Patents by Inventor Chan K. Yan

Chan K. Yan 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: 4451130
    Abstract: In a camera adapted to receive a disc-shaped magazine and including a housing with front and rear walls having a lens window exposed on the front wall near one side margin of the housing and front and rear viewfinder windows exposed on the front and rear walls on the same side of the housing as the lens window, a hollow handle is provided having spaced front and rear walls defining therebetween an open housing side-receiving recess. The handle is much narrower than the width of the housing so as to fit over only the side of the housing containing the lens and viewfinder windows.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: May 29, 1984
    Assignee: W. Haking Enterprises Limited
    Inventor: Chan K. Yan
  • Patent number: 4217042
    Abstract: A camera for receiving a cartridge containing relatively high or low speed films has an adjustable aperture mechanism for regulating the amount of light exposing the film, and a manual control mechanism operatively associated therewith and movable between "sunny", "cloudy" and "flash" settings to provide respectively "small", "intermediate" and "large" apertures for high speed film. The cartridge includes structural means thereon of a predetermined configuration in accordance with the speed of the film contained therein. An automatic control mechanism operatively associated with the adjustable aperture mechanism senses the structural means on the cartridge to increase the "small" aperture to the "intermediate" aperture and the "intermediate" aperture to the "large" aperture for low speed film without changing the settings of the manual control mechanism.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: August 12, 1980
    Assignee: W. Haking Enterprises Ltd.
    Inventor: Chan K. Yan
  • Patent number: 4213687
    Abstract: A film advancing mechanism comprises a planetary gear train including preferably an annular film winding gear having internal teeth meshing with an eccentrically mounted gear carried by a drive gear which rotates in one direction and the other as a manually operable film winding member is moved back and forth. A sun gear carried by a rotatable slip clutch-forming member meshes with the eccentric gear. The slip clutch-forming member forms a slip clutch with a ratchet wheel held against rotation in one direction by a locking pawl so that the sun gear is normally locked against rotation when the film winding member is moved in the winding direction. When the sun gear is locked in position, bodily movement of the eccentrically mounted gear on the drive gear drives the annular film winding gear. When a film metering pawl enters a metering aperture of the film, a pawl locks the annular gear against further rotation.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: July 22, 1980
    Assignee: W. Haking Enterprises Limited
    Inventors: Russell E. Hattis, Chan K. Yan