Patents by Inventor Shaofei Zhao

Shaofei Zhao 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: 6948991
    Abstract: This invention describes a swim ring for an infant, which is an inflated circular ring. The circular ring comprises an inner ring and an outer ring, and the outer ring is thicker than the inner ring. A cut is formed through the inner ring and the outer ring. A fastener selectively connects the inner ring and the outer ring. The outer ring is a two-part structure. Two air holes are formed in the outer ring, and an inner air chamber of the inner ring communicates with one of the chambers of the outer ring. A recess to hold an infant's chin is formed in the inner ring. This structure allows the inflated circular ring to be attached around an infant's neck and make the infant float perpendicularly in water without restricting movement of the infant's limbs or restricting breathing.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: September 27, 2005
    Inventor: Shaofei Zhao
  • Publication number: 20050101204
    Abstract: This invention describes a swim ring for an infant, which is an inflated circular ring. The circular ring comprises an inner ring and an outer ring, and the outer ring is thicker than the inner ring. A cut is formed through the inner ring and the outer ring. A fastener selectively connects the inner ring and the outer ring. The outer ring is a two-part structure. Two air holes are formed in the outer ring, and an inner air chamber of the inner ring communicates with one of the chambers of the outer ring. A recess to hold an infant's chin is formed in the inner ring. This structure allows the inflated circular ring to be attached around an infant's neck and make the infant float perpendicularly in water without restricting movement of the infant's limbs or restricting breathing.
    Type: Application
    Filed: December 15, 2004
    Publication date: May 12, 2005
    Applicants: SHAOFEI ZHAO, KUANG-TA HUANG
    Inventor: Shaofei Zhao