee: Takata Corporation
    Inventors: Katsuyuki Sakai, Kazuhiro Abe