Patents by Inventor Hidemasa Hirakui

Hidemasa Hirakui 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: 11021083
    Abstract: A seat lock device includes: a hook member; and a cam plate. The hook member includes: a hook inclined edge surface and is rotationally biased by contact with a striker entering; an engaging groove into which the striker entering fits after crossing the hook inclined edge surface to bring the hook member into a locked position; a restraining pin; and an interlock pin, the cam plate is set to a limiting position when the hook member engages with the striker and is switched to an allowing position when the striker enters and when an operation performed to release an engagement of the striker, and the cam plate includes: a cam surface that contacts with the restraining pin to rotationally bias the hook member; and an interlock surface with which the interlock pin contacts when the hook member has turned from the locked position.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: June 1, 2021
    Assignee: MITSUI KINZOKU ACT CORPORATION
    Inventors: Katsunori Noguchi, Makoto Kondo, Hidemasa Hirakui, Junichi Shimada
  • Publication number: 20210023967
    Abstract: A seat lock device includes: a hook member; and a cam plate. The hook member includes: a hook inclined edge surface and is rotationally biased by contact with a striker entering; an engaging groove into which the striker entering fits after crossing the hook inclined edge surface to bring the hook member into a locked position; a restraining pin; and an interlock pin, the cam plate is set to a limiting position when the hook member engages with the striker and is switched to an allowing position when the striker enters and when an operation performed to release an engagement of the striker, and the cam plate includes: a cam surface that contacts with the restraining pin to rotationally bias the hook member; and an interlock surface with which the interlock pin contacts when the hook member has turned from the locked position.
    Type: Application
    Filed: May 30, 2017
    Publication date: January 28, 2021
    Inventors: Katsunori NOGUCHI, Makoto KONDO, Hidemasa HIRAKUI, Junichi SHIMADA
  • Patent number: 10214124
    Abstract: A seat lock apparatus includes: a hook member configured to be rotationally biased elastically in a positive direction; an interlocking unit configured to restrict rotation of the hook member in a negative direction; and a cover member configured to cover an operation range of the hook member at one side of the hook member, the cover member including a striker entrance groove that a striker enters. The hook member includes an engagement groove. The engagement groove has both end portions at a side of an opening of the engagement groove, each end portion being beyond the striker entrance groove to overlap the cover member as viewed along a shaft direction of the hook member when the hook member is at a position of being restricted from operating by the interlocking unit.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 26, 2019
    Assignee: Mitsui Kinzoku Act Corporation
    Inventors: Katsunori Noguchi, Makoto Kondo, Hidemasa Hirakui, Junichi Shimada
  • Publication number: 20180345829
    Abstract: A seat lock apparatus includes: a hook member configured to be rotationally biased elastically in a positive direction; an interlocking unit configured to restrict rotation of the hook member in a negative direction; and a cover member configured to cover an operation range of the hook member at one side of the hook member, the cover member including a striker entrance groove that a striker enters. The hook member includes an engagement groove. The engagement groove has both end portions at a side of an opening of the engagement groove, each end portion being beyond the striker entrance groove to overlap the cover member as viewed along a shaft direction of the hook member when the hook member is at a position of being restricted from operating by the interlocking unit.
    Type: Application
    Filed: March 28, 2018
    Publication date: December 6, 2018
    Inventors: Katsunori NOGUCHI, Makoto KONDO, Hidemasa HIRAKUI, Junichi SHIMADA
  • Patent number: 7774983
    Abstract: A door is pivotally secured to the back of a vehicle. A door opening device comprises a connecting rod including an upper end and a lower end. The upper end of the connecting rod is pivotally mounted to the door. The door opening device further comprises a guide member having a guide slit, a rack bar which slides up and down in the guide slit, a connecting shaft that pivotally connects the lower end of the connecting rod to an upper end of the rack bar and a driving unit for opening and closing the door via the connecting rod. The lower end of the connecting rod is pivotally coupled to the upper end of the rack bar.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: August 17, 2010
    Assignee: Mitsui Mining and Smelting Co., Ltd.
