Abstract: A positioning device for positioning a reinforcement bar within a masonry block. The positioning device includes a core with a central opening and an openable seam, a support structure having support arms connected to the core and arranged and configured for holding the positioning device in a desired position in a cavity of the masonry block. The core is arranged and configured such that a gap can be formed along the seam, the gap being configured to receive the reinforcement bar, and the core encloses the reinforcement bar within the central opening when the gap is closed.

Abstract: A concrete reinforcing bar support including a base, a support structure extending upwardly from the base, a first clamping member affixed to the support structure and extending upwardly above a top surface of the support structure, a second clamping member affixed to the support structure and extending upwardly above a top surface of the support structure, and a third clamping member affixed to the support structure and extending upwardly above the top surface of the support structure. The second clamping member has an interior surface generally facing the interior surfaces of the first and third clamping members. The first clamping member is separated by a space from the third clamping member. Ribs extend inwardly from the interior surfaces of each of the clamping members so as to compressively contact a reinforcing bar placed interior of the clamping members. The support structure has a generally H-shaped cross-section in a plane parallel to said base.

Abstract: This rebar chair has a body with four legs between which there are defined two intersecting passages for simultaneously receiving the intersecting portions of two rebars normal to each other. The rebars are suspended by a fastening wire or supported by an auxiliary chair below said body. The legs forming one of the passages have a uniform spacing and are adapted to closely straddle the rebar extending through the same. The legs of the second passage flare downwardly so that their spacing progressively increases from the body to the free ends from a spacing smaller than to a spacing greater than the uniform spacing between the legs of the first passage. The chair is positively located and stabilized by the intersecting rebars. A saddle is formed on the top of the body for simultaneously supporting a third rebar.

Abstract: A universal block made of concrete designed to be used with different size posts and beams. The pier block is a conical, six-sided structure and includes two concentrically aligned, post-receiving voids designed to receive the ends of a (4×4) or (6×6) inch post. The (6×6) inch void is positioned above the (4×4) inch void. Formed horizontally on the top surface of the pier block are two transversely aligned beam-receiving slots. Each beam-receiving slot includes a narrow and a wide slot longitudinally aligned. The wide slot is positioned above the narrow slot. A vertically aligned drain hole is formed through the pier block from the bottom surface of the (4×4) inch void to the bottom of the pier block, which allows water to drain from the post-receiving voids.

Abstract: A support device for a wire mesh. The wire mesh is held in place by the supporting device which includes legs and cup shaped members. The legs will stand on a support surface and the cup shaped members will engage the bars of the wire mesh to hold the wire mesh off the surface such that when concrete is poured into a form, the wire mesh will be properly located in the finished product.

Abstract: Device for supporting and connecting concrete reinforcing elements which has a base adapted to rest on a supporting surface, an upright post extending from the base, and a clip mounted on the post having a pair of orthogonal sockets engagable with two horizontally extending reinforcing elements for connecting the elements together at right angles to each other and holding the elements a predetermined distance above the supporting surface.

Abstract: A device for expediently and efficiently adjoining overlapping segments of reinforcement bar with substantially accurate and precise measures of overlap is disclosed. The device comprises a first coupling element for coupling to a first reinforcement bar and a second coupling element for coupling to a second reinforcement bar. The device is structured and configured to gauge the amount of overlap between the first and second reinforcement bars upon coupling the first and second coupling elements to their respective reinforcement bars. A guide element may be provided to guide the second reinforcement bar into contact with the second coupling element to aid in coupling the second reinforcement bar to the second coupling element over a substantial distance. A coupling device according tot he invention may comprise two coupling components each having a first opening at a first end and a second second opening at a second end.

Abstract: An apparatus for supporting reinforcement bar comprises a support assembly including a first support and a second support. The first support has a ground-engaging portion. The second support is coupled to the first support so that the ground-engaging portion provides subjacent support for the second support. The second support is structured and dimensioned to support a reinforcement bar in a substantially upright position. A support member is coupled to the support assembly. The support member is provided for vertically supporting another reinforcement bar. A method for supporting reinforcement bar comprises the steps of providing a ditch having a bottom surface and apparatus for supporting reinforcement bar. The method next comprises the step of positioning apparatus for supporting reinforcement bar in the ditch with an end of apparatus protruding from the ditch and a ground-penetrating portion driven in the bottom surface of the ditch.

