Static structures (e.g. – buildings) – Transparent panel having active treatment with gas or liquid
Reexamination Certificate
1999-05-06
2001-04-03
Kent, Christopher T. (Department: 3635)
Static structures (e.g., buildings)
Transparent panel having active treatment with gas or liquid
C052S204100, C052S204600, C052S209000, C052S656200, C052S656500, C052S656900, C052S786100
Reexamination Certificate
active
06209269
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is generally related to the manufacture of windows and other building partitions, and more specifically to multiple pane thermoacoustic windows and other building partitions, such as doors, walls and ceilings. The invention is an improvement of current systems for producing two pane thermoacoustic windows and one pane windows for houses and buildings, especially systems that use a plastic material to make the profiles and the frame. The new system can be employed in other similar products like partitions, doors, and ceilings.
2. Description of the Related Art
The insulating effect of thermoacoustic windows currently on the market originates mainly from the airtight chamber between the two panes. Acoustic insulation is achieved because when a noise is produced at the exterior of the airtight chamber between panes, the air inside the chamber vibrates less than the air outside, which reduces the sound level between the focus and the other side of the airtight chamber. Any tiny orifice that allows communication between the inside air and the outside air reduces the noise-insulating capacity of the window. For this reason, thermoacoustic windows require good sealing contact in all critical points, especially, in the unions of profiles that form the window frame, in the contact area of the glass panes with the window frame, and in the contact area between the window and the wall. Since sound does not travel in a vacuum, an airtight chamber with a vacuum inside will have better insulating capacity. In a similar way, when the two sides of the airtight chamber are exposed to different temperatures, thermal insulation is achieved because the air inside the chamber reaches a temperature between the outside and inside temperature. Here also, any tiny orifice that allows air to enter in the chamber reduces its insulating capacity.
Thermoacoustic windows having PVC framing have insulating advantages over windows having framing made of aluminum and similar materials. However, certain drawbacks in currently available systems of construction and installation of windows having PVC framing limit the use of thermoacoustic windows having PVC framing. The most advanced construction technology currently used over the world to form thermoacoustic windows having PVC framing involves the construction of a window frame by fusion welding plastic (PVC, vinyl) profiles designed to accommodate an insulating chamber which is made by glazing two glass panes separated by 20 to 25.4 millimeters. The technology uses a sealing material along the interior edge of two glass panes in order to bind the panes together. A device with desiccating material is inserted to absorb humidity and avoid condensation and fogging at low temperatures. In some cases, the air inside is replaced by an inert gas.
Although this technology achieves good contact with rubber-like seals, the insulating airtight chamber is not in tight contact with the window frame leaving tiny spaces and orifices between them. Additionally, the weight of this chamber, the largest of the whole window, rests entirely on the bottom side of the window frame. In some cases, a reinforcing metal is introduced in this profile.
It is an object of the present invention to provide an assembly system for thermoacoustic windows that renders airtight sealed unions in profiles that make the frame.
It is another object of the present invention to provide an assembly system for thermoacoustic windows that does not require a fusion-welding machine for assembling the windows.
It is still another object of the present invention to provide an assembly system for thermoacoustic windows that allows a user to make an insulating airtight chamber directly on the window frame.
SUMMARY OF THE INVENTION
The present invention provides a system to build a two glass pane thermoacoustic window that renders airtight sealed unions in profiles that make the frame, does not require a fusion-welding machine, and allows a user to make an insulating airtight chamber directly on the window frame. The system is based on a specially designed set of profiles and joints, and a valve. The frame unions are airtight sealed because the profiles and the joints are designed and manufactured to be inserted one into the other, with a precision and tolerance that forms a seal on the contact surfaces. The design additionally provides an adherence surface on the window frame which, using a binding material, seals the glass panes and frame to create an airtight chamber. With this new construction system, it is possible to achieve a sealing of unions such that the interior of the frame becomes an airtight duct. In turn, this hermetic condition makes possible to use a permanent valve to take out the air inside the frame and the airtight chamber between the glass panes.
Although the joints used to make airtight sealed unions have been used for other purposes, they are not used currently for construction of one or two glass pane windows. Furthermore, the joints have not been designed for window profiles and joints with such a purpose. The window profiles currently available in the marketplace do not include hermetic unions or designs to create an airtight chamber directly on the window frame, nor to make vacuum inside the frame at assembly or afterwards.
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patent: 3929186 (1975-12-01), Becker
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patent: 4166345 (1979-09-01), Becker
patent: 4723388 (1988-02-01), Zieg
patent: 4791762 (1988-12-01), Hwang
patent: 83307511 (1983-12-01), None
patent: PCT/US97/21752 (1997-11-01), None
Baker & McKenzie
Kent Christopher T.
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