Block-type Filler Between Sustainers Patents (Class 52/320)
  • Patent number: 8745930
    Abstract: A composite floor panel includes a frame assembly having a base plate, a plurality of first lateral supports secured to the base plate, and a plurality of second lateral supports secured to the base plate. The first lateral supports lie in a first plane and the second lateral supports lie in a second plane. The first plane and the second plane each intersect the base plate and the first plane is disposed at an angle relative to the second plane. The composite floor panel also includes a concrete portion coupled to and supported by the first lateral supports and the second lateral supports.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: June 10, 2014
    Assignee: Plattforms, Inc
    Inventors: David H Platt, John E Charchenko, Daryl G Hodgson, Russell J Platt
  • Patent number: 8429876
    Abstract: A system for constructing building consisting of connected T-beams for walls and roof. To create the T shape the system uses blocks of rigid insulation as forming, which are embedded in the poured-in-place concrete. These blocks serve to insulate the structure. The final structure is a monolithic box where the foundation, (101, 102), and (103) is the lower face, walls are the vertical faces of the box, attached to the foundation by dowels (104) to the walls reinforcement part (105) and the roof (118, 119, 120), and (121) is the top. This results in a sturdy structure with integrated high insulation (111) and (122) in walls and roof. Metal nailers (123) with the polystyrene foam strips (124) can be embedded in the ends of the T-beam stems. These nailers ease the insertion of screws to wall and ceiling interiors, allowing the building interior to be finished with gypsum board or paneling.
    Type: Grant
    Filed: August 27, 2009
    Date of Patent: April 30, 2013
    Inventor: Eugenio Santiago Aburto
  • Patent number: 8033062
    Abstract: The residential building whose majority of components are prefabricated in a factory, includes a foundation supporting a bed, walls erected on the bed, a ceiling supported on the walls and a roof supported on the walls. The foundation is formed of foundation blocks that are cast on-site, in appropriate excavations, and joints by forms of stringers also cast on-site in appropriate excavations. Each foundation block is provided with a vertical pillar prefabricated in a factory, each vertical pillar having a horizontal upper planar face. The upper planer faces of the pillars are arranged along the same horizontal plane, receiving and supporting, at a distance from the ground, the bed of the building. The invention also relates to a method and device used for realizing the wall elements manually or automatically in a continuous manner.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 11, 2011
    Inventor: Christian Ferriere
  • Patent number: 8006450
    Abstract: 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: Grant
    Filed: May 31, 2005
    Date of Patent: August 30, 2011
    Assignee: Plastedil S.A.
    Inventor: Piero Cretti
  • Patent number: 7845138
    Abstract: A method for the production of a building construction with the aid of permanent formwork, comprising the steps of: placing formwork on a support, wherein the formwork includes a profiled formwork form with raised parts and lowered parts; applying a curable concrete mix on top of the formwork; curing the concrete mix; and placing reinforcement in at least one of the lowered parts of the formwork form, such that a reinforced beam is formed in said at least one lowered part of the formwork form. Such formwork is relatively lightweight and can provide certain physical building characteristics such as fire retardancy, thermal insulation and optionally acoustic insulation.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: December 7, 2010
    Assignee: Op-Deck Holdings B.V.
    Inventor: Peter Seine Maurits Groothuis
  • Patent number: 7814719
    Abstract: 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: Grant
    Filed: June 14, 2005
    Date of Patent: October 19, 2010
    Assignee: Plastedil S.A.
    Inventor: Piero Cretti
  • Patent number: 7810293
    Abstract: Multiple layers of polymer foam form structural concrete into a desired planar shape that retains a foam panel when flat or upright. The polymer foam has a planar shape and an exterior surface with multiple channels into the panel. The channels are generally wider at the bottom and narrower towards the top, preferably a trapezoidal shape. In use, the panel is placed flat within a forming frame, exterior surface upwards. Then concrete is poured upon the exterior surface and into the channels. The trapezoidal shape of the channel prevents removal of the panel from the concrete. The concrete panel can then be used flat or upright as specified for a construction project.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: October 12, 2010
    Inventors: James H. Gibbar, Faye F. Gibbar
  • Publication number: 20090301003
    Abstract: The wall is formed by stacking hollow plastic modular elements (1), with dovetailing on their upper and lower faces, from a lower metal channel (2) up to another, upper metal channel (3), the structure being stiffened by means of vertical (1) via vertical conduits in the modules that extend from the lower channel (2) to the upper channel (3).
