Movable or removable closures – Frame with closure feature
Patent
1983-12-14
1985-05-14
Kannan, Philip C.
Movable or removable closures
Frame with closure feature
49404, E06B 104
Patent
active
045163561
ABSTRACT:
An insulated vinyl window frame includes at least one passageway having insulation disposed therein. The insulation may be either foamed in place or rigid material which is formed to size and then inserted into the passageway during assembly of the frame. Preferably, the passageway walls include a plurality of ribs which position the rigid insulation a small interval from the walls defining and sealing off air spaces between the walls and the insulation thereby providing small, substantially non-circulating regions of air. Since the air has a heat resistance value greater than most other construction and insulating materials such as plastic, glass, rubber or metal, the window frame exhibits extraordinary insulating characteristics. Plural passageways in both vertical and horizontal members of the frame having plural ribs which extend between the walls of the passageway and the rigid insulation to both support the insulation and seal and define a plurality of substantially non-circulating regions of air are also comprehended by the instant invention.
REFERENCES:
patent: 3175256 (1965-03-01), Horton
patent: 4259813 (1981-04-01), Winner et al.
patent: 4281492 (1981-08-01), Schock et al.
patent: 4286716 (1981-09-01), Budich et al.
patent: 4299060 (1981-11-01), Tippmann
patent: 4351131 (1982-09-01), Kubik
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