Abstract: An apparatus for fixating and elevating an interconnected rebar lattice having individual longitudinal and transverse rebar intersections for use as support for poured concrete in highway and other construction. The apparatus including a holding portion having an open ended recess with two opposing walls being generally U-shaped. The recess has a longitudinal axis and is sized and shaped to receive a longitudinal rod. An arc-shaped portion extends laterally outward from each opposing wall and perpendicular to the longitudinal axis of the recess. The arc-shaped portion has a transverse axis and is sized and shaped to receive a longitudinal rod. the arc-shaped portion includes a recess and opposing walls with one wall including a snap-type lock. A locking member has a generally arc-shaped portion and includes a snap-type lock for attaching to the arc-shaped portions and engaging with the snap-type lock of the arc-shaped portions. A leg portion extends downwardly from the holding portion.

Abstract: A plastic wire frame structural clip includes two pairs of diametrically opposed, equally spaced tapered slots formed longitudinally in a peripheral wall thereof for retaining wire frame members in place at their points of intersection. A wire frame structure employing the structural clip and a method for compactly arranging components of a domed wire frame structure for packaging are also disclosed.

Abstract: A reinforcing bar support or hanger for use in a masonry block wall incorporates a pair of supporting arms for contacting the surface of a supporting block and includes vertically extending hanger members terminating in a rebar cradle for receiving and supporting a rebar to be positioned within the wall. The support arms have a transverse length less than the transverse thickness of the masonry wall and the vertical thickness of the support arms is equal to or less than the thickness of the mortar joints between successive courses of the wall. The hanger may include longitudinally extending ridges for assisting in the transverse positioning of the hanger within the masonry block.

Abstract: An apparatus for fixating and elevating an interconnected rebar lattice having individual longitudinal and transverse rebar intersections for use as support for poured concrete in highway and other construction. The apparatus including a holding portion having an open ended recess with two opposing walls being generally U-shaped. The recess has a longitudinal axis and is sized and shaped to receive a longitudinal rod. An arc-shaped portion extends laterally outward from each opposing wall and perpendicular to the longitudinal axis of the recess. The arc-shaped portion has a transverse axis and is sized and shaped to receive a longitudinal rod. The arc-shaped portion includes a recess and opposing walls with each wall including a snap-type lock. A locking member has a generally arc-shaped portion and includes a snap-type lock for attaching to the arc-shaped portions and engaging with the snap-type lock of the arc-shaped portions.

Abstract: A concrete reinforcing bar connector is described in which first and second elongated resilient clip members are formed in a substantially semi-circular "C" shaped cross-sectional configuration. The first and second clip members include opposed open ends spaced apart along their respective center axes. Each of the first and second elongated resilient clip members includes a pair of longitudinal edges that are substantially parallel to their associated center axis and are spaced apart from one another to form a reinforcing bar receiving side opening. The longitudinal edges terminate in substantially radially inward projecting flanges. Inwardly projecting yieldable tabs are formed at each end of the first and second clip members. The tabs are angularly inclined toward the respective center axes of the clip members. The tabs are substantially diametrically opposed to the associated reinforcing bar receiving side openings.

Abstract: A support apparatus for a tendon-receiving duct including a cradle for receiving an exterior surface of a duct therein and a clamp connected to the cradle and extending therebelow for attachment to an underlying object. The cradle is a generally U-shaped member having a length greater than a width of the underlying object received by the clamp. The cradle includes a pair of arms extending upwardly from a transition structure and arranged for receiving an exterior surface of the duct. The clamp includes a pair of clamp members arranged in generally transverse relationship to a longitudinal axis of the cradle. A second pair of clamp members is connected to the cradle and arranged in planar alignment with the first pair of clamp members. The cradle and the clamp are integrally formed together of a polymeric material. The underlying object to which the clamp is connected is a chair or a rebar.

Abstract: A harness system used with steel reinforcement bars or rods to hold them at a desired orientation during and after concrete is poured. The system has two substantially identical harnesses each with its own strap section and a one direction end clasp. A common spacer joins the harnesses together and orients them with respect to each other in different directions. Preferably, the harnesses and spacer are made of a moisture proof plastic material. Two steel reinforcement bars may be oriented in a desired direction--it could be parallel or at right angles to each other--and an appropriate harness system used to hold them in place as concrete is poured over them. One strap of one harness goes around a bar and is put in through its clasp end to a tightened position to hold the bar.

