Patents by Inventor Po Chu Cheung

Po Chu 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).

  • Anti-theft zipper head
    Patent number: 8307518
    Abstract: An anti-theft zipper head includes a head member and a handle. The head member includes a zipper groove for engaging a zipper. The handle is connected with the head member. The head member further includes an elastic piece. The elastic piece is configured for engaging the zipper and thereby confining the movement of the head member on the zipper. The handle includes a push switch. The push switch is configured to control the elastic piece to extend into the zipper groove so as to engage the zipper, or to withdraw from the zipper groove so as to be disengaged with the zipper.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: November 13, 2012
    Inventor: Po Chu Cheung
  • ANTI-THEFT ZIPPER HEAD
    Publication number: 20100242236
    Abstract: An anti-theft zipper head includes a head member and a handle. The head member includes a zipper groove for engaging a zipper. The handle is connected with the head member. The head member further includes an elastic piece. The elastic piece is configured for engaging the zipper and thereby confining the movement of the head member on the zipper. The handle includes a push switch. The push switch is configured to control the elastic piece to extend into the zipper groove so as to engage the zipper, or to withdraw from the zipper groove so as to be disengaged with the zipper.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 30, 2010
    Inventor: Po Chu Cheung