Abstract: A connecting structure of concrete block according to the present invention comprises connecting rods buried in divided blocks, and a connector which exerts forces to attract exposed ends of the connecting rods toward each other and maintains a condition where it exerts predetermined attracting forces. In this connecting structure, the connecting rods are attracted toward each other and the divided blocks are brought into contact with each other under pressure by tightening an external thread portion of a first tightening member into an internal thread hole of a second tightening member with a tool after the divided blocks are combined so as to match cavities thereof with each other. A connector according to the present invention comprises a first tightening member which is rotatably fitted over an exposed end of a connecting rod of one divided block and a second tightening member which is rotatably fitted over an exposed end of another concrete block.

Abstract: A fastening member which is designed to receive a downwardly directed component force on the occasion of fixing it to a post or a stud of a building frame, thereby preventing it from being inadvertently floated up, thus ensuring always a stably fastened state of the building board. This fastening member is featured in that the inner wall of the concave portion formed in the substrate of the fastening member is provided at a lower wall portion thereof with an obliquely projected portion which enables a downwardly directed component force to be acted on the fastening member by allowing the projected portion to be contacted with a large head portion of the fixing member at a final stage of fixing it to a post or a stud of a building frame through an opening formed in the bottom of the concave portion.

Abstract: A portable fall-arrest system is designed for convenient attachment and/or removal relative to a concrete beam. The system includes stanchions which are preferably secured to respective anchorages embedded within a reinforced concrete beam. The anchorages may alternatively be used to support other types of personnel safety devices. The preferred embodiment anchorage may be described as a flared coil loop insert having a threaded neck. The loop is disposed inside the concrete beam and the neck extends to the outer surface of the concrete beam. The neck is sized and configured to receive and retain a threaded shaft associated with a safety device. The anchorage provides a convenient and reliable anchor point in a concrete beam without drilling into the beam and/or potentially weakening its structural integrity.

Abstract: The anchor rod (2) has a lateral bulge or projection (5) running along its length and constituting an anchoring element for providing anchoring in a direction perpendicular to the longitudinal direction of the rod (2). Such an anchor is applicable to lifting and handling panels, in particular panels made of reinforced concrete.

Abstract: A fixing element providing a reinforcement connection with a secondary action and settable in a drill hole by a hardenable composition the fixing element has a reinforcement rod, and at least one conical sleeve provided on the reinforcement rod, the at least one conical sleeve having a segment-shaped construction.

Abstract: A device for assembling prefabricated concrete parts has a cable loop anchored at one end to the prefabricated concrete part. The other loop-like end cooperates with a retaining means provided at the front face of the prefabricated concrete part to elastically bend the cable loop approximately at right angle during the fabrication of the prefabricated concrete part, and to release it for assembling. An elongated, U-shaped box (1) having a substantially uniform cross-section is provided as retaining means. The bottom (2) of the box has one or several passages (4) for the cable loop (5) and means arranged in the area of the passages (4) to retain the cable loop (5) perpendicularly to the longitudinal extension of the box (1).

Abstract: A device for lifting prefabricated components, particularly made of concrete, or the like, comprising an anchoring element which forms a female seat of a bayonet coupling device and can be embedded in a component proximate to a perimetric side of the component so that the opening for access to the female seat is directed outward, and an engagement element which has a male end of the bayonet coupling device and can be coupled to the female seat. The engagement element, with the male end coupled to the female seat, protrudes from the female seat with a portion which forms an engagement region for lifting equipment.

Abstract: A connector forces exposed ends of connecting rods buried in divided concrete blocks toward each other. After the divided blocks are combined so as to align respective cavities within the blocks, a tool tightens an external threaded portion of a first tightening member into an internal threaded hole of a second tightening member. The tool thus forces the connecting rods toward each other and brings the divided blocks into contact with each other under pressure.

