Patents Assigned to David C. K. Kwan
  • Patent number: 5092810
    Abstract: A toy audio generating device is disclosed for use as an accessory to another toy, for example as a backpack for a toy action figure. The toy audio device comprises a receptacle defining an enclosure containing a speaker and plural batteries laid out side-by-side adjacent the end of the speaker opposite the sound projecting portion of the speaker. A printed circuit board containing circuitry for generating audio signals is located in a space alongside the speaker under a side wall of the enclosure. A switch for activating sound generation is mounted to that side wall and directly contacts the printed circuit board.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: March 3, 1992
    Assignees: Steven Lebensfeld, Harvey Goldberg, David C. K. Kwan
    Inventors: David C. K. Kwan, Ma H. Wai, Steven Lebensfeld, Harvey Goldberg
  • Patent number: 5073140
    Abstract: Toy action figures and detachable accessories therefor incorporating audio generating apparatus are disclosed. The audio generating apparatus is entirely contained within the accessory and generates both speed and sound effects. The detachable accessories have a configuration and visual appearance coordinated with the configuration and visual appearance of the toy action figure. For example, the accessory may be a backpack configured and having a visual appearance to coordinate with a soldier, spaceman or policeman action figure. The audio generating apparatus includes separate controls for causing the audio generating apparatus to independently generate speech and sound effects. The accessories in configuration, appearance and sound content are made to be attachable and applicable to different types of action figures.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: December 17, 1991
    Assignees: Steven Lebensfeld, Harvey Goldberg, David C. K. Kwan, Ma H. Wai
    Inventors: Steven Lebensfeld, Harvey Goldberg, David C. K. Kwan, Ma H. Wai