Abstract: Prefabricated components for making floor slabs, floors and walls with exposed wood beams for small buildings comprising laminated panels with at least two mutually opposite edges that are affected by longitudinal grooves; laminated wood beams being provided in an upper region with coupling elements for respective central metallic lattices and with at least one supporting ridge for the ends of the panels that have grooved edges; the beams, the lattices and the converging grooved edges being mutually coupled by casting conglomerate.

Abstract: Disclosed is a cushiony flooring capable of being easily manufactured and constructed, with durability of a coupled portion thereof improved. The coupling cushiony flooring includes lower steps 12 formed along two sides of the flooring; an adhesive 16 coated on an upper surface of the lower steps; a release paper 18 attached to the adhesive; and upper steps formed along two sides of the flooring.

Abstract: The invention comprises an apertured frame secured to a substrate and having a slotted arrangement adapted to receive and secure properly shaped tiles.

Abstract: A decorative laminated building panel, usable for placement on an exterior surface of a building to improve the appearance thereof. The panel includes a foam core, a thin fabric mat attached to at least one surface of the foam core, and a durable material attached to the fabric mat with a binding agent. The durable material is intended to be used on an outward-facing surface of the panel, and may be selected from materials including stone, tile, and brick. Optionally, the panel may include a final finish covering the exposed exterior surface thereof, to give a more pleasing appearance. The panel is intended for a non load-bearing application, and the rear surface of the panel is preferred to be substantially cement-free, that is, free of Portland-type cement. Among other uses, panels according to the invention are suitable for use as exterior skirting material on manufactured homes.

Abstract: A decorative tile set of nonuniformly-shaped tiles (tiles with non-parallel sides and/or non-perpendicular comers) is manufactured for interlocking installation adjacent uniformly-shaped tiles, i.e., adjacent to tiles having parallel sides and/or perpendicular corners, as in standard flooring tiles such as laminate flooring planks. A sacrificial bed having a planar upper bed surface is provided, and trenches are cut in the sacrificial bed to define areas on the upper bed surface which at least substantially correspond to tile boundaries. At least one workpiece from which the tiles are to be cut is then provided atop the sacrificial bed with its finished face closely held against the sacrificial bed. The workpiece is then cut to produce tile blanks bounded by tile blank boundaries, with the tile blank boundaries being outwardly spaced from the desired tile boundaries by an offset distance.

Abstract: A tile and frame flooring system consisting of uniform frame elements joined together so as to create a support frame upon which a tile rests. The frame elements combine to form a lattice of support frames covering the surface to be tiled. The tiles are nestled into the frames to complete the flooring. The wood frame and tiles merge in appearance to form an aesthetically pleasing and continuous floor surface that is easy for the user to install.

Abstract: A method and apparatus for laying down floors or linings and for their quick removal and replacement by glueing or fixing them onto a support, removable with respect to a support sheeting (9). The method includes providing fixed support (8) and movable support (7), which have a substantially similar shape. The fixed support (8) being immovably fixed into the support sheeting (9) and the second movable support (7) being movably fitted with the first fixed support (8) and being intended for laying down floors or linings (5).

Abstract: A floor panel having a structural core and a finished surface layer disposed on a top side of the structural core. A substantially water-impervious sheet having a plurality of projections for providing an air gap between the core and a concrete foundation is affixed to a bottom side of the structural core. The finished surface may be carpet, carpet underlayment, or a finished wood or wood-like surface. The floor panel minimizes the effort required to construct a sub-floor whilst dealing with moisture problems typically encountered in installing wooden sub-floors over a concrete foundation.

Abstract: A modular raised floor system includes rectangular floor panels, each of which has four hollow projections that define a cross-shaped groove. Each adjacent pair of the panels are locked together by a positioning member, which is disposed in two of the grooves and which is formed with two fixed posts that are inserted into two holes in the pair of the panels. A plurality of long and short cover strips are bolted on L-shaped strip-supporting surfaces of the projections, and are located on a horizontal plane. Each of the long cover strips extends on a row of the floor panels, and has cable holes for passage of cables. Each of the short cover strips extends on one or two floor panels. The long and short cover strips are arranged in a net shape to cover the grooves.

