Patents Assigned to Dunning Ltd.
  • Convertible sofa
    Patent number: 3965499
    Abstract: The bed or mattress frame for a convertible sofa is formed of at least two flat spring sections hinged along adjacent longitudinal edges and foldable into a storage position with the spring sections arranged in flat, overlying relationship with each other behind the front board of the sofa. As the sections are unfolded, a linking bar at each end of the frame activates a pivotally attached lever to lift the spring sections to a level above the front board.
    Type: Grant
    Filed: April 18, 1975
    Date of Patent: June 29, 1976
    Assignee: Dunning Ltd.
    Inventor: John M. Dunning, III