    Inventors: Ryoji Shimura, Hidemasa Hirakui
  • Publication number: 20070245632
    Abstract: A door is pivotally secured to the back of a vehicle to open and close with a hinge shaft. A door opening device comprises a connecting rod including an upper end and a lower end. The upper end of the connecting rod is pivotally mounted to the door. The door opening device further comprises a guide member having a guide slit, a rack bar which slides up and down in the guide slit and a driving unit for opening and closing the door via the connecting rod. The lower end of the connecting rod is pivotally coupled to the upper end of the rack bar.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 25, 2007
    Inventors: Ryoji SHIMURA, Hidemasa HIRAKUI
  • Patent number: 6776443
    Abstract: A rack includes a closed position teeth portion meshed with a teeth portion of an output gear when the rack is disposed at a closed position corresponding to a closed position of an opening and closing member and an opened position teeth portion meshed with the teeth portion of the output gear when the rack is disposed at an opened position corresponding to an opened position of the opening and closing member and a clearance between faces of teeth of the closed position teeth portion and the teeth portion of the output gear is made larger than a clearance between faces of teeth of the opened position teeth portion and the teeth portion of the output gear.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: August 17, 2004
    Assignees: Ohi Seisakusho Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Ryoji Shimura, Hidemasa Hirakui, Toshihisa Omori
  • Publication number: 20040104594
    Abstract: A rack includes a closed position teeth portion meshed with a teeth portion of an output gear when the rack is disposed at a closed position corresponding to a closed position of an opening and closing member and an opened position teeth portion meshed with the teeth portion of the output gear when the rack is disposed at an opened position corresponding to an opened position of the opening and closing member and a clearance between faces of teeth of the closed position teeth portion and the teeth portion of the output gear is made larger than a clearance between faces of teeth of the opened position teeth portion and the teeth portion of the output gear.
    Type: Application
    Filed: October 8, 2003
    Publication date: June 3, 2004
    Applicants: OHI SEISAKUSHO CO., LTD., HONDA MOTOR CO., LTD.
    Inventors: Ryoji Shimura, Hidemasa Hirakui, Toshihisa Omori
  • Patent number: 5971342
    Abstract: A biasing structure for biasing a locking pawl-equipped operation rod in a given direction is described. A slit is formed in a rear end of the operation rod. A spring retainer is integrally provided by a bracket through which the operation rod is rotatably connected to a movable rail. The spring retainer includes a rearwardly projected portion whose one surface faces toward a rear end portion of the operation rod and a recess which is formed in a base part of the projected portion and faces toward the rear end portion of the operation rod. A coil spring includes a multi-turned major portion, a front straight portion tangentially extending from a front end of the major portion and a rear straight portion extending radially inward from a rear end of the major portion.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 26, 1999
    Assignee: Ohi Seisakusho Co., Ltd.
    Inventors: Kiyotaka Sakai, Hidemasa Hirakui, Kiyohiko Kamata, Noboru Takamura, Shinichiro Kita
  • Patent number: 5897091
    Abstract: A rail unit comprises a fixed rail, a movable rail slidably engaged with the fixed rail and a locking mechanism for locking the movable rail relative to the fixed rail. In order to increase a mechanical strength of a given part of lower flanges of the movable rail where locking openings for the locking mechanism are formed, the given part is integrally formed at an upper end thereof with a raised portion, or the lower flanges of the movable rail are formed at mutually mating portions with depressed portions. When the movable rail and the fixed rail are subjected to a mutually pulled apart movement upon a vehicle collision of the like, the raised portion or the depression portions are brought into abutment with an inner surface of the fixed rail to suppress or at least minimize deformation of the rail unit.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: April 27, 1999
    Assignee: Ohi Seisakusho Co., Ltd.
    Inventors: Hatuo Hayakawa, Shinichiro Kita, Kiyohiko Kamata, Noboru Takamura, Hidemasa Hirakui
  • Patent number: 5195802
    Abstract: An automotive seat having a seat cushion latching device is disclosed, in which the changing of the seat cushion from an operative latched position to a folded latched position or vice verse is achieved by manipulating only one operation lever.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: March 23, 1993
    Assignees: Ikeda Bussan Co., Ltd., Ohi Seisakusho Co., Ltd.
    Inventors: Hatsuo Hayakawa, Mikio Honma, Hidemasa Hirakui, Hideki Irie, Mikio Fujiwara
  • Patent number: 5158338
    Abstract: A seat assembly for a motor vehicle is shown which comprises a lower rail secured to a floor of the vehicle; an upper rail slidably engaged with the lower rail; a base structure secured to the upper rail to move therewith; a seat cushion held by the base structure in a manner to pivot between a horizontal operative condition and an upright inoperative condition; a seat slide latching mechanism for latching the upper rail to the lower rail, the seat slide latching mechanism having a first cancelling device which cancels the latched condition of the upper rail when actuated; a seat cushion latching mechanism for latching the seat cushion at both the horizontal operative and upright inoperative positions relative to the base structure, the seat cushion latching mechanism having a second cancelling device which cancels the latched condition of the seat cushion when actuated; and a latch cancel inhibiting mechanism which inhibits the actuation of one of the first and second cancelling devices when the other of the
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: October 27, 1992
    Assignees: Ikeda Bussan Co., Ltd., Ohi Seisakusho Co., Ltd.
