Patents by Inventor Chen Rufang

Chen Rufang 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).

  • TOOL-LESS REKEYABLE LOCK CYLINDER
    Publication number: 20220316238
    Abstract: A rekeyable lock cylinder with a cylinder body and a plug assembly. The lock cylinder includes a plurality of key followers and a corresponding plurality of racks disposed in the plug assembly. Disengaging the racks from the key followers allows rekeying of the lock cylinder.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 6, 2022
    Inventor: Chen Rufang
  • Tool-less rekeyable lock cylinder
    Patent number: 11319726
    Abstract: A rekeyable lock cylinder with a cylinder body and a plug assembly. The lock cylinder includes a plurality of key followers and a corresponding plurality of racks disposed in the plug assembly. Disengaging the racks from the key followers allows rekeying of the lock cylinder.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: May 3, 2022
    Assignee: Spectrum Brands, Inc.
    Inventor: Chen Rufang
  • TOOL-LESS REKEYABLE LOCK CYLINDER
    Publication number: 20200123806
    Abstract: A rekeyable lock cylinder with a cylinder body and a plug assembly. The lock cylinder includes a plurality of key followers and a corresponding plurality of racks disposed in the plug assembly. Disengaging the racks from the key followers allows rekeying of the lock cylinder.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 23, 2020
    Inventor: Chen Rufang