Abstract: The present invention is an insert to be embedded in concrete for securing an object to a concrete surface. The insert comprises a u-shaped body having a bridge connecting two legs, each leg terminating in a flange. The body provides a flow passage in each leg for allowing the concrete to flow through the legs. Also, the legs are substantially planer and each leg has a rib portion that extends from the plane to provide added strength. The body further comprises a seam joining the bridge to each leg, and the seam is provided with a reinforcing notch. Similarly, a seam joins each leg to each flange, and the seam also has a reinforcing notch.

Abstract: The invention relates to a ductile-failure anchor (2, 32) for concrete elements (3, 39) used in construction. Each anchor (2, 32) includes a plug (4, 34) attached to a securing element (5, 5a or 55) and secured within each concrete element (3, 39). The securing element may included folded bars or a strap 5a. The securing element (5, 55) is placed about the plug (4, 34) and either secured in place (a first option) or held in position about the plug (4, 34) by supports 38 (second option). Each securing element (5, 55) includes at least two regions (10), each region (10) being of a pre-determined length and cross-sectional area. When the anchor (2, 32) is overloaded each region (10) fails in a ductile manner before the burst strength of any part of the concrete element (3, 39) is reached.

Abstract: Concrete inserts are disclosed which are preferably embedded in the rear surface of a concrete wall panel and used to mount and support the wall panel from a building frame. The insert preferably comprises a U-shaped metal housing defining a longitudinally extending channel, the housing comprising two side members in spaced, facing relation to one another and a bight portion between the side members, the bight portion having a longitudinally extending slot therethrough. The insert is adapted to be embedded in the rear surface of the wall panel with the bight portion flush with the rear surface and the side members embedded in the concrete of the panel. The side members are preferably of a trapezoidal shape which provides the insert with high resistance to withdrawal from the concrete.

Abstract: A fixture (structural element) is readily mounted to a surface of a substrate (such as concrete) by embedding and adhering an internally-threaded anchoring element (sleeve) in a hole in the substrate. Preferably, the anchoring element is recessed below the surface of the substrate ("embedded"). To aid in inserting the anchoring element into the hole, an insertion tool may be employed. The system is re-usable, in the sense that the fixture can be removed and replaced, or the fixture can be removed and the hole in the substrate covered. In the latter case, a gauge element may be inserted into the anchoring element prior to sealing over the hole. A template is provided to ascertain the depth that the anchoring element is embedded within the substrate, as determined by the cross-sectional dimension of the gauge element at the surface of the substrate. Alternatively, the insertion tool can remain in place, within a bore in a substrate, mated to the anchor element.

Abstract: A lift pin insert assembly is releasably mounted upon a mold member for casting a manhole section. The mold is filled with concrete, which surrounds and embeds the insert assembly in the cast member. The insert is configured to receive a lift pin, which is automatically moved to a locked position when lifting tension is applied. A reinforcing support assembly includes at least a face plate and a metal rod of suitable thickness at least partially encircling the insert, and anchored either to the face plate or an additional support plate. The support assembly distributes the forces applied by the lifting force to the cast member substantially uniformly over a large surface area, significantly increasing the weight load capable of being lifted by a given lift pin without increasing the size and/or diameter of the lift pin.

Abstract: A slotted insert having a U-shaped frame and a plastic nut box forms a concrete cone having a depth which is substantially equal to the height of the insert by utilizing tapered feet. The interior sidewalls of the U-shaped frame are formed with indentations or through holes, and the plastic nut box is formed with first projections that are in register with and held by the indentations or through holes. As a result, assembly of the nut box into the frame is accomplished by snapping the nut box into the frame. The nut box, which is also formed with a second projection that fits within the slot of the insert, is formed from a lid that is plastic welded to an open box.