    Type: Application
    Filed: May 2, 2006
    Publication date: December 10, 2009
    Inventor: Mariano NUNEZ-VARGAS
  • Publication number: 20090188191
    Abstract: A prefabrication system having a floor component and a frame component. In particular, the floor component includes a deck member, which can be made of deck sections, profiles, or panels. For example, the deck member can be made of continuous panels that cover the desired width and length of the floor component. Alternatively, the deck member can be made of preassembled sections that are combined in juxtaposed relation to form the desired width and length. The frame component includes opposing horizontal support channels that are attached to opposing vertical columns, respectfully.
    Type: Application
    Filed: January 24, 2008
    Publication date: July 30, 2009
    Inventors: Martin Williams, Bill R. Lindley, II
  • Patent number: 7251919
    Abstract: A structural member includes side walls, a top wall connecting a top region of the side walls, a bottom wall connecting side wall bottoms and extending beyond the side walls to form wings each having one portion of a connector for connecting members to one another, a span connected to the side walls, and truss configurations each connected to the span and the bottom wall and respectively to one side wall. Side walls, top wall, and span define an upper interior chamber and span, truss configurations, and bottom wall define a lower interior chamber. Each truss configuration has a vertical wall and two intermediate walls. An assembly of members interlock with one another in series by connecting a first portion of the connector with a second portion of another member. These interlocked members form a structure for receiving concrete as a base for a ribbed concrete slab.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: August 7, 2007
    Inventor: Manuel A. Ray
  • Patent number: 6837013
    Abstract: Wall system employing lightweight precast concrete wall panels. The precast wall panels include a concrete slab and a plurality of spaced-apart elongated generally parallel bent sheet metal channels that are partially embedded in the slab. Each wall panel can be coupled to a support wall by extending self-tapping screws through metallic wall framing members and the channels at locations where the framing members and channels cross.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: January 4, 2005
    Inventors: Joel Foderberg, Gary Foderberg
  • Patent number: 6543195
    Abstract: The structural framing system comprises a steel beam that supports flooring components interconnected through the addition of a solidifying material such as poured concrete. A structural framing system is created by anchoring steel beams to vertical columns, spanning floor sections between the steel beams, pouring concrete into the interior of the beams and contacting the flooring components, and then forming a rigid joint between the steel beam, floor sections and columns through the addition of a bonding layer.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: April 8, 2003
    Assignee: Diversakore LLC
    Inventor: Housh Rahimzadeh
  • Patent number: 6457288
    Abstract: A prefabricated concrete panel for building floors in civil or industrial structures, comprising a concrete body with a reinforcement provided with portions which protrude from one of the larger faces of the body of the panel which constitutes extrados of a floor and are designed to be embedded in the casting of the topping of the floor. At least one first shaped sheet is provided inside the body of the panel, is made of thermally insulating material, is interposed between the two larger faces of the panel body and forms, between the two larger faces of the panel body, a ventilation chamber which is composed of a plurality of mutually connected cells.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 1, 2002
    Inventors: Sergio Zambelli, Benito Zambelli
  • Patent number: 6442910
    Abstract: A composite building system includes open webbed joists with lower flanges aligned parallel to one another and spaced at a distance to create longitudinal block accepting channels. The channels are sized to accept standard masonry blocks. Masonry blocks and compressible spacers of a height less than the height of the masonry blocks are alternately laid in the longitudinal channels such that rows of blocks are aligned transversely across the channels thereby creating a grid-like pattern of blocks separated transversely by the joists and longitudinally by the spacers. Transverse grooves are created above the spacers and between adjacent blocks in each channel. Longitudinal troughs are created between adjacent blocks across each channel. Wire reinforcement is laid in the transverse grooves and grout is poured to fill the transverse grooves and the longitudinal troughs to form an integral steel reinforced concrete structure having a substantially planar top surface.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: September 3, 2002
    Inventor: Russell P. Ellison, Jr.
  • Publication number: 20020104279
    Abstract: The ledger mould assembly is suitable for use with a wall form assembly of the type comprising a pair of spaced-apart parallel foam panels defining therebetween a cavity for the setting of a flowable material for building an insulated wall. The ledger mould is used to receive a hardening flowable material and integrally forming a ledger to the wall. The ledger mould assembly comprises an elongated mould made of foam having a planar front face spanning from top to bottom, a tapered bottom edge and at least one flared recess in the front face, opening outwardly and upwardly from bottom to top. Mounting means are provided for horizontally mounting the mould against either one of the foam panels with the bottom down and the planar front face of the ledger mould in contact with the planar outside face of the foam panel. This set-up allows flowable hardening material to be poured from the top of the mould into the flared recesses to form a ledger once it has hardened.
