Building panel and method of fabrication
First Claim
1. A building panel for exterior use of laminated construction comprising:
- (a) a flat sheet of hardboard having a four-sided polygonal configuration and first and second planar surfaces;
(b) a flat sheet of high temperature thermoplastic material bonded to said first planar surface of the hardboard and being substantially coextensive therewith to provide an outer planar surface;
(c) said laminated hardboard sheet and thermoplastic sheet having first edge portion and an opposite integral offset portion extending in a plane substantially normal to the outer planar surface of the thermoplastic sheet and terminating in a second end edge portion; and
(d) a rigid layer of plastic material having insulating properties bonded to the second planar surface of the hardboard.
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Accused Products
Abstract
A building panel of laminated construction having a flat, four-sided polygonal shaped hardboard sheet to one surface of which is bonded a thin, flat, plastic sheet having weather resistant properties and a rigid foam plastic layer having heat insulating properties bonded to the other surface of the hardboard sheet. The foam plastic layer has a tapered shape in cross section with the taper extending from a lower edge portion to a narrow upper edge portion. The hardboard and plastic sheets have an integral flanged lower edge portion in partial abutment with the lower edge portion of the foam plastic layer. A notch in the lower edge portion of the foam plastic layer adjacent the flanged lower edge portion, which notch is constructed and arranged to receive the upper edge portion of an adjacent lower building panel and thereby anchor the lower edge portion of the building panel and provide a seal at the joint.
The method of fabrication includes the steps of forming the integral flanged lower edge portion by providing a V-shaped groove spaced from and parallel to the lower edge of the hardboard to a depth substantially at the surface of the plastic sheet without penetration of the latter and folding along the apex of the groove so as to bring the surfaces of the groove into abutment the plastic sheet at the apex serving as a hinge.
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Citations
12 Claims
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1. A building panel for exterior use of laminated construction comprising:
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(a) a flat sheet of hardboard having a four-sided polygonal configuration and first and second planar surfaces; (b) a flat sheet of high temperature thermoplastic material bonded to said first planar surface of the hardboard and being substantially coextensive therewith to provide an outer planar surface; (c) said laminated hardboard sheet and thermoplastic sheet having first edge portion and an opposite integral offset portion extending in a plane substantially normal to the outer planar surface of the thermoplastic sheet and terminating in a second end edge portion; and (d) a rigid layer of plastic material having insulating properties bonded to the second planar surface of the hardboard. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A building panel of laminated construction for exterior use, said panel adapted to be mounted on a support structure, comprising:
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(a) a flat sheet of hardboard having a four-sided polygonal configuration with an upper and lower edge portion; (b) a flat sheet of high temperature thermoplastic material bonded to one surface of the hardboard and being substantially co-extensive therewith to form a first outer weather resistant surface; (c) a rigid layer of foam plastic material having thermal insulating properties bonded to another surface of the hardboard opposite from the flat sheet of thermoplastic material and having upper and lower edge portions and providing a second outer surface substantially co-extensive with the hardboard sheet; (d) said layer of foam plastic having, in cross-section, a tapered configuration with said outer weather resistant surface of said flat sheet of thermoplastic material and tapering from the lower edge portion thereof to the upper edge portion thereof; (e) a notch in and co-extensive with said lower edge portion of said layer of foam plastic; and (f) said notch being of a size to receive the upper edge portion of another building panel and having a configuration in cross-section to form with said second outer surface of the rigid layer of foam plastic material a tab having a camming surface which coacts with the upper edge portion of another building panel to urge the tab against the support structure. - View Dependent Claims (8, 9, 10)
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11. A building panel of laminated construction for exterior use in combination with a plurality of fasteners each of which has a shank portion and a head portion of larger peripheral dimensions than the shank portion for securing the building panel to support structure, the panel comprising:
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(a) a flat sheet of hardboard having a four-sided polygonal configuration comprising first and second planar surfaces and an upper, lower and side edge portions; (b) a flat sheet of high temperature thermoplastic material bonded to said first planar surface of the hardboard and substantially co-extensive therewith; (c) a rigid layer of foam plastic material having thermal insulating properties bonded to the second planar surface of the hardboard; (d) a plurality of spaced openings in said hardboard and thermoplastic material each of which is aligned to receive a fastener; and (e) each of said aligned openings being elongated and having one side thereof substantially arcuate in shape and dimensioned to allow the head portion of an associated fastener to pass therethrough when the building panel is removed from and replaced on the support structure. - View Dependent Claims (12)
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Specification