Patents Assigned to Knox Manufacturing Company
  • Patent number: 4110003
    Abstract: A portable movie screen device includes a flexible screen, a pair of stiffening members one secured at each of the opposite edges of the screen, a pair of tension elements secured together so as to be movable from collapsed relation to extended aligned relation, means for anchoring the extended tension elements to the stiffening members so as to place the screen in a taut viewing position, and means for supporting the screen in upright position. The support means may include a leg element secured to the tension elements. The stiffening members are hollow so that the collapsed elements may be stored therein. Various means are provided to connect the elements together and to fix them in operative position.
    Type: Grant
    Filed: December 27, 1975
    Date of Patent: August 29, 1978
    Assignee: Knox Manufacturing Company
    Inventor: Robert W. Zinn