Patents by Inventor Wing F. Lam

Wing F. 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: 5413516
    Abstract: A toy doll with lips that move as speech sounds are produced from a speaker. Pressing a button on the body of the doll activates an integrated circuit that sends voice signals to the speaker, which transmits the sounds. This in turn actuates a switch, causing a motor to run. The drive shaft of the motor rotates, causing a series of meshing gears to turn. The axle of a gear in the series that passes through the eccentric bore of an internal cam causes the cam to move so that it forces an L-shaped cam follower to rock back and forth about a pivot point. The rotatable pivot rod is supported by the rigid torso of the doll, and one end of the cam follower is attached to the interior of the doll's flexible face at a point connecting the two lips. The rocking of the cam follower causes the lips to close and open in a simulation of talking. The motor only runs, and consequently the lips only move, at the same time that simulated speech is transmitted from the speaker.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: May 9, 1995
    Assignee: Fung Seng Industrial Co., Ltd.
    Inventor: Wing F. Lam
  • Patent number: 5281180
    Abstract: A battery-powered doll which cries or laughs, depending upon how it has been stimulated. There is an optical sensor fixed in the mouth of the doll and connected to an integrated circuit located in the torso of the doll. When there is insufficient light striking the sensor, the doll cries through a speaker in the doll's torso. When the doll is subsequently brought into the light to sufficiently expose the sensor, the doll laughs for a short, but variable length of time. There is a first pressure actuated switch positioned in the doll's torso such that it may be actuated by a tickling type of pressure applied to the side of the torso. The doll laughs when this switch is actuated. There is a second pressure actuated switch in the doll's torso which may be activated by pressing the stomach area of the doll. The doll cries in response to actuation of this second switch.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: January 25, 1994
    Inventors: Wing F. Lam, Yu F. Lam