Patents by Inventor Akihiko Takemae

Akihiko Takemae 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: 11011329
    Abstract: A key switch device includes: an operation member to be depressed; a switch disposed below the operation member; a reaction force generating member that is provided between the operation member and the switch, performs elastic buckling deformation by depression of the operation member, gives a reaction force according to the elastic buckling deformation to the operation member; and a depression member that is provided between the operation member and the switch, and depresses the switch; wherein the reaction force generating member includes a supporter that supports the depression member.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 18, 2021
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi Nishino, Shuji Nakamura, Akihiko Takemae, Tamotsu Koike
  • Publication number: 20190341206
    Abstract: A key switch device includes: an operation member to be depressed; a switch disposed below the operation member; a reaction force generating member that is provided between the operation member and the switch, performs elastic buckling deformation by depression of the operation member, gives a reaction force according to the elastic buckling deformation to the operation member; and a depression member that is provided between the operation member and the switch, and depresses the switch; wherein the reaction force generating member includes a supporter that supports the depression member.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 7, 2019
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi NISHINO, Shuji NAKAMURA, Akihiko TAKEMAE, Tamotsu KOIKE
  • Patent number: 10410806
    Abstract: A key switch device includes: an operation member to be depressed; a switch disposed below the operation member; a reaction force generating member that is provided between the operation member and the switch, performs elastic buckling deformation by depression of the operation member, gives a reaction force according to the elastic buckling deformation to the operation member; and a depression member that is provided between the operation member and the switch, and depresses the switch; wherein the reaction force generating member includes a supporter that supports the depression member.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: September 10, 2019
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi Nishino, Shuji Nakamura, Akihiko Takemae, Tamotsu Koike
  • Patent number: 9978544
    Abstract: A keyboard apparatus of an electronic apparatus includes a key-switch structure including a membrane switch having contact points, keycaps for operating the contact points of the membrane switch, and actuators configured to urge the keycaps upwardly upon the keycaps being pressed down, and an upper cover configured to be part of a housing of the electronic apparatus and having a mount part, the mount part supporting the key-switch structure that is placed on an upper surface of the mount part, wherein the mount part is formed integrally with the upper cover.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: May 22, 2018
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Tamotsu Koike, Akihiko Takemae, Satoshi Takeda
  • Publication number: 20170271103
    Abstract: A key switch device includes: an operation member to be depressed; a switch disposed below the operation member; a reaction force generating member that is provided between the operation member and the switch, performs elastic buckling deformation by depression of the operation member, gives a reaction force according to the elastic buckling deformation to the operation member; and a depression member that is provided between the operation member and the switch, and depresses the switch; wherein the reaction force generating member includes a supporter that supports the depression member.
    Type: Application
    Filed: June 1, 2017
    Publication date: September 21, 2017
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi NISHINO, Shuji Nakamura, Akihiko Takemae, Tamotsu Koike
  • Patent number: 9741507
    Abstract: A key switch device includes: an operation member to be depressed; a switch disposed below the operation member; a reaction force generating member that is provided between the operation member and the switch, performs elastic buckling deformation by depression of the operation member, gives a reaction force according to the elastic buckling deformation to the operation member; and a depression member that is provided between the operation member and the switch, and depresses the switch; wherein the reaction force generating member includes a supporter that supports the depression member.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: August 22, 2017
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi Nishino, Shuji Nakamura, Akihiko Takemae, Tamotsu Koike
  • Publication number: 20160225554
    Abstract: A keyboard apparatus of an electronic apparatus includes a key-switch structure including a membrane switch having contact points, keycaps for operating the contact points of the membrane switch, and actuators configured to urge the keycaps upwardly upon the keycaps being pressed down, and an upper cover configured to be part of a housing of the electronic apparatus and having a mount part, the mount part supporting the key-switch structure that is placed on an upper surface of the mount part, wherein the mount part is formed integrally with the upper cover.
    Type: Application
    Filed: January 19, 2016
    Publication date: August 4, 2016
    Inventors: Tamotsu Koike, Akihiko Takemae, Satoshi Takeda
  • Patent number: 9373454
    Abstract: Provided is a key switch that enables sufficiently enhancement of the rigidity of a key top. A key switch includes a support plate; a key top disposed on the support plate; a link configured to link the key top with the support plate; a switch; a first arm disposed on a back surface of the key top between the link and a first short-side end of the key top, and extending in a long-side direction of the key top; a second arm disposed on the back surface of the key top between the link and a second short-side end of the key top, and extending in the long-side direction of the key top; and a reinforcement plate mounted on the key top. The reinforcement plate comprises a short-side part extending in the short-side direction of the key top between the first arm and the second arm.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: June 21, 2016
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Akihiko Takemae, Tamotsu Koike, Takeshi Nishino, Hiroki Satou
  • Publication number: 20150170854
    Abstract: A key switch device includes: an operation member to be depressed; a switch disposed below the operation member; a reaction force generating member that is provided between the operation member and the switch, performs elastic buckling deformation by depression of the operation member, gives a reaction force according to the elastic buckling deformation to the operation member; and a depression member that is provided between the operation member and the switch, and depresses the switch; wherein the reaction force generating member includes a supporter that supports the depression member.
