Static structures (e.g. – buildings) – Auxiliary imperforate panel-like shield attached to main...
Reexamination Certificate
1999-11-02
2001-05-15
Kent, Christopher T. (Department: 3635)
Static structures (e.g., buildings)
Auxiliary imperforate panel-like shield attached to main...
C160S379000, C049S050000
Reexamination Certificate
active
06230455
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a window screen. More particularly, the invention relates to a window screen having strong components that may be used as an impact protective system, particularly for window protection from impacts due to debris from wind storms, hurricanes, tornados and the like.
BACKGROUND OF THE INVENTION
Windows are typically provided in structures such as residential homes, schools, office buildings and other buildings designed primarily for human occupation. Often times it is desirable to allow for the windows to be opened so that outside air may enter the building. Screens are typically provided on such window openings so that air may pass through the window opening, but undesirable objects such as insects are kept outside of the building. Most prior art screens are made of aluminum mesh and do not have adequate strength to protect against window breakage. Also, whether the window can open or not, prior art screens are known that can protect window glass from damage, if strong enough.
In areas that are subject to high winds, such as areas that may experience hurricanes or tornados, it is desirable to provide a screen that will protect window glass from flying debris. Buildings that are prone to be vandalized, such as schools and low income housing, use screens to protect against glass breakage. One prior art screen that provides protection against glass breakage comprises stainless steel mesh within an aluminum frame. In the prior art, the screen is typically sized to fit within a wall opening and secured by screws to the frame of the window. The screen will then be recessed from the building exterior wall.
SUMMARY OF THE INVENTION
The invention of the application is a high strength window screen frame adapted to fit flush on an extension wall of a building over a window. The window screen frame includes an extruded metal frame that defines an opening for receiving mesh. A screen plate portion of the extruded metal frame is provided on the frame proximate the opening. A flange portion of the extruded metal frame is provided on an outside of the frame away from the opening. A beveled surface, or alternatively, a rectangular edge for the flanged portion may be provided. A screen plate stiffener is removably affixed to a back side of the extruded metal frame to secure a screen within the high strength window screen frame. Heavy duty mesh screen is preferably used with the high strength window screen frame of the invention. The flanged portion of the window screen frame is screwed by fasteners to an exterior wall surrounding a window opening of a structure.
REFERENCES:
patent: 5141046 (1992-08-01), Duncan
patent: 5603190 (1997-02-01), Sanford
patent: 5720137 (1998-02-01), Rodriquez
patent: 5852903 (1998-12-01), Astrizky
patent: 6122868 (2000-09-01), Knezevich
Arehart Fred B.
Lilie Glenn T.
Bracewell & Patterson L.L.P.
Bradley James E.
CPI Group, Inc.
Kent Christopher T.
Thissell Jennifer I.
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