Static structures (e.g. – buildings) – Composite prefabricated panel including adjunctive means – Sandwich or hollow with sheet-like facing members
Reexamination Certificate
1999-06-17
2001-07-24
Kent, Christopher T. (Department: 3635)
Static structures (e.g., buildings)
Composite prefabricated panel including adjunctive means
Sandwich or hollow with sheet-like facing members
C052S309110, C052S309120, C052S309700
Reexamination Certificate
active
06263638
ABSTRACT:
BACKGROUND OF THE INVENTION
Precast insulated concrete wall panels are well known in the art and offer a number of advantages for residential and commercial building construction. These advantages include shorter construction schedules, improved thermal resistance, improved quality control, and enhanced durability. However, conventional concrete wall panels are heavy, thus increasing the cost of transporting the panels from the precasting plant to the job site. The large weight of the panels often times requires multiple loads to be delivered to the job site, thereby resulting in potential delays during loading, transportation, and unloading. The large weight also requires the use of an expensive, heavy crane for panel installation.
Insulated concrete wall panels with cavities are also known in the art. These wall panels include inner and outer concrete layers, or wythes, with an internal insulation layer and an air gap provided between the concrete layers, so as to be lighter weight than solid walls of the same thickness. Such hollow insulated wall panels are made by separate castings of the first and second concrete layers, with the first concrete layer being completely cured or hardened before the second concrete layer is poured. This construction method involves long delays and increased costs for the production process.
Furthermore, the prior art concrete wall panels are normally butted side to side with additional panels so as to form a wall structure. However, such a butt joint is not interlocked and thereby complicates the assembly process. In addition, the prior art concrete wall panels are constructed using metallic connectors with high thermal conductives.
Accordingly, a primary objective of the present invention is the provision of an improved method of forming concrete wall panels.
Another objective of the present invention is the provision of an improved hollow concrete wall panel.
A further objective of the present invention is the provision of a lightweight insulated wall panel useful in forming an integral concrete wall structure.
A further objective of the present invention is the provision of a hollow concrete wall panel wherein the inner and outer concrete layers are cured substantially simultaneously.
Another objective of the present invention is the provision of precast wall panels which can be loaded, transported, unloaded, and assembled at the construction site using lightweight construction equipment.
Another objective of the present invention is an improved wall system that can be quickly and easily assembled at the construction site.
Another objective of the present invention is the provision of a quick and easy method of a precasting concrete wall panels.
A still further objective of the present invention is the provision of an improved concrete wall panel with a high degree of thermal insulation.
A further objective of the present invention is an improved concrete wall panel which is economical to manufacture and durable and safe in use.
These and other objectives become apparent from the following description of the invention.
SUMMARY OF THE INVENTION
The precast concrete wall panels of the present invention include inner and outer concrete layers, an internal insulation layer, and an air gap between the insulation layer and one of the concrete layers. In constructing the wall panels, the first concrete layer is poured into a form. The insulation layer is supported in a spaced relation above the first concrete layer, and the second concrete layer is poured on top of the insulation layer while the first concrete layer is still wet. Thus, the first and second concrete layers cure substantially simultaneously. A plurality of connectors or rods extend through the foam with opposite ends embedded in the first and second concrete layers. An enlarged flange on each connector supports the insulation layer above the first concrete layer to provide an air gap therebetween.
After the concrete layers have hardened, the wall panels can be lifted and installed in a vertical orientation on footings or another base. The edges of the panels are contoured, so as to matingly engage with a corresponding edge on an adjacent panel, thereby providing an interlocking joint between adjacent panels. The panels can be assembled adjacent one another and on top of one another so as to provide a form which becomes an integral part of the wall structure. The assembled panels create a continuous form, with the air gap in the panels being filled with concrete.
The upper edges of the inner concrete layer may include a notch to receive a floor or roof joist. The joists are thus supported by the inner concrete layer of the wall panels without the need for a ledger beam attached to the inside face of the wall panels. The thickness of the insulation layer can be determined based upon thermal insulation requirements as well as upon mechanical requirements for the insulation material acting as a concrete form. Where required for mechanical purposes, enhanced insulation material may be used incorporating fiber reinforcement, surface laminations, increased density or combinations thereof.
REFERENCES:
patent: 1958049 (1934-05-01), Kleitz
patent: 2412744 (1946-12-01), Nelson
patent: 2645929 (1953-07-01), Jones
patent: 2653469 (1953-09-01), Callan
patent: 2775018 (1956-12-01), McLaughlin
patent: 3274680 (1966-09-01), Cruse
patent: 3426494 (1969-02-01), Hala
patent: 3750355 (1973-08-01), Blum
patent: 3927857 (1975-12-01), Lovisa et al.
patent: 3965635 (1976-06-01), Renkert
patent: 4052831 (1977-10-01), Roberts et al.
patent: 4109436 (1978-08-01), Berloty
patent: 4283896 (1981-08-01), Fricker et al.
patent: 4290246 (1981-09-01), Hilsey
patent: 4329821 (1982-05-01), Long et al.
patent: 4348847 (1982-09-01), Jukes
patent: 4348848 (1982-09-01), Denzer
patent: 4393635 (1983-07-01), Long
patent: 4489530 (1984-12-01), Chang
patent: 4545163 (1985-10-01), Asselin
patent: 4624089 (1986-11-01), Dunker
patent: 4632796 (1986-12-01), Moulet
patent: 4669240 (1987-06-01), Amormino
patent: 4702053 (1987-10-01), Hibbard
patent: 4805366 (1989-02-01), Long
patent: 4829733 (1989-05-01), Long
patent: 4974381 (1990-12-01), Marks
patent: 5519973 (1996-05-01), Keith et al.
patent: 5588272 (1996-12-01), Haponski
patent: 5596853 (1997-01-01), Blaney et al.
patent: 5671574 (1997-09-01), Long
patent: 5673525 (1997-10-01), Keith et al.
patent: 5697189 (1997-12-01), Miller et al.
patent: 5822939 (1998-10-01), Haener
patent: 5890337 (1999-04-01), Boeshart
patent: 5927032 (1999-07-01), Record
patent: 5987834 (1999-11-01), Keith et al.
patent: 1 683 498 (1967-09-01), None
patent: 2 360 723 (1977-07-01), None
patent: 2 670 523 (1990-12-01), None
Composite Technologies Corporation
Kent Christopher T.
Thissell Jennifer I.
Zarely, McKee, Thomte, Voorhees & Sease
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