Abstract: A bolster for use in construction including a plurality of leg members arranged in parallel relationship and a beam integrally formed with the plurality of leg members and extending across the plurality of leg members. Each of the plurality of leg members has a foot for contacting an underlying surface. Each of the leg members includes a central body portion, a first leg extending downwardly from one side of the central body portion and a second leg extending downwardly from an opposite side of the central body portion. The foot is formed at an end of each of the first and second legs opposite the central body portion. The foot includes a plurality of pin-like projections extending outwardly from a bottom surface thereof. The beam has a waveform pattern formed across a top surface of the beam and a rectangular cross-section in a plane parallel to the plurality of leg members.

Abstract: An elastic clip to fasten crossed bars, characterized in that it has the form of a simple or double couple of jaws symmetrically or asymmetrically shaped, which comprises seats (D) and hooks (A) placed crosswise and joined together by bodies (B) so that they can be managed simultaneously with fingers and are capable of fastening said either single or coupled crossed bars.

Abstract: A sheet metal spring clip made from a resilient metal rectangular strip which is bent at various locations intermediate its top and bottom edges to cause sections of the clip to lie one above the other in a spaced relationship. The clip has a pair of connected elongated apertures each having unbroken walls normal to flat top and bottom surfaces, which walls serve as bearing surfaces at opposite sides of each of the two connected apertures for mounting of the clip preferably on a vertical support. Spaced handles similarly directed permit the resilient clip to be squeezed for positional alignment on the support. The clip further includes an edge slot in communication with a third elongated aperture, which aperture has similar walls and serves to provide bearing surfaces for retention of a bar normally disposed with respect to the support, after the clip has been positioned at a desired elevation.

Abstract: A retainer clip for use with concrete form tie for retention of reinforcing rods has a one-piece body which includes a header, and first and second clips extending angularly therefrom, spaced apart in a first direction, and defining therebetween a generally u-shaped opening sized to slidably receive a reinforcing rod of generally circular cross section. Each of the clips include first and second prongs spaced apart in directions lateral to the first direction, and at least two prongs of the clips further define therebetween a narrow generally rectangular passage which intersects at least a portion of the u-shaped opening, and is sized to receive at least a notched form tie of generally narrow rectangular cross section. The retainer clip secures the reinforcing rod in position substantially against the form tie in a notch to inhibit both relative motion in the first direction and substantial separation therebetween.

Abstract: A re-bar clamp assembly for use in forming concrete footings that require the reinforcing steel rods to be spaced upwardly at a predetermined height above the ground so that when the concrete is poured into the footings the reinforcing bars will be completely encapsulated by the concrete. One of the forms of the re-bar clamp assembly is formed of a pair of first and second C-shaped clamps that are attached to each other in a stacked vertical orientation but with the open mouth of each clamp oriented substantially 90 degrees away from each other. Thus when the re-bars are snapped into the clamp assembly they will be oriented at 90 degrees to each other. A second form of the re-bar clamp assembly has a horizontally oriented C-shaped clamp that forms a slot for detachably curved finger extending re-bar steel rod. A resilient spring finger on the C-shaped clamp extends inwardly above the stake slot area and fictionally holds the clamp at any predetermined height on the stake.

Abstract: Spacer suited for being embedded in concrete, for use with wire reinforcements placed in the walls of concrete pipes cast in molds. One side of a basic body is provided with radially projecting mounting elements for connecting the basic body with the wire reinforcement. The radially opposite other side of the basic body is equipped with a spacer element projecting in radially opposite direction relative to the mounting elements and terminating by an inclined surface which extends substantially in axial direction for assisting the sliding movement when mounting the mold.

Abstract: A support chair for supporting reinforcement for foundations in which there is a turret shape and a lower base, the turret shape having a plurality of upwardly open slots into which the reinforced rods may be located the shape of each of the slots being such as to provide for interlocking of each rod particularly by providing a narrower part of the slot through which the rod must squeeze to a lower wider part.

Abstract: A chair used for supporting concrete reinforcement rods provides different supporting levels by a change in position thereof, and includes top and bottom planar transverse frame members spaced by two pairs of connecting rods, a pair of first leg members extending from the top frame member, and a pair of second leg members extending from the bottom frame member. Reinforcement transverse members are provided between leg members and connecting rods and are connected to the top and bottom frame members, respectively, thereby improving the strength of the chair.

Abstract: A support device for supporting longitudinal rigid members in a poured layer for example rebar within concrete comprises two V-shaped wire elements which are inverted and have parallel rails welded across the elements. Two lower rails are spaced at the end of the legs of the elements to allow the ends of the legs to be inserted into the ground. The elongate members then rest across the upper rails between two apex portions of the elements which extend upwardly above the upper rails. The rails extend out beyond the elements to provide portions which can be inserted into the ground when the device is rotated through 90.degree. to support the elongate members at a different height from the base layer. The use of a wire structure enables the concrete to be poured around the device without the formation of voids. The use of four legs inserted into a sand or similar base provides great stability.