Abstract: A fixing element has a shank having a rear end and a leading end, a holding element arranged on the rear end of clamping an article to a building component, at least one expansion region extending from the leading end in a longitudinal direction for part of a length of the shank. The expansion region is formed by a longitudinal slot with a base surface raising toward the leading end. A expansion member is inserted in the longitudinal slot. The base surface slopes upwardly and ends at an outer circumference of the shank at a distance from the leading end. The expansion member is formed as a wedge with a length substantially corresponding to a lenght of the longitudinal slot and lies on the base surface so as to be displaceable toward the leading end. The wedge has an outer surface provided with roof-shaped teeth which project beyond the shank at least by a part of a height of the teeth.

Abstract: An anchoring device for the construction industry has an anchor rail that is C-shaped in cross-section and has a hollow interior so that the anchor rail has a back and legs connected to the back. The legs have angled free ends pointing toward one another and delimiting therebetween a longitudinal slot. The back has outwardly extending projections, each having an opening. Each opening has a double cone rim widening radially outwardly from the opening with radially outwardly diverging first and second conical surfaces. The double cone has an outer edge facing outwardly relative to the hollow interior. A plurality of anchors is connected to the anchor rail, whereby each one of the anchors is received in one of the openings and attached thereto by plastic material deformation of the anchor rail and/or the anchor. The anchor has a cylindrical shaft with a head and a base opposite the head. The base of the shaft is positioned in the opening.

Abstract: A supporting device is used to support a floor form assembly on surrounding walls of a structure and includes a plurality of hangers fixed spacedly to the surrounding walls in a horizontal plane. Each of the hangers has a first engaging portion. An elongated mounting seat has a generally U-shaped cross section which has a first arm side, a second arm side, a base side, and an open side opposed to the base side so that the hangers can pass through the open side of the mounting seat. The first arm side has a second engaging portion so that the first engaging portions of the hangers can engage the second engaging portion in order to retain the mounting seat to the hangers. A fastening apparatus is mounted to the external face of the base side of the mounting seat. A support member is secured to the mounting seat by the fastening apparatus. The support member has a top portion which is formed with a supporting plate so that the floor form assembly can be rested on the supporting plate.

Abstract: An anchorage device for keeping a truss in place with respect to a poured concrete body having an elongated housing including a longitudinal slot and anchorage members rigidly mounted to the elongated housing thereby permitting the anchorage device being anchored in the poured cement. The anchorage device also having a connecting plate assembly with a strap including several openings for fastening a truss to the plate assembly. A lifted spacer area with two slots or cuts allows the strap through. The plate assembly is slidably mounted along the slot for its proper positioning after the truss are positioned.

Abstract: A member (1) for insertion into a borehole (9) in a receiving material (10) has an axially extending generally cylindrical hollow body (2) closed at its leading end (4) and open at its trailing end (5) and into which a mortar mass and anchor member can be inserted. The hollow body (2) has a sieve-like mesh wall. At least one circumferentially extending strip (8) of a compressible elastic open pore material is secured on the outside surface of the hollow body (2) for cleaning the surface of the borehole while the member is inserted into the borehole.

Abstract: A grave marker and grave marker footing leveling device is described, in which an elongated threaded rod is provided with a tool engagement head at a top end. A footing lifting abutment is located on the rod spaced toward the bottom rod end. A nut is threadably engaged with the threads and is spaced toward the bottom end of the rod from the abutment. A tubular spike rotatably receives and covers an axial length of the rod from the nut to the bottom end of the rod. In a preferred process step, the rod is placed in position within an excavation including a footing depression and a sub-footing depression. Wet concrete fills the sub-footing depression up to a level at which the nut on the device is captured. An impervious sheet is spread over the wet concrete in the sub-footing, before the grave marker and footing are set. In alternate forms the device is provided individually, as an element in a combination with a grave marker and footing.

