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US 4,307,549 AGranted
Skylight cover
AssigneeRCA Corporation
InventorJames A. Clanton
Life of this patent
Estimating the term…
Abstract
A skylight cover which can be used as a heat and smoke vent for a roof of a building includes a cover which deforms and disengages from a curb structure on the roof, and is coated with a thermally insulating coating which thermally protects the cover from the cooling effects of ambient precipitation.
Claims12
A cover for a heat and smoke vent in a building roof comprising:
- a vent adapted to be secured to the roof and forming a vent opening,
- a heat softenable and heat shrinkable sheet thermoplastic vent cover means capable of softening, shrinking, and sagging when heated to a given temperature,
- a thermally insulating coating in intimate contact with and bond to the outside surface of said sheet thermoplastic vent cover means capable of shrinking and sagging with said vent cover means, said coating insulating the cover means from the cooling effects of ambient precipitation, thereby permitting said cover to reach said given temperature when subjected to a given amount of heat from within said building, and thereby shrink and sag and disengage from the means set forth below for releaseably securing the vent, said coating being sufficiently thin to have negligible effect on the shrinking and sagging of said vent cover means and sufficiently thick to insulate said vent cover means from said cooling effects of ambient precipitation, and
- means for releaseable securing the vent cover means to the curb.
1 more element
A thermoplastic skylight opening cover comprising:
- a sheet of light transmitting thermoplastic material which is sufficiently rigid to maintain its shape when covering said opening, and
- a coating of light transmitting and thermally insulating material in intimate contact with and bond to the outside surface of said sheet, said coating being sufficiently thin to have negligible effect on the shrinking and sagging of said vent cover means and sufficiently thick to insulate said vent cover means from the cooling effects of ambient precipitation.
Dependencies are inferred from the claim text.