Abstract: A view panel for a raised floor system is described which is constructed by an outer rigid frame, an upper plate of a tempered glass panel and a lower plate of an apertured steel panel for providing structural support of the view panel. The invention further describes a raised floor system that utilizes such view panels installed in floor panels in a semiconductor fabrication environment.

Abstract: A thin brick panel system and method of forming a thin brick wall includes an expanded polystyrene foam panel having a plurality of laterally extending channels formed therein for receiving a plurality of thin brick units. The thin brick units are bonded with an adhesive directly to the foam panel and the seams between adjacent brick are filled with a mortar that bonds to the foam panel. The foam panel may be attached to a substrate with an adhesive as well as fasteners. Strips of a mesh fabric may span several panels to bind the panels together to form a structurally sound thin brick wall.

Abstract: The invention relates to a system for laying and mechanically joining building panels, especially thin, hard, floating floors. Adjacent joint edges (3, 4) of two panels (1, 2) engage each other to provide a first mechanical connection locking the joint edges (3,4) in a first direction (D1) perpendicular to the principal plane of the panels. In each joint, there is further provided a strip (6) which is integrated with one joint edge (3) and which projects behind the other joint edge (4). The strip (6) has an upwardly protruding locking element (8) engaging in a locking groove (14) in the rear side (16) of the other joint edge (4) to form a second mechanical connection locking the panels (1, 2) in a second direction (D2) parallel to the principal plane of the panels and at right angles to the joint. Both the first and the second mechanical connection allow mutual displacement of joined panels (1, 2) in the direction of the joint.

Abstract: The invention relates to a system for laying and mechanically joining building panels, especially thin, hard, floating floors. Adjacent joint edges (3, 4) of two panels (1, 2) engage each other to provide a first mechanical connection locking the joint edges (3,4) in a first direction (D1) perpendicular to the principal plane of the panels. In each joint, there is further provided a strip (6) which is integrated with one joint edge (3) and which projects behind the other joint edge (4). The strip (6) has an upwardly protruding locking element (8) engaging in a locking groove (14) in the rear side (16) of the other joint edge (4) to form a second mechanical connection locking the panels (1, 2) in a second direction (D2) parallel to the principal plane of the panels and at right angles to the joint. Both the first and the second mechanical connection allow mutual displacement of joined panels (1, 2) in the direction of the joint.

Abstract: A flooring system including resin channels having webs and legs mounted on joists with their webs resting on the edges of the joists and their legs straddling the sides of the joists, and a plurality of adjacent resin tiles each having a plate with inner flanges extending downwardly from the plate with slots in the inner flanges receiving pins on the legs of the channels, and outer flanges located outwardly of the inner flanges which rest on the webs of the channels.

Abstract: A wood floor structure includes a pad layer composed of a plurality of pads and each pad has at least two taper-shaped protrusions extending from each side thereof. Each pad has a rod extending from a top surface thereof. A plurality of wood strips each have at least one hole defined in a bottom thereof so as to receive said rod in said at least one hole.

Abstract: The invention provides a laminated product of urethane-based resin. That is, the invention arranges a continuous reinforcing fiber to one direction, impregnates the arranged fiber with thermoplastic resin to form a prepreg sheet having 50% in volume ratio of the fiber, laminates two or more resulting prepreg sheets so as to intersect fiber directions at right angles or further laminate of the prepreg sheet to form a fiber-reinforced resin layer, laminates a urethane-based resin layer on the resulting fiber-reinforced resin layer, and thus provides a urethane-based resin laminated product having excellent dimensional stability and application ability.

