Patents by Inventor Yeung Chi Ping

Yeung Chi Ping 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: 6529687
    Abstract: An APS single use camera has a cover with an aperture that provides access to the film sensor and the light lock door driver via a tool adapted to be received into the aperture. The tool is used to open the light lock door and push the film sensor out of the film path so as to enable film from the APS film cassette to be scrolled into the film path. The structure permits pre-loading of film outside of a darkroom, and such a method is disclosed. The camera also employs a brake that prevents the film sensor from sensing for the presence or absence of film except during a brief sensing interval that occurs during a film advance operation.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: March 4, 2003
    Assignee: Concord Camera Corp.
    Inventor: Yeung Chi Ping
  • Patent number: 6151452
    Abstract: A camera for making pseudo-photographic images has a series of viewfinder masks that define various fields of vision and a series of light-pipe masks that selectively block the passage of light through two light pipes disposed within the camera. The selective blockage causes various patterns of encodement marks to be placed on the edge of the camera's photographic film. The masks are rotatably disposed around the optical axis of the camera's picture-taking lens. The masks are manually rotated by the camera user via a lever and gear assembly disposed on the camera's front cover.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: November 21, 2000
    Assignee: Concord Camera Corp.
    Inventor: Yeung Chi Ping