    Type: Application
    Filed: September 6, 2001
    Publication date: August 8, 2002
    Inventor: Jean-Louis Beliveau
  • Publication number: 20010045071
    Abstract: A novel concrete composite non-meshed wall finishing system over key lock grid substrate (9) comprising of at least one foam-type building panel (10), and at least on one side of said panel a multi-number of a vertical keyed locking groove (11), a multi-number of a horizontal keyed locking groove (12) placed approximately at a 90 degree angle to said vertical keyed locking groove (11) forming a keyed locking grid substrate (13), which allows a fiber-reinforced acrylic-modified cementaceous base coat (14) to fill in and cover said keyed locking grid substrate (13) thereby giving sufficient strength to said fiber-reinforced acrylic-modified cementaceous base coat (14) to support a synthetic or non-synthetic colored finish (15) as a final exterior finish.
    Type: Application
    Filed: April 19, 2001
    Publication date: November 29, 2001
    Inventor: Paul William Budge
  • Patent number: 6205605
    Abstract: Method of construction of a vault, in which at least two half-shells (1-8; 60) are brought to bear against one another by means of at least two bearing pieces (30, 50; 70) which are mated and, each half-shell (1-8; 60) comprising an upper edge (21; 61) and a bottom lip (22); each bearing piece (30, 50; 70) is fixed removably to a half-shell (1-8; 60), the two half-shells (1-8; 60) are brought to bear against one another temporarily via their bearing piece (30, 50; 70) without their bottom lips (22) being brought to bear against one another, a keystone-forming material is cast between said upper edges (21; 61), on the bottom (14) constituted by the lips (22), so as to bring about continuous transverse joining together of the half-shells (1-8; 60), and then the bearing pieces (30, 50; 70) are removed so as to effect load transfer from the bearing pieces (30, 50; 70) to the half-shells (1-8; 60). The invention is suitable for the construction of a passage under an embankment.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: March 27, 2001
    Assignee: Freyssinet International (STUP)
    Inventor: Pierre Orsat
  • Patent number: 5934036
    Abstract: An insulated concrete slab assembly for use over expansive soils. A slab is cast in place by pouring concrete into preshaped insulating forms. The forms remain permanently in place and provide insulation to reduce heat transfer through the slab. The shape of the forms provides strengthening ribs on the slab. The ribs act as beams which allow the slab to bridge or cantilever over expansive soil between foundation walls. The forms are supported during construction by support members or legs which later prevent damage to the slab by eliminating or limiting the forces which can be applied to the slab by expanding soil.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: August 10, 1999
    Inventor: Daniel P. Gallagher, Jr.
  • Patent number: 5930965
    Abstract: There is provided a self-supporting insulated deck structure for buildings whereby the deck can be constructed inexpensively and efficiently and can attain a desirable fire rating in addition to improved sound absorption properties. The self-supporting insulated deck structure is made of a cementitious material and has no exposed structural steel members. Formwork for the insulated deck structure is made of integral panels formed from foam insulation members, fire retarding boards, and sound attenuating boards. The integral panels are supported on shored steel support brackets. Once the cementitious material cures, the shoring is removed as the deck structure is self-supporting. The adjacent integral panels provide the insulated deck structure with desirable fire rating and sound absorption properties.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: August 3, 1999
    Inventor: Tommy Lee Carver
  • Patent number: 5797230
    Abstract: An element for use in making a reinforced concrete structure of substantially planar shape. The element includes a) at least a lower reinforcing mesh consisting of mutually crossing reinforcing rods (1, 2) rigidly secured to each other, and b) a number of spaced filler bodies (3) of substantially identical shape and size cooperating with the lower mesh (1, 2) so as to locate them in a regular pattern corresponding to the pattern of the lower mesh. These filler bodies (3) interengage (14) with the lower mesh (1, 2) so as to form a rigid body, with the spaced filler bodies cooperating with the reinforcing mesh to provide cavities in the finished structure. The filler bodies (3) include flanges (8) cooperating with each other to form a lower shuttering. Preferably also, an upper reinforcing mesh (1a, 2a) is used, further increasing the rigidity of the element.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: August 25, 1998
    Inventor: J.o slashed.rgen Lassen
  • Patent number: 5678378
    Abstract: A composite building system includes a special joist having a lower flange in one embodiment and a special ladder reinforcement in another embodiment, a plurality of special masonry blocks defining a longitudinal trough, the blocks having mutually co-planar upper surfaces and at least one stepped upper edge, the stepped upper edges of the plurality of blocks running substantially transverse the trough in a grid-like pattern, a network of wire lateral reinforcement disposed in at least some of the stepped edges; and a flowable or fluid grout filling the stepped edges and the trough and, when cured, binding the joist or ladder reinforcement and the plurality of blocks to form an integral steel reinforced concrete structure having a substantially planar surface.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: October 21, 1997
    Inventor: Russell P. Ellison, Jr.