    Inventors: Hatsuo Hayakawa, Mikio Honma, Hidemasa Hirakui, Hideki Irie, Mikio Fujiwara
  • Patent number: 5156437
    Abstract: A seat assembly for a motor vehicle is shown, which comprises a lower rail secured to a floor of the vehicle; an upper rail slidably engaged with the lower rail; a base structure secured to the upper rail to move therewith; a seat cushion held by the base structure in a manner to pivot between a horizontal operative position and an upright inoperative position; a seat slide latching mechanism for selectively latching and unlatching the upper rail relative to the lower rail; a seat cushion latching mechanism for selectively latching and unlatching the seat cushion at the horizontal operative and upright inoperative positions relative to the base structure; and a control handle incorporated with both the seat slide latching mechanism and the seat cushion latching mechanism.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: October 20, 1992
    Assignees: Ikeda Bussan Co., Ltd., Ohi Seisakusho Co., Ltd.
    Inventors: Hatsuo Hayakawa, Mikio Honma, Hidemasa Hirakui, Hideki Irie, Mikio Fujiwara
  • Patent number: 5156438
    Abstract: A seat assembly for a motor vehicle is shown. The assembly comprises a lower rail secured to a floor of the vehicle; an upper rail slidably engaged with the lower rail; a base structure secured to the upper rail to move therewith; a seat cushion held by the base structure in a manner to pivot between a horizontal operative position and an upright inoperative position; a seat slide latching mechanism for latching the upper rail to the lower rail; a seat cushion latching mechanism for latching the seat cushion at both the horizontal operative and upright inoperative postions relative to the base structure; a latch cancelling mechanism incorporated with the seat cushion latching mechanism for cancelling the latched condition of the seat cushion when actuated; and a restraining mechanism incorporated with the latch cancelling mechanism. The restraining mechanism latches the upper rail to the lower rail when the latch cancelling mechanism is being actuated.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: October 20, 1992
    Assignees: Ikeda Bussan Co., Ltd., Ohi Seisakusho Co., Ltd.
    Inventors: Hatsuo Hayakawa, Mikio Honma, Hidemasa Hirakui, Hideki Irie, Mikio Fujiwara
  • Patent number: 5106144
    Abstract: A seat slide device for a motor vehicle is shown, which includes a seat slide latching mechanism by which an upper movable rail can be latched at a desired fore-and-aft position relative to a lower stationary rail and a rail-disconnection inhibiting mechanism by which undesired separation of the upper rail from the lower rail is prevented even when a great load is applied to the rails due to a vehicle collision of the like. Lock openings formed in the lower rail can be used for not only the seat slide latching mechanism but also the rail-disconnection inhibiting mechanism. Thus, the lower rail has a satisfied mechanical strength.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: April 21, 1992
    Assignees: Ikeda Bussan Co., Ltd., Ohi Seisakusho Co., Ltd.
    Inventors: Hatsuo Hayakawa, Mikio Honma, Hidemasa Hirakui, Hideki Irie, Mikio Fujiwara
  • Patent number: 4820093
    Abstract: A rope hook arrangement for a vehicle has a case fixed to a vehicle body, and a movable member slidable rectilinearly in the case so that a rope hook fixed to the movable member can be projected from the vehicle body and retracted. A spring is disposed between the case and movable member for urging the movable member to a projected position. A push-lock-push-release mechanism is provided for holding the movable member in a middle position in which the rope hook is retracted, allowing the movable member to move to the projected position when the movable member is depressed from the middle position to a depressed position and unhanded at the depressed position, and allowing the movable member to return to the middle position when the movable member is depressed from the projected position to the depressed position and unhanded. The push-lock-push-release mechanism comprises a rotatable member mounted on the case, and engaging and actuating projections formed in the movable member.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: April 11, 1989
    Assignees: Nissan Motor Co., Ltd., Ohi Seisa Kusho Co., Ltd.
    Inventors: Hidemasa Hirakui, Masayoshi Kishima
  • Patent number: 4820094
    Abstract: A rope hook arrangement for a vehicle has a case fixed to the vehicle body and a movable member slidable rectilinearly in the case. A rope hook fixed to one end of the movable member can be projected from the vehicle body and retracted. A spring is disposed between the case and movable member so that the movable member is always urged outwardly. A latch lever is swingably mounted on the movable member, and first and second pins are fixed to the case. The first pin engages with the latch lever and holds the movable member in a middle position in which the rope hook is snugly retracted. If the movable member is pushed down to a depressed position by hand, and unhanded at that position, the first pin pushes the latch lever to a release position, so that the movable member is lifted up by the spring to a projected position in which the rope hook is projected from the vehicle body.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: April 11, 1989
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hidemasa Hirakui, Masayoshi Kishima