US4255915A — Process for producing prefabricated panels and tr…

Claim 1

Independent Claim 299 words

A process for producing prefabricated panels of the kind having a peripheral metallic frame (1), reinforced with a metallic structure (10) and/or a metallic net (13), said panel having at least a layer (15) of cement mixture or other material, characterized by producing a square or rectangular frame (1), the sides of which are formed by shaped metallic sheet, the cross section of each side having the form of an isosceles right-angled triangle, said sides being oriented so that a cathetus of the triangle constitutes the inner face (2) of the frame, the other cathetus constitutes the back face (3) of the frame and the hypotenuse constitutes the frame outer face (4) inclined at 45° with respect to the plane of the same frame, while the acute angle between the face (2) and the outer fare (4) constitutes a peripheral border (9) on the front of the frame; by reinforcing the frame by parallel metallic profiles (10), the ends of which are anchored to the opposed sides of the frame (1); by cutting one or more of said profiles for delimiting an aperture for a door or a window, said profiles (10) having a flange about flush to the back face (3) of the frame and the web protruding to a determined level into the space delimited by the frame; by laying a reinforcing metallic net (13) immediately under the webs of said parallel profiles (10); by disposing the frame so reinforced on a resting plane, resting it with the acute angle peripheral border (9), and by pouring a cement mixture into the frame to form a main layer (15), the thickness of which, measured from said resting plane, is sufficient to merge said metallic reinforced net and the lower portion of the webs of the reinforcing profiles (10).

Claim 2

Dependent Claim 299 words

A process for producing prefabricated panels of the kind having a peripheral metallic frame (1), reinforced with a metallic structure (10) and/or a metallic net (13), said panel having at least a layer (15) of cement mixture or other material, characterized by producing a square or rectangular frame (1), the sides of which are formed by shaped metallic sheet, the cross section of each side having the form of an isosceles right-angled triangle, said sides being oriented so that a cathetus of the triangle constitutes the inner face (2) of the frame, the other cathetus constitutes the back face (3) of the frame and the hypotenuse constitutes the frame outer face (4) inclined at 45° with respect to the plane of the same frame, while the acute angle between the face (2) and the outer fare (4) constitutes a peripheral border (9) on the front of the frame; by reinforcing the frame by parallel metallic profiles (10), the ends of which are anchored to the opposed sides of the frame (1); by cutting one or more of said profiles for delimiting an aperture for a door or a window, said profiles (10) having a flange about flush to the back face (3) of the frame and the web protruding to a determined level into the space delimited by the frame; by laying a reinforcing metallic net (13) immediately under the webs of said parallel profiles (10); by disposing the frame so reinforced on a resting plane, resting it with the acute angle peripheral border (9), and by pouring a cement mixture into the frame to form a main layer (15), the thickness of which, measured from said resting plane, is sufficient to merge said metallic reinforced net and the lower portion of the webs of the reinforcing profiles (10).

Claim 3

Dependent Claim 23 words

A process as claimed in claim 1, wherein the isosceles right-angled triangle cross section profiles are produced by shaping metallic ribbon or ribbons.

Claim 4

Dependent Claim 59 words

A process as claimed in claim 1, wherein on the shaping of the profiles having an isosceles right-angled triangle cross section, a flat continuous projection (8) is produced on the inner face (2) of the frame at the same level of the reinforced net (13), so as the edges of said net are anchored on said flat continuous projection.

Claim 5

Dependent Claim 52 words

A process as claimed in claim 1, wherein for the production of panels having a lining on the front face, said lining is laid on the resting plane (14) and around said lining is disposed the reinforced frame so that the pouring of the cement mixture is carried out over said lining.

Claim 6

Dependent Claim 95 words

A process as claimed in claim 1, wherein panels are produced lined with tiles, the tiles being arranged on a support plane (16) provided with ranged seats into which the tiles are disposed and registered with their front face directed toward the bottom of the seats, said support plane being disposed on the horizontal resting plane and therearound the reinforced frame is disposed, so as the main cement mixture layer is laid into the frame and over the back faces of the tiles, causing the adherence of the tiles to the main cement mixture layer.

Claim 7

Dependent Claim 54 words

A process as claimed in claim 5, wherein the support plane for the tiles is formed by a mat (17) of resilient material, such as silicon resin, provided with two series of parallel ribs (18) crossing together to form square or rectangular seats for accomodating the tiles, said ribs being of convex cross section.

