Patents Assigned to School Health Supply Company
  • Patent number: 4027954
    Abstract: A device for testing eyes provided with a rotatable drum located within a light impermeable casing in which the drum carries a plurality of slides bearing characters positioned on the perimeter of the drum and illuminated by a lamp located within the drum, and in which the characters may be viewed by the person whose eyes are being tested through an optical system. The optical system has a direct path to a near testing station on the drum for near vision testing, and a longer indirect path to a far vision testing station on the drum utilizing a mirror positioned perpendicularly to the far vision testing station to increase the path length.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: June 7, 1977
    Assignee: School Health Supply Company
    Inventor: Carleton R. Good