Patents by Inventor Hopkin Wu

Hopkin Wu 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: 11081299
    Abstract: The snap action switch of the present disclosure may include a housing with a plurality of protruding blocks extending inwardly, a plunger disposed on the housing, a first elastic component coupled to the plunger for providing a force against the plunger, a cam located within the housing and being movable by the plunger, a rotor located within the housing and associated with the cam, and a second elastic component coupled to the rotor for providing a force against the rotor. When the cam moves to a first position, the rotor may rotate such that a lower surface of the cam engages with an upper surface of the rotor, and when the cam moves to a second position, the rotor may continue to rotate such that the upper surface of the rotor engages with a lower surface of at least one of the plurality of protruding blocks of the housing.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: August 3, 2021
    Assignee: Illinois Tool Works Inc.
    Inventor: Hopkin Wu
  • Publication number: 20190348234
    Abstract: The snap action switch of the present disclosure may include a housing with a plurality of protruding blocks extending inwardly, a plunger disposed on the housing, a first elastic component coupled to the plunger for providing a force against the plunger, a cam located within the housing and being movable by the plunger, a rotor located within the housing and associated with the cam, and a second elastic component coupled to the rotor for providing a force against the rotor. When the cam moves to a first position, the rotor may rotate such that a lower surface of the cam engages with an upper surface of the rotor, and when the cam moves to a second position, the rotor may continue to rotate such that the upper surface of the rotor engages with a lower surface of at least one of the plurality of protruding blocks of the housing.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 14, 2019
    Inventor: Hopkin Wu