Claim 8

Dependent Claim 123 words

A process as claimed in claim 5, wherein the support plane is constituted by a rigid structure (26) formed by profiles, preferably of extruded aluminium, a first series of said profiles forming the peripheral frame and a series of parallel bars being constituted by hollow profiles (27) having square or rectangular cross section, provided on the upper face with T-cross section profiles (29) having their flange resting on said upper face and the web directed upwardly from said upper face, and a second series of profiles (31) having a T-cross section, being disposed perpendicularly to the first series, and anchored to the T-cross section profiles (29) of the first series, to form a grating generating square or rectangular seats for accommodating respective tiles.

Claim 9

Dependent Claim 65 words

A process as claimed in claim 1, wherein the cement mixture, used for composing the main layer of the panel, has the following composition: crusher sand finely riddled gravel (3 to 10 mm) white cement (untacky) cellulose-derivative styrol-acrylic copolymer in acqueous dispersion at 90% water the percentage being variable into technically acceptable limits and with the possibility to eliminate at least one of the components.

Claim 10

Dependent Claim 27 words

A process as claimed in claim 1, consisting in covering the empty space (20) on the back of the panel by means of a covering plate (21).

Claim 11

Dependent Claim 20 words

A process as claimed in claim 1, wherein the empty space 20 is filled with light or insulating material (22).

Claim 12

Dependent Claim 64 words

A process for forming tridimensional elements characterized by connecting at right angles the panels produced in claim 1, facing the adjacent panels along the outer inclined faces (4), the panels being oriented so as the front faces of the same are oriented inside the right angle formed and by fixing the juxtaposed sides of the respective frames using any connecting means, preferably by welding.

Claim 13

Dependent Claim 43 words

A process as claimed in claim 11, wherein the sides of the respective panels facing each other along the outer inclined face are connected together by bending a continuous edge (5) of one profile over the juxtaposed profile and connecting it by welding.

Claim 14

Dependent Claim 215 words

A prefabricated panel for building characterized by a rectangular or square peripheral frame (1), the sides of which are of shaped sheet and have an isosceles right-angled triangle cross section, oriented so as one of the cathetus constitutes the inner face (2) of the frame, the other cathetus constitutes the back face (3) of the frame and the hypotenuse constitutes the outer face (4) inclined at 45° with respect to the plane of the frame, while on the front face the frame is delimited by a peripheral corner (9), corresponding to the acute angle adjacent to the cathetus forming the inner face, the width of the frame being determined by the cathetus forming the inner face (2), by a reinforcing armature reinforcing said frame constituted by parallel profiles 10, the ends of which are anchored on two opposed sides of the frame and having a flange (10') flush to the common plane (3) of the frame, by a reinforcing metallic net disposed under said profiles (10), by a main cement mixture layer (15), the thickness of which, measured from said acute angle corner (9) is sufficient to incorporate said metallic net and a portion of the webs of the profiles (10), so as on the back of the panel an empty space (21) is delimited.

Claim 15

Dependent Claim 215 words

A prefabricated panel for building characterized by a rectangular or square peripheral frame (1), the sides of which are of shaped sheet and have an isosceles right-angled triangle cross section, oriented so as one of the cathetus constitutes the inner face (2) of the frame, the other cathetus constitutes the back face (3) of the frame and the hypotenuse constitutes the outer face (4) inclined at 45° with respect to the plane of the frame, while on the front face the frame is delimited by a peripheral corner (9), corresponding to the acute angle adjacent to the cathetus forming the inner face, the width of the frame being determined by the cathetus forming the inner face (2), by a reinforcing armature reinforcing said frame constituted by parallel profiles 10, the ends of which are anchored on two opposed sides of the frame and having a flange (10') flush to the common plane (3) of the frame, by a reinforcing metallic net disposed under said profiles (10), by a main cement mixture layer (15), the thickness of which, measured from said acute angle corner (9) is sufficient to incorporate said metallic net and a portion of the webs of the profiles (10), so as on the back of the panel an empty space (21) is delimited.

Claim 16

Dependent Claim 44 words

A prefabricated panel as claimed in claim 13, characterized in that it is provided on the front face with a lining, constituted by a mixture layer, a laminated material or tiles and the like, incorporated in the cement mixture of the main layer (15).

Claim 17

Dependent Claim 39 words

A prefabricated panel as claimed in claim 13, characterized in that on the inner face of the frame is provided a flat continuous projection (8) constituting a means for resting and anchoring the peripheral edges of the metallic net.

Claim 18

Dependent Claim 26 words

A prefabricated panel as claimed in claim 13, characterized in that the cement mixture layer incorporating the metallic net is non-flammable, colloidal, resilient, waterproof and water-repellent.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1984-03-16	1984-09-15	1985-03-17	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1988-03-16	1988-09-15	1989-03-17	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1992-03-16	1992-09-15	1993-03-17	$7700.00	Window Closed / Lapsed

Process for producing prefabricated panels and tridimensional elements for building and products obtained from said process

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