Abstract: A spacer for welded-wire concrete reinforcement includes an upper pigtail portion, a central shank portion, and a lower hook portion. The lower section of the shank portion slopes outwardly and downwardly to define a nose-like spacing projection to position the wire reinforcement relative to the surface of the concrete mold. The spacing nose also serves as a handgrip for facilitating installation of the spacer on the wire reinforcement. The spacer requires only one pair of intersecting wires for installation and is adapted for use with all mesh spacings, including helical cages, and all wire sizes.

Abstract: A chair for concrete reinforcing rods includes a body having an intermediate portion which includes two spaced apart substantially rectangular planar transverse frame members interconnected by at least one pairs of substantially parallel first connecting members. Four parallel legs extend outwardly from each transverse frame adjacent to four corners of the frame. The legs from one of the frames are aligned with the legs from the other frame so that the legs lie in two pairs of parallel plane. The frame, legs, and the connecting members confine a plurality of channel-like support seats of different diemensions for locating reinforcement rods at different heights and spacings.

Abstract: This invention describes foundations for buildings and like structures employing steel reinforcement. The invention describes a hook leg having an elongate member bifurcated at each end longitudinally of the member to form a pair of extensions with a slot therebetween, the distal portions of the extensions being bent into a curved form extending transversely of the member to form hooks adapted to resiliently engage a pair of reinforcing rods in the reinforcement, the slots in the unbent portions of the extensions being adapted to receive a second pair of reinforcing rods extending transversely of the first pair, whereby to fix the rods in spaced alignment. The invention minimizes movement or collapse of the reinforcement and makes it much easier to assemble the foundation cage thereby saving in labor and material.

Abstract: Improvement in a concrete reinforcing rod holder comprising hollow open-sided sections joined together so as to hold a pair of contacting reinforcing rods prior to pouring concrete to form a reinforced concrete structure, such improvement comprising each such section having a substantially uniform wall thickness and a cavity having inner and outer portions formed therein, the center of the inner portion of such cavity being located so as to coincide with the center of the respective reinforcing rod held therein and the center of the outer portion thereof being radially offset inwardly of that of such inner portion.

Abstract: A spacer for reinforcement mats in a framework has a spacer bar to which there is fastened at least one double-leg clamp the legs of which define an edge-open opening of substantially U shape which is adapted to the cross-sectional dimensions of a bar of a reinforcement mat, the opening having associated with it a spring barrier which closes the opening and holds the clamp in non-detachable manner on the bar of the reinforcement mat.In order to design the spacer for larger stresses while still assuring simple possibilities of manufacture the clamp (3) is developed in the form of a flat plate (5) which is fastened in the region of the bottom of the U-shaped opening (6) to the spacer bar (1) and the barrier is formed by a spring element (11, 11a, 11b, 11c) which is anchored to one leg (7, 8), extends into the opening (6) and can elastically be moved away laterally towards the leg.

Abstract: A rebar saddle for receiving reinforcing bars used in strengthening concrete consisting of an elongated cylinder having at one end a saddle to receive and secure the reinforcing bar and at the other end a blind hole to receive the top of a stake or bar driven into the ground which suspends the reinforcing bar saddle and thus the held reinforcing bar, in position to have concrete poured around it. By the utilization of a plastic or non-rusting rebar saddle, rust which might enter the concrete structure by way of a metal stake which penetrates the ground is halted by the rebar saddle.

Abstract: A support is provided for reinforcing rods or mesh. The support includes a plate of substantially planar construction. A cruciform structure is provided beneath and supporting the plate. The cruciform structure includes a plurality of legs and tips depending from the legs. The tips are adapted to expose a relatively minimal part of the support with the support being embedded in a substance such as concrete. On top of the plate is provided a structure to limit movement of the rod or mesh transversely of the plate. Specifically pairs of pins toed in towards one another are employed or fins are employed with ramps thereon to restrain the movement of rods or mesh which are supported on the plate.

Abstract: A concrete plate assembly, e.g. as load carrying members or for building facades, comprises an inner concrete slab, an outer concrete slab spaced from the inner slab, and at least one main or stress-absorbing anchor embedded and interconnecting the slabs which are reinforced. The intervening space can be filled with an insulation and/or can constitute an insulating air space. According to the invention, at least one of the concrete slabs in the region of the connecting anchor, is provided with a closed reinforcing ring which lies in the plane of the slab, preferably midway of the cross section thereof, the anchor being embedded in the concrete within the reinforcing ring and preferably centrally thereof.

