Patents by Inventor Cheng Kai Yuan

Cheng Kai Yuan 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).

  • Input device with overlapping key structure
    Patent number: 10802602
    Abstract: An input device having an overlapping key structure includes a plurality of keys, each of the plurality of keys configured to actuate a respective key switch in response to an applied mechanical force; and a key support frame, where each of the plurality of keys includes a spring arm portion coupled to the key support frame at a first end of the each of the plurality of keys such that the each of the plurality of keys deflects through a range of motion in response to the applied mechanical force, and each of the plurality of keys overlaps with another one of the plurality of keys such that each of the plurality of keys is included in an envelope of a two-dimensional cross section of the range of motion of another one of the plurality of keys when viewed from a direction perpendicular to the two-dimensional cross section.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: October 13, 2020
    Assignee: Logitech Europe S.A.
    Inventors: Kuo Hsiang Chen, Etienne Julien-Laferriere, Feng Hao Lin, Cheng Kai Yuan
  • INPUT DEVICE WITH OVERLAPPING KEY STRUCTURE
    Publication number: 20190354197
    Abstract: An input device having an overlapping key structure includes a plurality of keys, each of the plurality of keys configured to actuate a respective key switch in response to an applied mechanical force; and a key support frame, where each of the plurality of keys includes a spring arm portion coupled to the key support frame at a first end of the each of the plurality of keys such that the each of the plurality of keys deflects through a range of motion in response to the applied mechanical force, and each of the plurality of keys overlaps with another one of the plurality of keys such that each of the plurality of keys is included in an envelope of a two-dimensional cross section of the range of motion of another one of the plurality of keys when viewed from a direction perpendicular to the two-dimensional cross section.
    Type: Application
    Filed: May 21, 2018
    Publication date: November 21, 2019
    Inventors: Kuo Hsiang Chen, Etienne Julien-Laferriere, Feng Hao Lin, Cheng Kai Yuan