Abstract: A wooden floor board includes a board body and a connector. The board body has two lengthwise ditches formed in the bottom surface. In a preferred form, each lengthwise ditch has a cone-shaped section formed in the innermost section. The elongate connector has two lengthwise upright insert members at two opposite lengthwise sides to engage one of the two lengthwise ditches of two neighborin board bodies. The connector is laid under two neighboring board bodies en assembling the wooden floor boards into a complete floor of a room. Any board body of the complete floor may easily be pried up with a tool like a screwdriver if it is broken and has to be replaced with a new one.

Abstract: A glass tile system and a method of installing glass tiles on a subsurface, such as a floor, wall, counter top, table top, or ceiling, by forming a grouting frame around the glass tiles with rods of solid flexible plastic or polymer material, which are removably fastened to the subsurface with a plurality of fasteners.

Abstract: The invention relates to a support and/or drainage plate made of a foil-like plastic material, for use with a plate-lined floor structure or a wall so as to create a space between the ground and the surface lining to be applied onto the foil-like plate. The structure of the plate is such that cavities are created by means of, on the one side, projections extending substantially in one direction and, on the other side, raised areas at the same level between which chambers are embodied for receiving a hardening contact medium, such as mortar or adhesive, which forms a contact layer with the surface lining to be applied. According to the invention the structure consists of projections (N1, N2) or (S1, S2) which extend in at least two directions and intersect. The resulting chambers (M1) are delimited in their circumference by the projections (S1, S2), which are open towards the other side of the plate.

Abstract: Random-shaped tiles are joined in an arbitrary array onto a front plane of a metal plate having holes, the metal plate being fixed to a backing plate. The random-shaped tiles are supported by supporting pieces of attaching pieces attached to the metal plate. The weight of the random-shaped tiles is received at the lower edge portion thereof by the supporting pieces, and the movement thereof in the direction of peeling away (forwards) is restricted at the upper edge portion of the random-shaped tiles by the supporting pieces. The random-shaped tiles can be joined to the metal plate having holes in a free array, and work can proceed speedily without any sagging during the joining work. Following joining, the random-shaped tiles are shielded from a good deal of vibrations and movement applied to the building frame, while being held in a secure joining state to the metal plate having holes.

Abstract: An anchor rail and anchorage system for attaching ceramic refractory materials to a metallic substrate, or casing. Each anchoring rail (3) includes a web (9) and a retention structure. The retention structure of the rails includes a plurality of tabs (13) extending from the web to engage with alignment recesses on the edges of the tiles. The alignment structure on each tile (16) includes a slot (18) formed in each of two opposite sides of the tile (16). A method of building ceramic lined structures includes attaching an anchor rail (3) to a surface of the casing (5), fitting a row of tiles (4) in place with their alignment structures each fitting around the retention structures (13) of the anchor rail, and continuing on with another row of tiles, until a predetermined surface area of the structure is lined with tiles.

Abstract: An improved structure of an assembly type floor or wall tile includes a face layer of stone or wooden material, and a bottom layer of plastic, which are injection molded and bonded integrally so that they will not disengage, and the stone face layer is not vulnerable to breaking. Besides, the present invention has the features of dampness and fire resistance, material savings, reduced costs, lightness, and easy transport. Besides, the periphery of the bottom layer is provided with projecting and indented retaining posts, the bottom side thereof being formed with a plurality of grooves that have a circular, square or any suitable shape, and that are narrow at the opening and wide at the bottom. The retaining posts are for assembly purposes to facilitate construction and permit repair and replacement. The grooves in the bottom side has the effects of shock-absorbing, ventilation, reinforced structure, plastic material savings, and lightness.

