Patents by Inventor Ying Lung Lam

Ying Lung Lam 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: 7438618
    Abstract: An aquatic flotation device includes an outer covering having a first side and a second side formed of a polymeric sheet and substantially continuously joined together to retain foamed material such that the covering is under tension. The first side and polymeric sheet are each continuously joined along an edge portion interconnecting the first and second sides, e.g., by stitching. The edge portion overlaps an outer surface or edge of the polymeric sheet in finished condition.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: October 21, 2008
    Assignee: D&S Toys Company Limited
    Inventor: Ying Lung Lam
  • Patent number: 7297043
    Abstract: The toy rocket launcher includes an elongated launch tube and a pusher assembly which slides inside the launch tube in an air-tight relationship. A launch head assembly is rotatably mounted on a forward end of the launch tube and has a plurality of launch ports for receiving toy rockets. The forward end of the launch tube assembly includes a small opening which mates with one of a plurality of air passageways in the launch head assembly. Each air passageway connects with a different launch port. As the head assembly is rotated by hand on the launch tube, a flow of air from the launch tube produced by user action on the pusher assembly is directed to successive launch ports, thereby launching successive toy rockets from the launch head assembly.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: November 20, 2007
    Assignee: D & S Toys Company Ltd.
    Inventor: Ying Lung Lam