Patents by Inventor Piero Cretti
Piero Cretti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8936453Abstract: An apparatus for continuously forming a continuous element made of expanded plastic material comprises: a loading section of a mass of granules made of expandable plastic material; a sintering section of the continuous element made of expanded plastic material extending downstream of the loading section; a stabilizing section of the continuous element made of expanded plastic material extending downstream of the sintering section; a forming tunnel extending along the sintering and stabilizing sections and defined between a pair of lateral walls and a pair of gas permeable conveyor belts, supported by respective supporting tracks. Further, at least one of the supporting tracks of the gas permeable conveyor belts comprises at least one portion extending in the sintering section and angularly tiltable with respect to a transversal centerline plane (?) of the forming tunnel for varying the height of the tunnel in a longitudinal direction.Type: GrantFiled: June 25, 2008Date of Patent: January 20, 2015Assignee: Gilanberry Trading Ltd.Inventor: Piero Cretti
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Publication number: 20120167521Abstract: The invention is directed to a prefabricated stair formwork structure (1) for making a stair flight, comprising: a first space (A) for containing a concrete cast defined by two longitudinal beam elements (11, 12), arranged parallel to one another, and two transversal beam elements (13,14), also arranged parallel to one another and each coupled with both said longitudinal beam elements (11, 12) at their respective ends; a plurality of shaped elements (15) each defining a second containment space (S) for a concrete cast of corresponding steps, said shaped elements (15) being fixed in succession above said at least two longitudinal beam elements (11, 12); an element (16) for closing the bottom of the formwork structure (1), fixed to said longitudinal and/or transversal beam elements on the opposite side with respect to said shaped elements (15); and a reinforcement structure (C) of the concrete housed in said first containment space (A).Type: ApplicationFiled: June 22, 2009Publication date: July 5, 2012Applicant: PLASTEDIL S.A.Inventor: Piero Cretti
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Patent number: 8006450Abstract: A floor structure (1) of the type having “crossed reinforcement rods” is described comprising: a) a plurality of composite construction elements (2) arranged side by side and comprising: a1) an elongated body (3) made of expanded plastic material provided with an upper face (3a); a2) at least one reinforcing section bar (4) longitudinally extending in the elongated body (3) and having an upper portion (4c) protruding from the upper face (3a) of the body (3); b) a substantially reticular reinforcement metal structure (10) of a concrete casting (9), supported by the upper portion (4c) of the aforementioned at least one reinforcing section bar (4) at a predetermined distance from the upper face (3a) of the elongated body (3) made of expanded plastic material. Advantageously, the floor structure (1) exhibits lightness and self-supporting characteristics and allows to achieve a substantial reduction of the labor and costs for its manufacture.Type: GrantFiled: May 31, 2005Date of Patent: August 30, 2011Assignee: Plastedil S.A.Inventor: Piero Cretti
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Patent number: 7954291Abstract: A composite for constructing concrete floors is completely factory assembled and comprises a body of expanded plastic having at least two parallel channels, open on the upper surface of the panel, extending the length of the article, adapted to be filled with concrete. A steel reinforcement bar fabric is installed into each channel, which may comprise at least two parallel steel bars connected by cross bars. At least some cross bars extend beyond a lowest reinforcement fabric bar to provide spikes long enough to pass through the plastic bottom and protrude therefrom.Type: GrantFiled: June 19, 2008Date of Patent: June 7, 2011Assignee: Plastedil S.A.Inventor: Piero Cretti
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Patent number: 7814719Abstract: A self-supporting construction element (1) is described, comprising: a) an elongated body (2) made of expanded plastic material; substantially parallelepipedic and provided with respectively lower (8) and upper (9) opposite faces; b) at least one reinforcing section bar (12, 13) transversely extending in the body (2) between the faces (8, 9); wherein the elongated body (2) made of expanded plastic material is provided with at least one recess (14, 27) open at an upper side for housing a concrete casting (15) and wherein the reinforcing section bar (12, 13) extends at least in part in the aforementioned at least one recess (14, 27). Advantageously, the construction element (1) exhibits both optimum self-supporting characteristics and a good fire resistance in case of fire.Type: GrantFiled: June 14, 2005Date of Patent: October 19, 2010Assignee: Plastedil S.A.Inventor: Piero Cretti