Abstract: A wood floor board assembly includes a plurality of base plates, and a plurality of linking members. Each of the base plates has a front side provided with a rib and a rear side defining a recess. The rib has a bottom provided with a first snap portion. The recess has a bottom provided with a second snap portion. A contact portion is provided on a bottom of each of the base plates and located between the first snap portion and the second snap portion. Each of the base plates has a left side provided with a third snap portion having an upward directed opening and a right side provided with a fourth snap portion having a downward directed opening. Each of the linking members has a front side defining a first fitting channel, a rear side defining a second fitting channel, and a mediate portion provided with an interface flange. Each of the front side and the rear side of the linking member is provided with a locking portion which extends inward and is inclined downward.

Abstract: A molded skirting board, crown molding, or other decorative moldings simulating natural wood millwork, and a method of molding a loose cellulosic mat, in a single pressing step, to provide one or more relatively high density, skirting boards without requiring preliminary pressing, or other pre-shaping step, such as scalping. The molded articles are molded in a conventional, multi-opening fiberboard press to produce multiple, interconnected parts in a single pressing step process, while achieving excellent transfer of mold detail (embossing fidelity) without visually noticeable fiber fracture. A corrugated or L-shaped, hidden stiffening/positioning member spaces the article from a wall or ceiling to simulate thick, heavier, natural wood millwork.

Abstract: Process for installing against a support (S), the ground in particular, a covering consisting of planks, laths, wooden panels (1) which consists in leveling the surface to be overlaid, then in fixing against the said surface (S), side-by-side planks (1), leaving a space between them and the ground. The process is characterized in that the spacing and the fixing of the planks (1) constituting the covering is obtained by means of pairs of elements (3, 4) distributed over the length of the said planks, which elements (3, 4) take the form of blocks, of which the one (3) is fixed transversely on the lower face of the plank and the second (4) over the ground, the opposite faces of the said blocks (3, 4) comprising interlockable complementary zones (7) ensuring the mutual securing of the said elements (3, 4).

Abstract: A concrete panel system comprising a plurality of concrete panels arranged in side-by-side fashion on a substantially vertical supporting wall, each of the panels comprising a rectangular body having a front surface and a rear surface and beveled side edges, the side edges each forming an angle of between eighty-five and ninety degrees with the rear surface, and a concave caulking groove lying between and connecting each of the beveled side edges with the front face, the side edges of adjacent panels forming a V-joint between the adjacent panels, a flexible sealant material in a portion of the caulking grooves of adjacent panels and a portion of the V-joint for providing a seal between adjacent panels, and a hanger element embedded in the rear of the panels for securing the panels to the supporting wall.

Abstract: A paving block system and corresponding components and methods are disclosed. The system finds particularly efficacious application in forming patios, walkways and driveways, and may comprise interconnecting or adjoining bottom barriers and side barriers. Each bottom barrier receives one or more paving blocks thereon, and may optionally have formed in the bottom surface thereof a recess for receiving a top rail formed into bottom barrier. In preferred embodiments of the present invention, adjoining blocks interconnect to form a relatively continuous paving block top surface.

Abstract: A profiled web for arrangement between the underside of floor tiles and an upper surface of a support plate. The profiled web is based on a rigid plastic film formed to have a parallel series of successive channels, each of the channels being defined by first and second edge portions and a trough portion therebetween. The series of channels are open alternately to the upper surface of the support plate as a first group of channels and to the underside of the floor tiles when in an installed position as a second group of channels. First trough portions of the channels open to the support plate are parallel, and form an upper surface of the web; second trough portions of the channels open to the tiles are parallel and form a lower surface of the web. The web is provided with a plurality of through-openings which produce a liquid- and gas-permeable connection between successive channels.

Abstract: A support panel for supporting external wall forming members such as bricks to form an external wall of a building structure. External wall forming members have elongated lateral extensions projecting on the side surfaces thereof. The support panel has a back plate and rows of engaging members with bent fingers arranged such that the external wall forming members can be inserted between two adjacent rows of engaging members and the lateral extensions are covered by the fingers. The support panel can be fabricated by pressing or bending a flat sheet metal, and the engaging members are integral with the back plate. Therefore, the support panel can be easily applied to a wall of a building structure and the external wall forming members can be easily laid to complete an external wall.

