Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Reexamination Certificate
1998-09-29
2001-03-27
Dye, Rena L. (Department: 1772)
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
C428S132000, C428S136000, C428S116000, C428S117000, C428S118000, C428S596000, C428S597000, C052S791100, C052S673000, C052S670000, C052S675000, C052S789100
Reexamination Certificate
active
06207256
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a space truss composite panel that lends itself to industrial production.
The space truss composite panel is utilized as a formwork for poured-concrete construction in construction work, a half precast concrete board, a temporary deck, a scaffold board, a pallet for transportation, and the like. Further, the space truss composite panel is utilized also as various panels and boards for forming the structures or surfaces of roofs in buildings, floors, and fittings. Still further, the space truss composite panel is utilized also as flat- and curved-surface construction in fences, furniture, containers, the bodies of vehicles, the hulls of vessels, the hulls of airplanes, and the like.
2. Description of the Related Art
A conventional space truss framework has a construction in which one side of the truss is formed as a single member by connecting a plurality of members with each other through a connector at a node of the truss, each of the members being connected by means of welding, bolts, screws, or the like.
When the space truss framework is decreased in height, the number of nodes thereof drastically increase in proportion to the second power of its size. Due to this, from an economical point of view, it is impossible to produce the space truss framework which is low in height. A commonly-constructed space truss framework has a height of more than or equal to 300 mm. Up to this time, any space truss framework with a height of less than 300 mm has not been produced yet. Particularly, since it is impossible to produce a space truss with a height of from several to several tens of millimeters on a large-scale basis, any space truss composite panel has not been produced yet.
SUMMARY OF THE INVENTION
Although a space truss framework is a mechanically advantageous structural framework, it is difficult to construct. Consequently, it is an object of the present invention to provide a space truss composite panel, which has a predetermined structural strength and is capable of being efficiently and economically produced.
According to a first aspect of the present invention, the above object of the invention is accomplished by providing:
A space truss composite panel having a construction in which a sheet provided with a series of slits is formed into a space framework through a press working, the space framework being provided with a series of polygonal unit lattices in one of its opposite sides and a series of polygonal pyramids in the other of the opposite sides, wherein each of the polygonal unit lattices has an intersection of its adjacent sides connected with a ridgeline portion and a flat vertex portion of each of the polygonal pyramids, and the space framework has at least one of its opposite sides connected with a board-like member.
According to a second aspect of the present invention, the above object of the invention is accomplished by providing:
A space truss composite panel having a construction in which a lattice element is provided with a series of triangular unit lattices each of which has a basal side portion, wherein the lattice element is subjected to a plurality of alternating bending operations along a plurality of parallel lattice lines each of which is parallel to the basal side portion, so that a plurality of alternating ridge and trough portions are formed in the lattice element, six adjacent triangles share four opposite side portions with each other, the opposite side portions having their front-end portions connected with each other on the lattice lines, whereby a corrugated lattice-like space core is formed in a manner such that each of the opposite side portions forms a ridgeline portion of a quadrilateral pyramid, the space core having at least one of its opposite sides connected with a board-like member.
According to a third aspect of the present invention, the above object of the invention is accomplished by providing:
A space truss composite panel having a construction in which a lattice element comprises a series of quadrilateral or hexagonal unit lattices, and is subjected to a bending operation at each of intersections or sides of the unit lattices, whereby the lattice element is formed into a corrugated lattice-like space core which has at least one of its opposite sides connected with a board-like member.
According to a fourth aspect of the present invention, the above object of the invention is accomplished by providing:
The space truss composite panel as set forth in the third aspect of the present invention, wherein:
the lattice element comprising a series of the quadrilateral or the hexagonal unit lattices is subjected to alternating bending operations at a plurality of parallel diagonal lines each of which is parallel to a diagonal line of each of the quadrilateral or the hexagonal unit lattices, so that alternating ridge and trough portions are formed in the lattice element, whereby the lattice element is formed into the corrugated lattice-like space core in a manner such that four side portions shared by adjacent four quadrilaterals, or three side portions shared by adjacent three hexagons have their front-end portions connected with each other on the parallel diagonal lines, and that each of the side portions forms each of ridgeline portions of quadrilateral pyramids or of triangular pyramids.
According to a fifth aspect of the present invention, the above object of the invention is accomplished by providing:
A space truss composite panel having a construction in which a straight member is formed into a corrugated member through a bending operation in a manner such that the corrugated member has its oblique portions alternately reversed in inclination, wherein the corrugated member has its corruaged surface disposed vertically, and a pair of the corrugated members which are different in direction from each other are so disposed as to intersect with each other at their bent portions to form intersections, whereby a corrugated lattice-like space core is formed in a manner such that four of the oblique portions adjacent to each of the intersections form ridgeline portions of a quadrilateral pyramid, the space core having each of its opposite surfaces connected with a board-like member.
According to a sixth aspect of the present invention, the above object of the invention is accomplished by providing:
A space truss composite panel having a construction in which a straight member is formed into a corrugated member through a bending operation in a manner such that the corrugated member has its oblique portions alternately reversed in inclination, wherein the corrugated member has its corruaged surface disposed vertically, and a pair of the corrugated members which are different in direction from each other are so disposed as to intersect with each other at their bent portions to form intersections, whereby a corrugated lattice-like space core comprised of a plurality of corrugated unit lattices is formed in a manner such that four of the oblique portions adjacent to each of the intersections form ridgeline portions of a quadrilateral pyramid, wherein at least one of additional straight members which are different in direction from each other is disposed in a manner such that the additional straight member connects vertexes of the corrugated unit lattices, the vertexes lying on polygonal lines of the corrugated unit lattices, whereby all the intersections of the additional straight member are connected with the space core.
According to a seventh aspect of the present invention, the above object of the invention is accomplished by providing:
A space truss composite panel having a construction in which a straight member is formed into a corrugated member through a bending operation in a manner such that the corrugated member has its oblique portions alternately reversed in inclination, wherein the corrugated member has its corruaged surface disposed vertically, and a pair of the corrugated members which are different in direction from each other are so disposed
Dye Rena L.
Iwasa S.
Lee Laura L.
Smolowitz Martin
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