  • Patent number: 5553430
    Abstract: A method and apparatus for erecting building structures is presented. A plurality of wall panels are interconnected with each other in an array by column connectors interposed therebetween. Wall caps are then placed upon top surface portions of the wall panels and column connectors. Floor panels are then joined to the wall caps, with the floor panel forms having cavities to form headers over supporting wall panels and purlins between supporting wall panels. Rebar is placed into selected wall panels, purlins, and headers. Concrete is then deposited into selected ones of the wall panels and over the floor forms, filling the purlin and header cavities. Subsequently, a new array of wall panels and column connectors is erected on top of the poured concrete and the process is repeated to erect subsequent stories of the building.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: September 10, 1996
    Assignee: Majnaric Technologies, Inc.
    Inventors: Anton B. Majnaric, William M. Bjerke
  • Patent number: 5373675
    Abstract: A composite building system includes a joist having a lower flange in one embodiment and a ladder reinforcement in another embodiment, a plurality of masonry blocks defining a longitudinal trough, the blocks having mutually co-planar upper surfaces and at least one stepped upper edge, the stepped upper edges of the plurality of blocks running substantially transverse the trough in a grid-like pattern, a network of wire lateral reinforcement disposed in at least some of the stepped edges; and a flowable or fluid grout filling the stepped edges and the trough and, when cured, binding the joist or ladder reinforcement and the plurality of blocks to form an integral structure having a substantially planar upper surface.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: December 20, 1994
    Inventor: Russell P. Ellison, Jr.
  • Patent number: 5146726
    Abstract: A composite building system includes a joist having a lower flange, a plurality of masonry blocks supported on opposite sides of the joist by the flange and defining a longitudinal trough in which the joist is disposed, the blocks having mutually co-planar upper surfaces and at least one stepped upper edge, the stepped upper edges of the plurality of blocks running substantially transverse the trough in a grid-like pattern, a network of wire lateral reinforcement disposed in at least some of the stepped edges; and a flowable grout filling the stepped edges and the trough and, when cured, binding the joist and the plurality of blocks to form an integral structure having a substantially planar upper surface.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: September 15, 1992
    Inventor: Russell P. Ellison, Jr.
  • Patent number: 5062249
    Abstract: The invention herein teaches a crown system for kilns and furnaces for the high temperature firing of materials. One method used in the industry for a crown system consists of supporting layers of insulation with inverted T-rails attached to bones which are further attached to hanger devices hanging from pipes that rest upon an ultimate support system. To overcome the numerous problems associated with the prior art the following considerable modifications have been made: 1) slotting each inverted T-rail, along its narrow attaching flange and adding stops to each side of said slot such that the bone is evenly spaced along the T-rail when inserted and slid into position, 2) fitting rigid insulation cases fully between the bones and adjacent layers of insulation and 3) said insulation cases and said T-rail stops combine to lock said bones in position.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: November 5, 1991
    Inventor: John D. Smagner
  • Patent number: 4890993
    Abstract: A primary forming member is associated with a secondary supporting structure to allow rapid construction of elongate concrete structures of uniform cross-section by removing the primary forming member before the concrete mass supported by the secondary supporting structure is set or self-supporting. The primary forming member provides plural spaced forming arches, foldable for transport, and supported for vertical motion on a carriage providing for horizontal motion along the axis of symmetry of the formed structure. The primary forming member supports a plurality of spaced support arches of the secondary supporting structure with a plurality of cross elements therebetween to support rigid panels that create a forming surface for plastic concrete and remain as a part of a formed concrete structure to provide insulation. The forming system forms a self-supporting arched concrete surface with spaced depending arches by being sequentially moved axially therealong.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: January 2, 1990
    Inventor: T. Woodrow Wilson
  • Patent number: 4879157
    Abstract: An element of insulating material, particularly for heat and/or sound insulation of buildings and for mounting between supports, has a body including a plurality of supports, has a body including a plurality of separate parts which are formed by at least one continuous beveled cut and shaped so that they are displaceable relative to one another during mounting and can be clamped between supporting elements.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: November 7, 1989
    Assignee: Deutsche Rockwool Mineralwoll GmbH
    Inventor: Manfred Pankatz
  • Patent number: 4682458
    Abstract: The floor is composed of parallel spaced beams (11) having flanges (12) and blocks (13) of polystyrene foam which are laid on the flanges to bridge the gaps between the beams. Boards (26) are laid on the polystyrene blocks, and are supported by the blocks, which form load-bearing members of the floor. The blocks may have flanged portions (14) extending over the beams, so as to provide heat insulation.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: July 28, 1987