Abstract: In a method for installing tiles on a substrate, tiles, having a first surface and a second, machinable surface, are arranged in installed locations on the substrate with the second, machinable surface facing away from the substrate. The machinable surfaces are then machined to reduce tile-to-tile irregularities and adjust for the variations in the subfloor, and the tiles are turned over so that the first surfaces face away from the substrate. A decorative flooring unit is also provided having a tile with a shim layer on its underside, an edge member surrounding the tile and a substrate extending beneath the edge member and the tile. The tile is installed within the edge member with the shim layer facing away from the substrate. The tile may be reversed after sanding the edge member and shim layer.

Abstract: A new and useful apparatus for use in the installation of a composite building panel. The apparatus comprises a corrugated member adapted to be adhered to the panel to form a back face of the panel when so adhered, anchor integral with the corrugated member and extending longitudinally from an upper portion of the corrugated member and lock integral with the corrugated member and extending longitudinally from a bottom portion of the corrugated member. The lock engageable with the anchor of an adjacent panel has the corrugated member as a back face.

Abstract: A wall covering system includes prefabricated T-shaped (in cross section) horizontal supporting strips, L-shaped horizontal supporting strips, L-shaped end-locking strips and decorative panels. The end-locking strips interact with the horizontal strips and the decorative panels, provide an aesthetic appearance to the finished system when assembled on a wall and provide safety by covering the exposed ends of the T-shaped horizontal strips. In use, the wall panelling system disclosed herein may be easily and conveniently installed onto existing walls by a user without professional assistance and may be just as easily and conveniently removed from the wall whenever it is desired to inspect behind the panels, change the decor, or to remove the panels for installation at another location.

Abstract: A removable tile display includes a decorative tile, a holder for the tile, and releasable adhesive for removably securing the back surface of the tile to the holder. The holder includes a cavity in which the decorative tile is positioned. Decorative tiles of various designs may be substituted within the holder as desired. The tile and holder combination may be permanently affixed to a wall or other planar surface, or they may be placed for vertical orientation within a tabletop support.

Abstract: An interfacing floor tile in the form a right triangle with two adjacent sides of equal length is provided with elongated third side opposite the right triangle. Each side is formed with a row of female cavities located adjacent the sides and positioned to mate with a corresponding male connecting members of a neighboring tiles. Additionally, each of the adjacent sides is integrally formed with an edge which slopes downward to a male interlocking strip which extends outwardly in order to mate with female cavities of neighboring tiles. Alternatively, each of the adjacent sides may be formed with vertical edges which rise from the interlocking strip to the surface of the tile. In another embodiment the female cavities are omitted from the elongated side which has a vertical edge and the adjacent sides may have either sloping or vertical edges.

Abstract: An apparatus for retaining building blocks, such as bricks and cement blocks, to a wall structure to form a suitable veneer, without the use of mortar or other binding agent between the blocks. The apparatus is also suitable for use as a brick laying guide in the construction of conventionally mortar and brick wall. The apparatus comprises a base plate attached to the wall structure by nailing, screwing, or other like means. Attached to the base plate and extending generally perpendicularly outward are at least two retainer arms, the inner faces of said arms opposing one another and forming a retaining space therebetween for closely receiving the building block. Each of the arms further comprises at least one prong extending into said retaining space.

Abstract: A method of floor construction with a grid system utilizing 1) a plurality of floor grid members interconnected to create a floor grid member assembly; 2) a plurality of floor tile members mounted on respective ones of the floor grid members; 3) a plurality of cushion pad members having one associated with each respective floor tile member; 4) grout strip members mounted within grout receiving grooves in the floor grid members and about the floor tile members; and 5) a tile setter tool member is used to mount a floor tile member between the grout strip members.

