Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having a component wherein a constituent is liquid...
Reexamination Certificate
2001-03-20
2003-07-29
Zirker, Daniel (Department: 1771)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having a component wherein a constituent is liquid...
C428S292400, C428S107000, C428S109000, C428S297400, C428S314400, C428S318400
Reexamination Certificate
active
06599621
ABSTRACT:
FIELD OF THE INVENTION
This invention relates generally to structural panels for building construction and is particularly directed to high strength structural insulated panels which are highly resistant to bending or bowing such as caused by exposure to moisture or changes in humidity.
BACKGROUND OF THE INVENTION
Structural insulated panels are gaining increasing acceptance in building construction in replacing the conventional combination of drywall sheets and rolls of fiberglass insulation. The typical structural insulated panel includes an inner insulating core such as of plastic foam and at least one outer facing comprised of a rigid material such as gypsum or cementous composite, oriented strand board (OSB), or an agricultural board product such as strawboard. While a facing of gypsum or cementous composite is highly resistant to moisture, OSB or an agricultural board product is sensitive to changes in humidity. For example, OSB expands, or swells, when exposed to water or increased humidity. This OSB expansion is irreversible as the OSB does not return to its original size or shape with a return to lower humidities. This causes a bowing, or warping, of the structural insulated panel. If this occurs prior to installation, the structural insulated panel is generally not usable and must be discarded. If this occurs after the structural insulated panel has been installed in a building structure, the panel may develop cracks, become detached from the underlying support structure, or may result in a distorted wall or ceiling structure requiring panel replacement.
The present invention addresses the aforementioned limitations of the prior art by providing a high strength structural insulated panel including an inner insulating core with a gypsum fiberboard facing disposed on a first surface of the insulating core and an OSB facing incorporating a polyisocyanurate or urethane resin disposed on a second opposed surface which renders the panel highly resistant to water and changes in humidity.
OBJECTS AND SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide a high strength, lightweight structural insulated panel which is highly resistant to fire, insects and the environment, particularly to water and changes in humidity.
It is another object of the present invention to provide a structural insulated panel which can be machined on site and is easily adapted for a particular installation.
It is a further object of the present invention to provide a structural insulated panel for building construction which has high dimensional stability over a wide range of various environmental parameters.
The present invention contemplates an insulated structural panel comprising a generally flat insulating core having first and second opposed generally planar surfaces; a first outer facing attached to the first surface of the insulating core and comprised of oriented strand board incorporating a polyisocyanurate or urethane resin; and a second outer facing attached the second surface of the insulating core and comprised of gypsum fiberboard incorporating fiber reinforcing particles.
REFERENCES:
patent: 919057 (1909-03-01), Moore
patent: 1250594 (1917-12-01), Knapp
patent: 1474657 (1923-11-01), Walper
patent: 2111922 (1938-03-01), Borkenstein
patent: 2875478 (1959-03-01), Andre
patent: 3496058 (1970-02-01), Schroter et al.
patent: 3557840 (1971-01-01), Maybee
patent: 3654053 (1972-04-01), Toedter
patent: 3692620 (1972-09-01), Schmidt et al.
patent: 3731449 (1973-05-01), Kephart, Jr.
patent: 3753843 (1973-08-01), Hutchison
patent: 3857217 (1974-12-01), Reps
patent: 3911554 (1975-10-01), Ford
patent: 4004387 (1977-01-01), Ellingson
patent: 4024684 (1977-05-01), Homgren
patent: 4032689 (1977-06-01), Johnson et al.
patent: 4037377 (1977-07-01), Howell et al.
patent: 4051641 (1977-10-01), Elliott
patent: 4068437 (1978-01-01), Byxbe et al.
patent: 4147004 (1979-04-01), Day et al.
patent: 4169688 (1979-10-01), Toshio
patent: 4170859 (1979-10-01), Counihan
patent: 4283898 (1981-08-01), Claver
patent: 4402170 (1983-09-01), Seidner
patent: 4430833 (1984-02-01), Balzer et al.
patent: 4443988 (1984-04-01), Coutu, Sr.
patent: 4471591 (1984-09-01), Jamison
patent: 4510019 (1985-04-01), Bartelloni
patent: 4514532 (1985-04-01), Hsu et al.
patent: 4671038 (1987-06-01), Porter
patent: 4704837 (1987-11-01), Menchetti et al.
patent: 4726973 (1988-02-01), Thompson
patent: 4765105 (1988-08-01), Tissington et al.
patent: 4786547 (1988-11-01), St-Michel
patent: 4802837 (1989-02-01), Held
patent: 4856244 (1989-08-01), Clapp
patent: 4865912 (1989-09-01), Mirtsumata
patent: 4932171 (1990-06-01), Beattie
patent: 4961298 (1990-10-01), Nogradi
patent: 4964933 (1990-10-01), Hata et al.
patent: 5058333 (1991-10-01), Schwartz
patent: 5062250 (1991-11-01), Buzzella
patent: 5081810 (1992-01-01), Emmert
patent: 5140086 (1992-08-01), Hunter et al.
patent: 5194323 (1993-03-01), Savoy
patent: 5224315 (1993-07-01), Winter, IV
patent: 5269109 (1993-12-01), Gulur
patent: 5345738 (1994-09-01), Dimakis
patent: 5428929 (1995-07-01), Reese
patent: 5433050 (1995-07-01), Wilson et al.
patent: 5497589 (1996-03-01), Porter
patent: 5509242 (1996-04-01), Rechsteiner et al.
patent: 5519971 (1996-05-01), Ramirez
patent: 5573829 (1996-11-01), Decker
patent: 5628158 (1997-05-01), Porter
patent: 5638651 (1997-06-01), Ford
patent: 5641553 (1997-06-01), Tingley
patent: 5755068 (1998-05-01), Ormiston
patent: 5842314 (1998-12-01), Porter
patent: 5950389 (1999-09-01), Porter
patent: 5953883 (1999-09-01), Ojala
patent: 6136408 (2000-10-01), Radcliffe et al.
patent: 6240704 (2001-06-01), Porter
Chang Victor S.
Zirker Daniel
LandOfFree
High strength structural insulated panel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High strength structural insulated panel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High strength structural insulated panel will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3079555