Abstract: A device for securing together crossing re-inforced rods or bars, commonly referred to as rebar, and comprising a spring wire clip having a curved saddle-shaped mid-portion formed to seat on the posterior side of the vertical rebar, i.e., the side away from the horizontal rebar, and having a pair of parallel legs dimensioned to extend across the top of the horizontal rebar and curved in parallel vertical planes to provide concavities to receive, grip and provide vertical support for the horizontal rebar. The clip is formed for manual application in a one-handed operation.

Abstract: A concrete plate assembly, e.g. as load carrying members or for building facades, comprises an inner concrete slab, an outer concrete slab spaced from the inner slab, and at least one main or stress-absorbing anchor embedded and interconnecting the slabs which are reinforced. The intervening space can be filled with an insulation and/or can constitute an insulating air space. According to the invention, at least one of the concrete slabs in the region of the connecting anchor, is provided with a closed reinforcing ring which lies in the plane of the slab, preferably midway of the cross section thereof, the anchor being embedded in the concrete within the reinforcing ring and preferably centrally thereof.

Abstract: In an earth anchor for use for embedding within the ground and to acquire a secure and snug retention therein, the anchor incorporates a shank portion having a helical blade affixed thereto, the blade having a linear cutting edge positioned at a lagging angle off the perpendicular or radius from the said shank portion; said shank portion may contain one or more of the helical blades spacedly arranged there along, or have a series of shank portions that are connectible axially together to form an anchor of greater length. An end cap is designed for mounting onto the upper end of an anchor, and having reinforcing rods secured thereto, and which may act as reinforcement for a concrete pile, foundation, or the like, as poured thereon, with the anchor providing a firm base for this type of constructed structure.

Abstract: A bar support for supporting a plurality of longitudinally extending reinforcing bars and a transversely extending reinforcing bar includes a cross rod which is positioned beneath the transversely extending reinforcing bar and extends along the bar in parallel relationship, and a plurality of bar support chair means which are laterally spaced along the cross rod. Each of the bar support chair means includes a first member having a first vertical leg portion extending above and displaced from the cross rod and a second member having a second vertical leg portion extending above and laterally displaced from the cross rod on the opposite side of the cross rod from the first leg portion. Longitudinally extending reinforcing bars are held between the leg portions transversely to the cross rod, and the transversely extending reinforcing bar is held between the leg portions parallel to the cross rod.

Abstract: A clip for joining crossed reinforcing bars while holding each of the bars independently of the other includes a formed body of resilient plastic material of general U-shape configuration including confronting flange portions carried by an intermediate web portion at one end of the flanges. The interior surfaces of the flanges are formed to include arcuately relieved portions for yieldingly receiving and gripping one bar lying therein in a plane disposed between the planes of each of the flanges. The flanges also include aligned openings formed therethrough for receiving another bar disposed crosswise of the first bar. The flanges include passages leading into the aligned openings to permit the second bar to be lodged in the aligned openings independently of the first bar.

Abstract: A system for the edge-lifting of a horizontally disposed concrete slab either for transport or tilt-up operations, and embodying components which, after positioning in the slab form, become embedded in the slab after the wet concrete is poured and has become set or hardened. Such components include a horizontal reinforcing bar which extends through the edge region of the slab at a low level and imparts reaction force to a slab-lifting anchor bolt thereabove through the medium of a hanger clip at the time that the slab is lifted. The anchor bolt is fixedly positioned in the slab form and the hanger clip is hung on the anchor bolt and serves to support the reinforcing rod therebeneath in cradle-like fashion preparatory to a concrete-pouring operation for slab-forming purposes. The hanger clip of the system obviates the necessity of creating an upward offset in the reinforcing rod and hanging the rod directly on the anchor bolt at the point of the offset.

Abstract: A sandwich panel assembly or slab structure has a pair of steel-reinforced concrete plates generally coextensive with one another and a cushion of insulating foamed synthetic resin therebetween. A tubular anchor is located at the center (centroid) of at least a portion of the panel and is embedded in the concrete plates. At least one slightly flexible elongated auxiliary anchor plate or membrane sheet provides additional fixation of the assembly. This membrane is spaced from the tubular anchor and traverses the resin cushion and is embedded in each of the concrete plates. Metal bars extend through and from the membrane and are embedded in the concrete plates.