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Patent number: 7784235Abstract: A composite construction element (2) particularly useful for manufacturing building floors, comprises: a) an elongated body (3) made of expanded plastic material, provided with at least one longitudinal channel (4) open on the upper side for receiving a concrete casting (5); b) a reinforcement metal structure (11) of the casting (5), housed in the longitudinal channel (4), associated to the elongated body (3) and having opposite free ends (12) protruding from longitudinally opposite parts of the elongated body (3) for a portion of predetermined length. Advantageously, the composite construction element (2) possesses optimum load bearing characteristics, lightness and flexibility of use.Type: GrantFiled: May 10, 2005Date of Patent: August 31, 2010Assignee: Plastedil S.A.Inventor: Piero Cretti
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Publication number: 20100159199Abstract: An apparatus (1) for continuously forming a continuous element (2) made of expanded plastic material comprises: a loading section (8) of a loose mass of granules made of expandable plastic material; a sintering section (16) of the continuous element (2) made of expanded plastic material extending downstream of the loading section (8); a stabilizing section (17) of the continuous element (2) made of expanded plastic material extending downstream of the sintering section (16); a forming runnel (18) extending along the sintering (16) and stabilizing (17) sections and defined between a pair of lateral walls (19, 20) and a pair of gas permeable conveyor belts (21, 22), respectively lower and upper, supported by respective supporting tracks (23, 24).Type: ApplicationFiled: June 25, 2008Publication date: June 24, 2010Applicant: GILANBERRY TRADING LTD.Inventor: Piero Cretti
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Publication number: 20080313990Abstract: A composite for constructing concrete floors is completely factory assembled and comprises a body of expanded plastic having at least two parallel channels, open on the upper surface of the panel, extending the length of the article, adapted to be filled with concrete. A steel reinforcement bar fabric is installed into each channel, which may comprise at least two parallel steel bars connected by cross bars. At least some cross bars extend beyond a lowest reinforcement fabric bar to provide spikes long enough to pass through the plastic bottom and protrude therefrom.Type: ApplicationFiled: June 19, 2008Publication date: December 25, 2008Applicant: Plastedil S.A.Inventor: Piero Cretti
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Publication number: 20070039266Abstract: A composite construction element (1) is described including a body (2) made of expanded plastics material provided with opposite faces (8, 9) and at least one reinforcing section bar (10, 11), transversely extending in the body (2) between the faces (8, 9) and incorporated in the expanded plastic materials. The reinforcing section bar (10, 11) includes a central portion (12) having at least one fin (13, 14) extending in a cantilevered fashion from the same and forming a longitudinal edge (15, 15b) therewith and a plurality of openings (16, 17) at least partially formed in the central portion (12) of the section bar (10, 11) at the longitudinal edge (15a, 15b). Advantageously, the construction element (1) has improved self-supporting characteristics and improved characteristics of resistance to bending load which it is subjected to during installation.Type: ApplicationFiled: May 10, 2004Publication date: February 22, 2007Inventor: Piero Cretti
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Publication number: 20060185280Abstract: A composite construction element (2) particularly useful for manufacturing building floors, comprises: a) an elongated body (3) made of expanded plastic material, provided with at least one longitudinal channel (4) open on the upper side for receiving a concrete casting (5); b) a reinforcement metal structure (11) of the casting (5), housed in the longitudinal channel (4), associated to the elongated body (3) and having opposite free ends (12) protruding from longitudinally opposite parts of the elongated body (3) for a portion of predetermined length. Advantageously, the composite construction element (2) possesses optimum load bearing characteristics, lightness and flexibility of use.Type: ApplicationFiled: May 10, 2005Publication date: August 24, 2006Inventor: Piero Cretti