Abstract: A ceramic tile is mounted to the wall of an incinerator or other high temperature and/or corrosive environment with a stud assembly that includes a threaded stud and a ceramic T-nut. The ceramic T-nut thermally shields the stud to protect it from oxidation and corrosion, and reduces cracking in tile because the T-nut and the tile have similar thermal expansion. The T-nut is accessible through a small bore.

Abstract: A tile having a desired pattern is provided. The pattern goes through the tile in the thickness direction. For manufacturing such a tile, e.g. a partition plate 84 is disposed in a pressure forming die 91 so as to divide its inside space into an outer forming space 95 and an inner forming space 96. Light black granules and light red granules are filled respectively in the outer and inner forming spaces 95, 96. Then, the partition wall 84 is taken out from the die 91, and lining granules are filled over the colored granules. Thereafter, they are pressed into one body and burned.

Abstract: A roofer's grid apparatus is provided for use in retaining shingles on a roof. The apparatus includes several mounting strips of support material which are secured together by horizontal connecting strips so that the mounting strips are parallel to and spaced from one another. A plurality of shingle retaining arrays are provided on the mounting strips for retaining shingles on the apparatus with the shingles arranged in horizontal courses and with each course overlapping the course beneath. Each array includes a pair of raised ears connected to the mounting strips and being spaced horizontally from one another by a distance adapted to be substantially equal to the length of a shingle, and a plurality of spurs protruding from the strips and adapted to penetrate the shingle when the shingle is positioned between the ears and pressed against the roof.

Abstract: A corrosion-resistant self-supported frame of a pre-formed shape, to which a mortar substrate and ceramic tile is applied, in order to produce corner seats and trays. The base unit (1) connects to vertical surfaces by fasteners through mounting holes (3). A mortar support flange (5) provides shape of bonding surfaces for ceramic tile as well as support for the applied substrate (6b). The substrate (6b) is reinforced by mortar penetration holes (4), allowing monolithic connection of all substrate materials (6). A drain hole (2) allows for the elimination of moisture from the base unit (1).

Abstract: A resilient flooring system arranged over a base floor which includes a layer of resilient pads supporting sub-floor panels in a generally side-by-side manner. Slots, in the form of an inverted L, are formed between opposed ends of the sub-floor panels and resilient pads. A limit bar, in the shape of a "Z" is arranged in the slots with its upper horizontal flanges extending in the upper horizontal leg of the slot and in engagement with a portion of one end of the sub-floor panels. Flooring boards are arranged over the slots and are secured with the sub-floor panels. Resilient strips are arranged in the slots over the lower horizontal leg of the limit bars. The resilient strips apply constant pressure to the under surface of the flooring boards in the area of the slots.

Abstract: A building facade material generally includes a plurality of elongate stone strips and a plurality of backing strips adhered thereto with an elastic adhesive disposed between adjoining backing strips for enabling front sides of the elongate stone strips to abut one another when the backing strips are adhered to a curved surface. A method for preparing a stone facade for a curved surface, in accordance with the present invention, generally includes the steps of adhering a sheet of backing material to a sheet of stone, thereafter cutting the stone sheet with the adhesive backing sheet into elongate stone strips with elongate backing strips adhered thereto. Thereafter, the elongate backing strips are adhered to one another with an elastic adhesive. In addition, the stone strips and the backing strips may be beveled for enabling the backing sheets to be disposed on a curved surface, while distorting the elastic adhesive in order to cause the front sides of the stone elongate strips to abut one another.

Abstract: An inlaid tile gutter system for use in swimming pools contains a channel, braces mounted atop the primary gravity flow channel and stiffeners mounted on the poolside of the channel provide a relatively stiff gutter system capable of withstanding deformations due to excessive loadings and impact. Ferro concrete material may be placed within channels formed by the vertical stiffeners to provide a support and a base upon which to set tile.