Abstract: A support member for a concrete structure comprises a T-shaped insert defining a T-shaped internal volume. A nut is inserted in the transverse portion of the internal volume and end caps are placed over the ends of the insert to fully seal enclose the internal volume. The insert is then placed within a form for a concrete structure such that the base surface of the T-shaped insert will be coplanar with a surface of the concrete after the concrete has been poured into the form and set. The base wall of the insert is then removed, thus exposing the T-shaped volume. The distal end of a bolt can be inserted into the insert and fixed to the nut. The proximal end of the bolt extends out of the insert and beyond the surface of the concrete and can be attached to equipment or other structure which is to be supported on the concrete structure.

Abstract: An improved mounting apparatus which is adjustable for providing a safety breakaway capability for the attachment of post assemblies normally adjacent to a road or highway location wherein the vertical post assembly includes mounting holes located in a foundation therebelow. The improved breakaway apparatus includes a plurality of anchors fixedly secured to the foundation and a breakaway coupling interconnecting the anchor to the vertical post assembly. The breakaway coupling includes a weakened section to facilitate breaking thereof responsive to a lateral force exerted adjacent to the lower end of the vertical post assembly. Securement of the breakaway coupling to the anchor is provided by a unique lateral and vertical adjustment design by providing of a lateral clearance space between the lower support member and the collar aperture while at the same time providing an annular clearance space between the coupling support shoulder and the collar lip within the containment bore.

Abstract: An attachment anchor assembly for securing a component (15) to a base material (U) includes an axially extending anchor rod (11) having an axially extending anchoring region and a centering sleeve (18) laterally enclosing the anchor rod in a sealing manner and spaced from the anchoring region. A sealing element (19) is located between the centering sleeve (18) and the anchoring region and laterally encloses the anchor rod (11) in a sealing manner. The sealing element (19) has a transverse sealing surface facing towards the anchoring region and the sealing surface can be displaced axially towards the centering sleeve.

Abstract: An insert for casting in a body of concrete to provide for attachment to a building structure. The insert is formed of a slotted face plate welded to a channel with enclosed ends and an access opening for insertion of an attachment device for attachment to the building structure. The insert is also provided with anchors for anchoring the insert in the concrete body.

Abstract: A support member for a concrete structure comprises a T-shaped insert defining a T-shaped internal volume. A nut is inserted in the transverse portion of the internal volume and end caps are placed over the ends of the insert to fully seal enclose the internal volume. The insert is then placed within a form for a concrete structure such that the base surface of the T-shaped insert will be coplanar with a surface of the concrete after the concrete has been poured into the form and set. The base wall of the insert is then removed, thus exposing the T-shaped volume. The distal end of a bolt can be inserted into the insert and fixed to the nut. The proximal end of the bolt extends out of the insert and beyond the surface of the concrete and can be attached to equipment or other structure which is to be supported on the concrete structure.

Abstract: An anchor assembly for use in adhesively bonding an anchor consisting of a threaded anchor member having an adhesive release coating its threaded portions and having a hollow end dimensioned to receive the threaded portion connected to the end of the threaded portion and extending from it to provide a space within the adhesive in which the threaded portion of the assembly can be contained.

Abstract: A metal connector includes a main metal member in the form of a tube which may be passed through a hole formed in a wooden member, a stop welded to one end of the main metal member, elongated holes formed in the lateral sides of the main metal member in the vicinity of its other end so as to permit a pin to be passed through it, and a tightening bolt threadedly engaged in the other end of the main metal member so that its distal end abuts against the pin. Alternatively, a metal connector includes a through-hole formed in the lateral side of the main metal member in the vicinity of its one end so as to be passed through by a bolt, and a tightening bolt threadedly engaged in the other end of the main metal member so that the distal end of the bolt is abutted against the pin when the bolt is tightened. Consequently, the wooden members of a construction may be connected easily and tightly to one another, while the mounting of the metal connector may be simplified with a view to improving the operating efficiency.

