Patents by Inventor WEI-SHIUN CHANG

WEI-SHIUN CHANG 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).

  • Electronic deadbolt lock
    Patent number: 10344501
    Abstract: An electronic deadbolt lock which includes a housing; an electronic recognition device disposed on the housing; a turnpiece pivotally mounted on the housing and connected to a deadbolt; a key operating mechanism disposed on the housing and connected to the deadbolt, wherein the deadbolt moves as a result of rotation of one of the turnpiece and the key operating mechanism; and a braking mechanism controlled by the electronic recognition device, wherein the braking mechanism normally applies a brake to the turnpiece to prevent the turnpiece from being rotated, and it is only when a user passes verification by the electronic recognition device that the turnpiece can be rotated by the user.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: July 9, 2019
    Assignee: PAMEX INC.
    Inventor: Wei-Shiun Chang
  • ELECTRONIC DEADBOLT LOCK
    Publication number: 20190040655
    Abstract: An electronic deadbolt lock which includes a housing; an electronic recognition device disposed on the housing; a turnpiece pivotally mounted on the housing and connected to a deadbolt; a key operating mechanism disposed on the housing and connected to the deadbolt, wherein the deadbolt moves as a result of rotation of one of the turnpiece and the key operating mechanism; and a braking mechanism controlled by the electronic recognition device, wherein the braking mechanism normally applies a brake to the turnpiece to prevent the turnpiece from being rotated, and it is only when a user passes verification by the electronic recognition device that the turnpiece can be rotated by the user.
    Type: Application
    Filed: August 7, 2017
    Publication date: February 7, 2019
    Inventor: WEI-SHIUN CHANG