    Assignee: Trent Jetfloor Limited
    Inventor: Ian H. Sparrow
  • Patent number: 4658556
    Abstract: A blocking system or backing system for stud buildings provides expandable and retractable backing spans for placement and fitting between the studs. Each backing span is composed of multiple elements including a first backing element having a stud face for abutting against the web or wider dimension of a stud, and a second backing element for bearing against the first backing element. The first and second backing elements are formed with complementary bearing surfaces and are movable relative to each other with a component of motion in the lateral direction. The relative motion permits expansion and retraction of the backing span for spanning variable spacing between the studs. In the preferred example the backing span further includes a third backing element having a stud face for abutting against the web or wider dimension of an adjacent stud.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: April 21, 1987
    Inventor: Floyd J. Jenkins
  • Patent number: 4628657
    Abstract: For gas-tight lining of a chamber which is exposed to high temperatures a ceiling and wall construction is provided which is assembled from support bars, rows of profiled bearing bricks supported thereon and central bricks inserted between these rows of bearing bricks and profiled to fit together with these bearing bricks. Support bricks which are also suitably profiled are inserted between the bearing bricks on the one hand and the central bricks on the other hand, and the central bricks have a truncated pyramid shape which tapers towards the interior of the chamber to be lined. All bricks in the construction can be replaced individually in a simple manner.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: December 16, 1986
    Assignee: Krupp Polysius AG
    Inventors: Bodo Ermer, Dieter Mischorr
  • Patent number: 4573303
    Abstract: A method of constructing floor castings for building comprising the steps of forming a frame or ribbing (6) of beams, supporting panels (1) between the beams to provide substantially the lower surface of the floor at a level below the lower edges of the beams, temporarily securing flat bridging means (9) against the lower surfaces of the panels to continuously bridge the gaps therebetween partially occupied by the supporting beams and pouring a layer (13) of concrete over the structure comprising the panels and beams to form, when set, a composite cast floor having a substantially smooth and continuous lower surface after removal of the bridging means.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: March 4, 1986
    Inventor: Andres G. Figari
  • Patent number: 4542612
    Abstract: A system for forming concrete structural elements including a plurality of runners forming a spaced array; a plurality of supports extending upwardly from and connecting intersecting runners; and a plurality of coffer plates secured in position over the supports by a plurality of anchor nuts capable of interacting with the concrete poured to form the structural element. The coffer plates initially act as a mold for the structural element being formed. Thereafter, the array of runners and supports are used to suspend finishing components (plumbing lines, eletrical conduit, electrical wiring and fixtures, ceilings, non-load-bearing walls, etc.) from the structural element without requiring alteration of the concrete forming the structural element.
    Type: Grant
    Filed: June 18, 1984
    Date of Patent: September 24, 1985
    Inventor: Andrew Daga
  • Patent number: 4409717
    Abstract: A hand tool is provided for swedging female seams of standing seam roof panels. The tool includes a handle and a seam-engaging structure. The handle and seam-engaging structure can either be integral or in two pieces. The seam-engaging portion has first, second, and third substantially planar surfaces with the first and second surfaces making an acute angle with respect to each other, and the second and third surfaces making an acute with respect to each other. When placed in operative association with a female seam having an end edge and first and second bends, the seam can be "opened-up" by effecting bending at the second bend, while not disturbing the first bend or end edge. To open up an entirely closed seam, the hand tool is placed at an endlap location and is impacted with a hammer to move from the endlap position to a more mid-seam location, and swedging is then effected.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: October 18, 1983
    Assignee: Atlantic Building Systmes Inc.
    Inventor: David W. Boozer
  • Patent number: 4037375
    Abstract: A floor-ceiling system for multi-story buildings which utilizes a bottom membrane having significant tensile strength supported on the building frame, such membrane being either cast in place and supported by shoring or prefabricated and self-supported, with void-producing duct forms regularly arranged and supported on the membrane, and a poured-in-place plastic material covering the membrane and duct forms to create structural elements alternating with the duct forms to form a substantially finished floor-ceiling system when the plastic material cures. The duct forms may be provided with access openings to the floor or ceiling or with lateral access openings interconnecting each other. The duct forms may be left-in-place forms or inflatable tubes removed when deflated after the material cures. Finishing materials for the floor or ceiling such as carpeting or acoustical tile may be secured directly to the essentially planar bottom or top surface of the system.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: July 26, 1977
    Inventors: Theodore Maggos, David H. Geiger, Sheldon M. Steiner, Henry D. Gregorio