Patents by Inventor Mei-Ling Cheung

Mei-Ling Cheung 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).

  • Linkage lock
    Patent number: 8302436
    Abstract: A linkage lock comprises a lock body, a linkage chain, and a lock mechanism arranged in the lock body. The linkage chain is formed via linking a plurality of link plates and has a first end joined with the lock body and a second end able to be inserted into and secured to a socket of the lock body. The lock body has a shaft. When intending to collect the linkage lock whose second end is unlocked, the user winds the linkage chain around the surface of the shaft with the shaft being a central axis to fold the linkage lock.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 6, 2012
    Assignee: Sinox Co., Ltd.
    Inventor: Mei Ling Cheung
  • Linkage Lock
    Publication number: 20120151973
    Abstract: A linkage lock comprises a lock body, a linkage chain, and a lock mechanism arranged in the lock body. The linkage chain is formed via linking a plurality of link plates and has a first end joined with the lock body and a second end able to be inserted into and secured to a socket of the lock body. The lock body has a shaft. When intending to collect the linkage lock whose second end is unlocked, the user winds the linkage chain around the surface of the shaft with the shaft being a central axis to fold the linkage lock.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 21, 2012
    Applicant: SINOX CO., LTD.
    Inventor: Mei Ling Cheung
  • Lock
    Patent number: D665648
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: August 21, 2012
    Assignee: Sinox Co., Ltd.
    Inventor: Mei-Ling Cheung