Patents by Inventor Fuyou Shi

Fuyou Shi 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).

  • Rotation control device for pet leash
    Patent number: 7784728
    Abstract: A rotation control device for pet leash includes a casing, a cover, and a wheel disposed in the casing. The casing includes a locking button, an unlocking button, and a self lock slider connected with a locking spring, an unlocking spring, and a self lock spring respectively. The unlocking button has an unlocking retaining hole having a position corresponding to an unlocking column on the casing. The unlocking button includes an unlocking retaining pole is inserted into an unlocking sliding groove of the casing. The locking button has a locking retaining rectangular hole having a position corresponding to a locking column on the casing. The self lock slider includes a self lock retaining pole is inserted into a self lock sliding groove in the casing, wherein the self lock retaining pole is against an unlocking retaining pole.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: August 31, 2010
    Inventor: Fuyou Shi
  • Rotation control device for pet leash
    Publication number: 20090277398
    Abstract: A rotation control device for pet leash includes a casing, a cover, and a wheel disposed in the casing. The casing includes a locking button, an unlocking button, and a self lock slider connected with a locking spring, an unlocking spring, and a self lock spring respectively. The unlocking button has an unlocking retaining hole having a position corresponding to an unlocking column on the casing. The unlocking button includes an unlocking retaining pole is inserted into an unlocking sliding groove of the casing. The locking button has a locking retaining rectangular hole having a position corresponding to a locking column on the casing. The self lock slider includes a self lock retaining pole is inserted into a self lock sliding groove in the casing, wherein the self lock retaining pole is against an unlocking retaining pole.
    Type: Application
    Filed: May 6, 2008
    Publication date: November 12, 2009
    Inventor: Fuyou Shi