Patents Assigned to Therma-Tru Corp.
  • Patent number: 4720951
    Abstract: An improved frame assembly for doors, windows and the like is disclosed. A frame receives a central panel which defines an edge about its exterior perimeter. The frame comprises a first and second skins in opposed relationship defining a cavity therebetween. The interior edge of the frame has internal support ribs which act in conjunction with the interior edge of the frame to grip the edge of the central panel while the exterior edges of the skins are separated by a sizable insert. The cavity between the skins is filled with a foamable insulating material which surrounds the edge of the central panel and forms a weathertight seal.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: January 26, 1988
    Assignee: Therma-Tru Corp.
    Inventors: John E. Thorn, Michael L. Skidmore
  • Patent number: 4550540
    Abstract: A compression molded door assembly is disclosed. A pair of compression molded skins are mounted on a rectangular perimeter frame which extends outwardly from the edges of the skins. The compression molded skins include a molding resin and reinforcing glass fibers. The outer surface of the skin is essentially devoid of glass fibers for a predetermined distance. A foamed core is positioned within the frame in adhering relationship to the opposed skins. A texture is molded on the exterior of the skins which simulates the grain and texture of a wood door.
    Type: Grant
    Filed: March 29, 1984
    Date of Patent: November 5, 1985
    Assignee: Therma-Tru Corp.
    Inventor: John E. Thorn