Patents by Inventor Qixiang Zeng

Qixiang Zeng 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: 6286259
    Abstract: A window shoe device for conveniently preventing the drag link from slipping out of the drag link retaining member. The window shoe device includes a housing having a slotted drag link guide portion, a window mount support portion having a hole therethrough, and further includes a window mount member having a slot therein for securely retaining a pivot bar for a window sash and being pivotally supported by the window mount support member, and also includes a window mount retainer member having winged ends for securing the window mount member to the housing, and further includes a drag link retainer member having a pair of prongs extending outwardly for securely retaining a drag link, and also includes a slotted drag link guide reinforcement member removably disposed adjacent to the drag link guide portion.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: September 11, 2001
    Inventors: Qixiang Zeng, Suiping Wei