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Publication number: 20060075701Abstract: A composite construction element (1) is described, comprising: a) at least one elongated body (2) made of expanded plastic material provided with opposite faces (2a, 2b); b) at least one reinforcing section bar (7, 8) longitudinally extending in the elongated body (2) and having a first lateral portion (7b, 8b) protruding from a first face (2a) of the elongated body (2); wherein the first lateral portion (7b, 8b) of the reinforcing section bar (7, 8) is provided with a face (9, 10) extending substantially parallel to the first face (2a) of the elongated body (2) made of expanded plastic material at predetermined distance therefrom. Advantageously, the construction element (1) exhibits improved self-supporting characteristics and improved supporting characteristics of covering elements externally associated to the construction element itself.Type: ApplicationFiled: May 31, 2005Publication date: April 13, 2006Inventor: Piero Cretti
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Publication number: 20060075707Abstract: A floor structure (1) of the type having “crossed reinforcement rods” is described comprising: a) a plurality of composite construction elements (2) arranged side by side and comprising: a1) an elongated body (3) made of expanded plastic material provided with an upper face (3a); a2) at least one reinforcing section bar (4) longitudinally extending in the elongated body (3) and having an upper portion (4c) protruding from the upper face (3a) of the body (3); b) a substantially reticular reinforcement metal structure (10) of a concrete casting (9), supported by the upper portion (4c) of the aforementioned at least one reinforcing section bar (4) at a predetermined distance from the upper face (3a) of the elongated body (3) made of expanded plastic material. Advantageously, the floor structure (1) exhibits lightness and self-supporting characteristics and allows to achieve a substantial reduction of the labor and costs for its manufacture.Type: ApplicationFiled: May 31, 2005Publication date: April 13, 2006Inventor: Piero Cretti
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Publication number: 20060032187Abstract: A self-supporting construction element (1) is described, comprising: a) an elongated body (2) made of expanded plastic material; substantially parallelepipedic and provided with respectively lower (8) and upper (9) opposite faces; b) at least one reinforcing section bar (12, 13) transversely extending in the body (2) between the faces (8, 9); wherein the elongated body (2) made of expanded plastic material is provided with at least one recess (14, 27) open at an upper side for housing a concrete casting (15) and wherein the reinforcing section bar (12, 13) extends at least in part in the aforementioned at least one recess (14, 27). Advantageously, the construction element (1) exhibits both optimum self-supporting characteristics and a good fire resistance in case of fire.Type: ApplicationFiled: June 14, 2005Publication date: February 16, 2006Inventor: Piero Cretti
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Patent number: 6298622Abstract: A self-supporting construction element (1, 101) of expanded plastics, in particular for manufacturing floor elements and walls of buildings in general comprises: (1) a central body (2), substantially parallelepipedic in shape and having two opposite faces (6, 7); at least one reinforcing section bar (8,9) transversally extending across the central body (2) between the faces (6,7) thereof and embedded in the expanded plastics; a lath (16) for supporting at least one layer (17) of a suitable covering material, associated to a fin (11,12) of the reinforcing section bar (8,9) lying flush with and substantially parallel to at least one of the faces (6,7) of the construction element (1,101).Type: GrantFiled: October 22, 1999Date of Patent: October 9, 2001Assignee: Plastedil, S.A.Inventor: Piero Cretti
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Patent number: 6045350Abstract: An apparatus for molding a continuous foamed plastics element (2), such as a floor construction member of the type comprising a substantially parallelepipedic central body (3) and at least one lateral projection (5,6), includes a mold (13) comprising a forming chamber (13a) and a stabilization chamber (13b) defined between a bottom wall (22), a pair of opposite side walls (20,21), and a cover (23). Advantageously, the cover (23) and/or one or both the side walls (20,21) of the mold (13) comprise a plurality of structurally independent segments which may be adjustably positioned toward and away from the bottom wall (22) of the mold (13) for independently adjusting, in a substantially continuous manner, the height of the molding seats of the central body (3) and/or of the lateral projection (5,6) of the continuous element (2) in each of the forming (13a) and stabilization (13b) chambers of the mold (13).Type: GrantFiled: December 4, 1997Date of Patent: April 4, 2000Assignee: Plastedil S.A.Inventor: Piero Cretti