    Type: Application
    Filed: December 3, 2014
    Publication date: June 18, 2015
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi NISHINO, Shuji NAKAMURA, Akihiko TAKEMAE, Tamotsu KOIKE
  • Publication number: 20150021152
    Abstract: A keyboard includes multiple key tops that are arranged adjacent to each other, a panel member including a crosspiece part formed between the multiple key-tops, and a cover part that covers a space between the plurality of key tops and the panel member.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 22, 2015
    Inventors: Tamotsu Koike, Shuji Nakamura, Akihiko Takemae
  • Publication number: 20140318942
    Abstract: Provided is a key switch that enables sufficiently enhancement of the rigidity of a key top. A key switch includes a support plate; a key top disposed on the support plate; a link configured to link the key top with the support plate; a switch; a first arm disposed on a back surface of the key top between the link and a first short-side end of the key top, and extending in a long-side direction of the key top; a second arm disposed on the back surface of the key top between the link and a second short-side end of the key top, and extending in the long-side direction of the key top; and a reinforcement plate mounted on the key top. The reinforcement plate comprises a short-side part extending in the short-side direction of the key top between the first arm and the second arm.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Applicant: Fujitsu Component Limited
    Inventors: Akihiko Takemae, Tamotsu Koike, Takeshi Nishino, Hiroki Satou
  • Patent number: 8779308
    Abstract: A key switch device including a key top; a pair of link members connected to the key top and interlocked with each other to guide a vertical motion of the key top; a switch mechanism including a membrane sheet switch capable of opening and closing a contact section of an electrical circuit in accordance with the vertical motion of the key top; a flexible thin film sheet attached to the membrane sheet switch; and a housing attached to the thin film sheet, the housing adapted to connect the link members to the thin film sheet.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: July 15, 2014
    Assignee: Fujitsu Component Limited
    Inventors: Akihiko Takemae, Norio Endo, Shuji Nakamura, Tamotsu Koike, Takeshi Nishino
  • Patent number: 8299382
    Abstract: A key switch including a base section, a key top, a pair of link members and a switching mechanism. Each link member is provided, at one end region thereof, with a toothed portion meshable with a toothed portion of another link member in a gearing manner and a pivot axle pivotably joined to the base section, and at another end region, with a slide portion slidably engaged with the key top. The base section includes a support plate and a frame member, the frame member being fixedly attached to the upper surface of the support plate. The frame member is provided with a bearing portion pivotably receiving and supporting the pivot axle of each link member. The first end region of each link member is disposed on a lateral side of the frame member and closely to the upper surface of the support plate.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 30, 2012
    Assignee: Fujitsu Component Limited
    Inventors: Akihiko Takemae, Shuji Nakamura, Tamotsu Koike, Takeshi Nishino
  • Publication number: 20120199458
    Abstract: A key switch device including a key top; a pair of link members connected to the key top and interlocked with each other to guide a vertical motion of the key top; a switch mechanism including a membrane sheet switch capable of opening and closing a contact section of an electrical circuit in accordance with the vertical motion of the key top; a flexible thin film sheet attached to the membrane sheet switch; and a housing attached to the thin film sheet, the housing adapted to connect the link members to the thin film sheet.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 9, 2012
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Akihiko TAKEMAE, Norio Endo, Shuji Nakamura, Tamotsu Koike, Takeshi Nishino
  • Publication number: 20090078552
    Abstract: A key switch including a base section, a key top, a pair of link members and a switching mechanism. Each link member is provided, at one end region thereof, with a toothed portion meshable with a toothed portion of another link member in a gearing manner and a pivot axle pivotably joined to the base section, and at another end region, with a slide portion slidably engaged with the key top. The base section includes a support plate and a frame member, the frame member being fixedly attached to the upper surface of the support plate. The frame member is provided with a bearing portion pivotably receiving and supporting the pivot axle of each link member. The first end region of each link member is disposed on a lateral side of the frame member and closely to the upper surface of the support plate.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 26, 2009
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Akihiko Takemae, Shuji Nakamura, Tamotsu Koike, Takeshi Nishino
  • Patent number: 7138587
    Abstract: A key switch used for a keyboard incorporated as an input device in electronic equipment. The key switch includes a support plate; a key top arranged above the support plate; a pair of link members interlocked to each other to support the key top above the support plate and direct the key top in a vertical direction; and a switch mechanism capable of opening and closing a contact section of an electric circuit in accordance with a vertical movement of the key top. The switch mechanism includes a membrane switch sheet carrying the contact section at a position corresponding to the key top and placed on the support plate. Each of the link members includes a sliding part slidably engaged with the support plate. The membrane switch sheet is provided with a through-hole in a region where the sliding part of each link member is engaged with the support plate, the sliding part of the link member being slidably placed on the support plate through the through-hole in the membrane switch sheet.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: November 21, 2006
    Assignee: Fujitsu Component Limited
    Inventors: Takeshi Nishino, Shuji Nakamura, Akihiko Takemae
  • Publication number: 20060000694
    Abstract: A key switch used for a keyboard incorporated as an input device in electronic equipment. The key switch includes a support plate; a key top arranged above the support plate; a pair of link members interlocked to each other to support the key top above the support plate and direct the key top in a vertical direction; and a switch mechanism capable of opening and closing a contact section of an electric circuit in accordance with a vertical movement of the key top. The switch mechanism includes a membrane switch sheet carrying the contact section at a position corresponding to the key top and placed on the support plate. Each of the link members includes a sliding part slidably engaged with the support plate. The membrane switch sheet is provided with a through-hole in a region where the sliding part of each link member is engaged with the support plate, the sliding part of the link member being slidably placed on the support plate through the through-hole in the membrane switch sheet.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 5, 2006
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi Nishino, Shuji Nakamura, Akihiko Takemae