Abstract: A floor covering assembly, comprising:a metallic subflooring covering a defined area of flooring, said subflooring being included in a larger area of flooring having a first pattern thereon; anda plurality of groups of tiles for covering said defined area, each group having a different particular pattern, said tiles comprising a laminated structure having a periphery and formed from a bottom layer having a face for contacting with said subflooring and magnetic means for covering the entire face of said bottom layer securing said tile to said subfloor, said bottom layer formed from an elastomeric material having magnetic particles embedded therein, a middle layer bonded to said bottom layer and having support means for providing structural integrity to said tile and for locating said particular pattern, and a top layer bonded to said middle layer and having a surface for accommodating pedestrian traffic, each of said group of tiles having different particular patterns to permit different patterns to be display

Abstract: Flooring structure having a rigid horizontal base and a tile or terrazzo top flooring layer. This flooring structure also has a crack isolation layer between the base and the top flooring layer. The crack isolation layer comprises a hard, essentially rigid material which is in load bearing relationship with the base and the top flooring layer and which extends over about 50 percent to about 80 percent of the surface area of the crack isolation layer as measured in the horizontal direction. The crack isolation layer may be in the form of a fracturable sheet or in the form of pilings. The remaining portion of the crack isolation layer may be occupied by a deformable material.

Abstract: A tile structure and method for applying tiles to the floor surface of offices, corridors and various rooms in which the surface of a floor to be tiled is covered with a sheet and peripheral side of tiles to be applied are surrounded with an elastic joint material. The tiles are applied side by side in sequence on the sheet with the elastic joint material forming a joint between adjacent tiles and in a compressed condition so as to prevent such applied tiles from moving each other. The sheet prevents the tiles from sliding along the floor surface.

Abstract: The present invention provides solid wood paneling formed of beveled, solid wood planks having a uniform, standardized length. At least some of these planks are made up of shorter, random length boards that have been joined into longer, uniform length planks. All four edges of each of these individual boards are beveled so that when they are assembled into a plank, the plank will include a bevel which accentuates the location of the joint between the individual boards of a plank. Such a solid wood paneling is less expensive and easier to install than standard solid wood paneling, yet achieves the same distinctive look of standard paneling with a plurality of random length individual boards which are individually applied.

Abstract: The flooring structure herein comprises a rigid base or substrate (typically wood or concrete), an outer course of ceramic tile or other fracturable material, a high impact strength crack isolation sheet interposed between the base and the tiles. The crack isolation sheet is a thin rectangular sheet, typically of plastic material such as high impact polystyrene, having a flat base portion and a plurality of dimples arranged in a regular geometric pattern and projections extending in one direction (i.e., upwardly) from the base portion. Both the base portion and the projections have holes. The base portion of the crack isolation sheet is adhesively bonded to the base or substrate. A substantially incompressible compression bed material, e.g., mortar or concrete, fills the space between the crack isolation sheet and the tiles but not the space beneath the projections of the crack isolation sheet. The latter space is essentially an unfilled air space.

Abstract: The invention relates to a portable, foldable dance floor having a top surface of parquet panelling mounted on a flat plywood base, and composed of identical half-sections which open horizontally on a flat surface and close vertically parallel to each other.

Abstract: A resilient floor (A) is disclosed assembled on a base surface (10) to provide a resilient floor (36) which comprises a plurality of sub-floor sections (B) arranged generally side-by-side. A resilient layer of material (62) is carried generally co-extending underneath the sub-floor sections. A slot (38,74) and widened groove (40) accommodate a fastening member (51,71) which includes lateral flanges (58,60) and (78,80) which limit upward movement of sub-floor sections (B). Flooring strips (D) are nailed to the sub-floor sections so that the flooring strips move integrally together in relative vertical movements relative to the fastening strips (51,71). Resilient layer (62) urges sub-floor sections (B) and integral flooring strips (D) upwardly such that downward forces produced by activity on the floor (36) are provided with a degree of resiliency.