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Patent number: 5809725Abstract: A sectional nog structure for fastening a covering element to a foamed plastic slab (5, 6, 35, 39, 49, 54) comprises at least one insert (2, 3), flush-insertable in the slab (5, 6, 35, 39, 49, 54) and associated with a tierod (4), having a base (10) accessible from the outside of the slab and constituting respective means for fastening to the slab (5, 6, 35, 39, 49, 54) the chosen covering element. Advantageously, this sectional nog structure allows to manufacture composite and modular construction elements, such as for example lost formworks and panels incorporating at least one foamed plastic slab and being able to support any covering element.Type: GrantFiled: July 18, 1995Date of Patent: September 22, 1998Assignee: Plastedil S.A.Inventor: Piero Cretti
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Patent number: 5792481Abstract: An apparatus for molding a continuous foamed plastic element, such as a floor element having a substantially parallelepipedic central body and at least one side lug, includes a mold in which respective molding cavities of the central body and of the side lug are defined between a bottom wall, a pair of opposite side walls and a cover. A mechanism adjustably positions at least one of the cover and one or both of the side walls of the mold, away from and towards the bottom wall, to regulate, in an adjustable and substantially continuous manner, the height of the molding cavities for at least one of the central body and the at least one side lug of the continuous element.Type: GrantFiled: May 24, 1996Date of Patent: August 11, 1998Assignee: Plastedil S.A.Inventor: Piero Cretti
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Patent number: 5333429Abstract: A composite panel (1) particularly suited for erecting buildings with a structural load-bearing wooden framework (4) is formed by a substantially parallelepiped body of expanded synthetic material having a standardized thickness, a modularly standardized width and a customized height, which is congruent with the design floor height of the building to be constructed. The panels have a plurality of longitudinal channels extending for the whole height of the panel. A series of channels (2,3) uniformly spaced and staggered in the sense of said width and of said thickness of the panel, are open on the adjacent face of the panel and have a T-shaped cross section. In these open channels fit T-shaped cross section wooden posts (4), the stem portion (4b) of which emerges out of said open channels and project from the surface of the panel.Type: GrantFiled: February 19, 1993Date of Patent: August 2, 1994Assignee: Plastedil, S.A.Inventor: Piero Cretti
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Patent number: 4756859Abstract: A method for obtaining expanded polystyrene products comprising portions of comparatively very different densities and thus of different mechanical strengths, in which a first mass of pre-expanded polystyrene beads of greater density is caused to partially cohere by means of steam, the resultant mass is placed in a mould of greater dimensions, said mould is completely filled with polystyrene beads of density less than the preceding, and cohesion is completed therein.Type: GrantFiled: May 28, 1986Date of Patent: July 12, 1988Assignee: Plastbau A.G.Inventor: Piero Cretti
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Patent number: RE44642Abstract: A self-supporting construction element (1, 101) of expanded plastics, in particular for manufacturing floor elements and walls of buildings in general comprises: (1) a central body (2), substantially parallelepipedic in shape and having two opposite faces (6, 7); at least one reinforcing section bar (8,9) transversally extending across the central body (2) between the faces (6,7) thereof and embedded in the expanded plastics; a lath (16) for supporting at least one layer (17) of a suitable covering material, associated to a fin (11,12) of the reinforcing section bar (8,9) lying flush with and substantially parallel to at least one of the faces (6,7) of the construction element (1,101).Type: GrantFiled: October 9, 2003Date of Patent: December 17, 2013Assignee: Plastedil S.A.Inventor: Piero Cretti