Abstract: A heat insulating support tool is provided for a concrete wall structure. The support tool may include a pedestal member having a through-hole extending axially through the pedestal member, a fixing rod-like member extending through the through-hole of the predestal member, and a spacing holding rod-like member embedded in the concrete wall. The fixing rod-like member may include a rotating member at a front end thereof and an enlarged head member at a rear end thereof. In addition, a connecting device may be provided for connecting one end of the spacing holding rod-like member to the fixing rod-like member so that the connection of the spacing holding rod-like member and the fixing rod-like member can be released by rotating the rotating member.

Abstract: A concrete building block (2) has complementary projections (10) and recesses (12) to cause it to interlock with other blocks (2). A T-shaped channel (16, 26) on the top surface (4) receives an anchor member (32). A projecting end (36) of the member (32) may be secured to an anchor cable (104). The ends of a metal cable (22) are embedded in the block (2) with an eye portion (24) projecting into an increased depth channel portion (20). The lower surface (6) of the block (2) has parallel channels (28) for receiving the tines of a forklift. The channels (16, 28) have breakaway walls (18, 30) at their outer ends, which are not broken away unless the channels (16, 28) are to be used. The walls (18, 30) prevent concrete from flowing out of the channels (16, 28) when reinforcing concrete is poured through vertical openings (14) in the block (2). In molding the block (2), slugs (86) are releasably attached to opposite mold walls to form the openings (14).

Abstract: A device for reinforcing a rear surface of a wall includes a receiving bag (4) attached to one end of an axial extending filling stub (1). Webs (3) are attached to the receiving bag (4) and the filling stub (1) so that the webs and receiving bag can be folded from a radially outwardly extending position toward the axis of the filling stub whereby the receiving bag and the webs can be folded into a position so that the combination of the webs (3), the receiving bag (4) and the one end of the stub (1) can be inserted through an opening (6a) in the wall (6). In the inserted position, the webs (3) return to the radially outwardly extending position along with the receiving bag (4) and the bag is filled with a hardenable mass (7) through the filling stub (1). A fixing element (5) is inserted between radially and circumferentially extending ribs (2) on the filling stub (1) located on the opposite side of the wall from the receiving bag (4).

Abstract: An apparatus for joining precast concrete units. A precast concrete unit, such as a section of pipe, decking and pavement includes a plurality of spaced, longitudinally aligned tubular members. The ends of each concrete unit are flush and are bounded by rounded edges to prevent chipping. The ends of the tubular members are flush with the end of the concrete unit. When two of such units are to be joined together, a guide member is inserted in one end of each tubular member on one concrete unit while an internally threaded insert member is inserted into each end of the tubular member in a second concrete unit. The guide members and insert members have axial apertures with the aperture in the insert member being internally threaded. The two precast concrete units are brought together so that the guide member on one concrete unit enters into the ends of the tubular members containing the inserts in the second concrete unit.

Abstract: A fastener system for temporarily securing a reinforcing beam or the like to a poured concrete structural member includes an anchor to be set in poured concrete with an exposed handle portion free of said concrete, and a shaft with a slotted end for receiving the handle portion. A spring loaded pin in the slot retains the handle portion in interlocking engagement with the shaft. An opposite end of the shaft secures a strongback beam to the concrete structure.

Abstract: A concrete insert having a U-shaped part with two legs and a bridge between them, the bridge having a hole in which an internally threaded coupling is engaged with a friction fit, a bolt threaded in the coupling to extend above the bridge so that the position of the coupling with respect to the U-shaped element can be set by tapping the bolt and held by friction against the side of the hole in the bridge.

Abstract: A flat steel anchor for a pre-cast concrete component is comprised of an anchoring portion to be positioned within the concrete component and a connecting portion protruding from the concrete component. The anchoring portion has lateral bars that enclose therebetween a first opening with a first opening cross-section in a plane of the flat steel anchor. The lateral bars are oppositely bent relative to one another and relative to the plane of the flat steel anchor. The respective outer curved planes of the lateral bars form anchoring surfaces of the anchoring portion. The first opening has a second opening cross-section in a plane perpendicular to the plane of the flat steel anchor defined by respective inner curvatures of the lateral bars. The connecting portion has a second opening for receiving a lifting device.

