Patents by Inventor Karl J. Kallenberg

Karl J. Kallenberg 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).

  • Image projectors with pivoting mirror in front screen projection system
    Patent number: 4847645
    Abstract: A projector with two levels of illumination for projecting images from a film transparency is disclosed. Monitoring circuitry configures the level projector for the appropriate lead of illumination depending upon an operator request for preview illumination or a heightened level of illumination for exposure of a photograph of a composite optical image including the projected image. The monitoring circuitry also prevents excessive duration of illumination at the preview level.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: July 11, 1989
    Assignee: Lifetouch National School Studios Inc.
    Inventors: Karl J. Kallenberg, Ronald B. Harvey
  • Camera and projector alignment for front screen projection system
    Patent number: 4843410
    Abstract: An alignment mechanism for a detachably linked camera and projector for a front screen projection system is disclosed. The alignment mechanism, after initial adjustment, returns the camera and projector to the appropriate alignment for projecting optical images along the optical axis of the camera for recording composite optical images.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: June 27, 1989
    Assignee: Lifetouch National School Studios Inc.
    Inventor: Karl J. Kallenberg
  • Film transparency slide carrier and conveyor system for front screen projection system
    Patent number: 4832482
    Abstract: A slide carrier and cooperating guide assembly are disclosed which provide for quick location and precise positioning of film transparencies at a determined focus point in a projector. Slide carriers introduced to the guide assembly are readily interchangeable to allow easy selection of a desired film transparency for projection.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: May 23, 1989
    Assignee: Lifetouch National School Studios, Inc.
    Inventor: Karl J. Kallenberg