Patents Assigned to Schneider Corporation of America
  • Focusing system for a transparency projector
    Patent number: 4744652
    Abstract: A focusing system for slide projectors and the like in which the lens is mounted in a replaceable shift ring which can be selected from a set of such rings with different offsets between the lens axis and the projector axis. The ring can be assembly-affixed on a plate which can be clamped against the projector housing over the projection lens aperture thereof.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: May 17, 1988
    Assignee: Schneider Corporation of America
    Inventor: Dwight W. Lindsey