Patents by Inventor Jihuang Chen

Jihuang Chen 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: 8970331
    Abstract: A keyswitch assembly includes a movable keycap having a space provided in a bottom of the keycap; a metal support plate having an opening, the metal including a cantilever bridge; a switch located under the opening of the metal support plate; a magnet disposed within the space of the keycap; wherein as the keycap is undepressed, the keycap is in an initial state and the keyswitch assembly is OFF, and the magnet draws in the cantilever bridge, and as the keycap is depressed downward, the magnet is forced to depart from the cantilever bridge and actuates the switch making the keyswitch assembly to turn ON. As the forced is released, the magnetic force between the cantilever bridge and the magnet forces the keycap to return its initial state.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: March 3, 2015
    Assignee: Darfon Electronics Corp.
    Inventors: Chao Lung Chang, JiHuang Chen, Chien-Shih Hsu
  • Publication number: 20120313738
    Abstract: A keyswitch assembly includes a movable keycap having a space provided in a bottom of the keycap; a metal support plate having an opening, the metal including a cantilever bridge; a switch located under the opening of the metal support plate; a magnet disposed within the space of the keycap; wherein as the keycap is undepressed, the keycap is in an initial state and the keyswitch assembly is OFF, and the magnet draws in the cantilever bridge, and as the keycap is depressed downward, the magnet is forced to depart from the cantilever bridge and actuates the switch making the keyswitch assembly to turn ON. As the forced is released, the magnetic force between the cantilever bridge and the magnet forces the keycap to return its initial state.
    Type: Application
    Filed: June 5, 2012
    Publication date: December 13, 2012
    Applicant: DARFON ELECTRONICS CORP.
    Inventors: Chao Lung CHANG, JiHuang CHEN, Chien-Shih HSU
  • Patent number: 6839226
    Abstract: A keyboard with adjustable support devices for supporting the keyboard at several levels is provided. Each support device includes a leg able to rotate along the bottom of the keyboard. The angle between the axis of rotation and the bottom plane of the keyboard has a value other than 90 degrees. The leg is selectively posed at the first or second state. When the leg is at the first state, the tilt angle between the keyboard and a desk is smaller. When the leg is at a second state, the tilt angle between the keyboard and a desk is larger. There are multiple support devices provided on the bottom plane of the keyboard. Therefore, the keyboard provides multiple variations in angle and height by adjusting the positions of the legs.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: January 4, 2005
    Assignee: Darfon Electronics Corp.
    Inventor: Jihuang Chen
  • Publication number: 20040037027
    Abstract: A keyboard with adjustable support devices for supporting the keyboard at several levels is provided. Each support device includes a leg able to rotate along the bottom of the keyboard. The angle between the axis of rotation and the bottom plane of the keyboard has a value other than 90 degrees. The leg is selectively posed at the first or second state. When the leg is at the first state, the tilt angle between the keyboard and a desk is smaller. When the leg is at a second state, the tilt angle between the keyboard and a desk is larger. There are multiple support devices provided on the bottom plane of the keyboard. Therefore, the keyboard provides multiple variations in angle and height by adjusting the positions of the legs.
    Type: Application
    Filed: August 11, 2003
    Publication date: February 26, 2004
    Inventor: Jihuang Chen