Patents by Inventor Franny Chen

Franny Chen 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: 6390237
    Abstract: A step stool or ladder has a first frame member and a second frame member. The second frame member folds to a position within the confines of the first frame member to provide a thin, easily stored ladder for use within a household. The first frame member includes a safety hoop at which the user can easily grab while on the step or rung of the ladder or step stool. The frame also includes a cross member which spans a portion of one of the frame members. The ladder or step stool has one or more steps. At least one of the steps is supported primarily by the cross member in its unfolded position in which a user can ascend on the steps of the stool or ladder. One or more other steps may be attached to step which is primarily supported by the cross member. The step that is primarily supported by the cross member includes a latch that has a first curved end which engages the cross member to prevent the step primarily supported by the cross member from disengaging the cross member.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: May 21, 2002
    Assignee: Tricam Industries, Inc.
    Inventors: Wan Soo Kim, Ping-Jan Chiu, Todd Meyers, Franny Chen