Abstract: An axially extending sleeve (1), for use as an anchor secured by grout or a hardenable mass in a blind bore (2a) in a structural component (2), has an outside surface with a radially outwardly projection extending in the axial direction of the sleeve. The sleeve has a closed first end leading in the insertion direction and a trailing second end. The projection extends from the second end in the axial direction toward the first end. An elastic layer (3) is placed over the surface of the structural component containing the bore and a hole (3a) in the elastic layer is aligned with the bore in the component. When the sleeve (1) is inserted into the bore (2a), the projection (1d) forms a passageway through the elastic layer, so that air and excess grout can escape from the bore through the elastic layer.

Abstract: A flat steel anchor for precast concrete parts, with the anchor having at least two hook-shaped bent sections formed in the anchoring area and extending in directions opposite to a vertical plane through a point intermediate the front and back of the anchor. The bent sections are of various shapes and curved downwardly and inwardly to jointly define a continuous opening closed on either side to receive and retain a reinforcing rod.

Abstract: A blind riveting nut comprises a hollow shank portion and a setting head thereon at one end thereof. Towards the other end the shank portion has an internal screwthread for receiving the pulling mandrel of a blind rivet setting tool while at the end remote from the setting head, the shank portion has an element which closes off the interior of the shank portion at that end but which can be removed from its closure position. The closure element may be of various configurations including a ball and a portion of closure material fitted over the appropriate end of the shank portion.

Abstract: Attachment elements to be fixed to panel-shaped structural components by a hardenable material include an axially elongated dowel sleeve (1) forming a passageway extending from a second end toward a first end. An axially extending annular part (2) encircles the dowel sleeve. A bag-like member (3) is secured to the annular part and to the dowel sleeve adjacent the first ends thereof. The bag-like member is inserted through a borehole in the structural component from an outer side thereof. The bag-like member can be filled with a hardenable material providing a gripping action with an inner side of the structural component. The bag-like member, when filled with the hardenable material, has a first side facing the inner side of the structural component and an oppositely facing second side with openings in the first side being larger than the openings in the second side.

Abstract: A rope anchor device for a swimming pool having a vinyl liner wherein a flat base plate has at least two integral stems projecting rearwardly from the plate and extending through the swimming pool wall. A nut is threaded on each stem at the back or outside of the swimming pool wall to mount the plate securely against the inside of the swimming pool wall. A rope anchor eyelet plate is in turn mounted on the base plate, with the linear clamped therebetween, by at least two threaded fasteners which engage the anchor plate and are threadably engaged in bores extending coaxially through the stems. The base plate can be made of cast and machined metal or injection molded plastic. Where the base plate is made of metal, the bores are internally threaded. Where the base plate is made of injection molded plastic, self-tapping screws can be used and hence the bores need not be internally threaded.

Abstract: A mortar-anchored system for fastening to supports and lightweight building blocks, perforated bricks or masonry made of aerated concrete. The mortar-anchored system includes a bush segment for engaging the side walls of a wall bore hole in the building material and having a hollow center for insertion of mortar. A fastening screw is then inserted through the opening in the bush segment into the wall bore hole and is then anchored when the mortar dries.

Abstract: A device for attaching a plate or cap over an opening, comprising a rod or wire extending from the front through the plate or cap. On the end of the rod or wire extending into the opening, there is provided a spring clamp whose end remote from the rod or wire has a sharp point. The plate or cap has a closeable opening therein for introducing a foamable resin thereinto, which foamable resin forms a foam in the plate or cap and in the opening and, thus, seals the opening.

Abstract: A cup-shaped anchor is provided which has a large pullout resistance because it translates vertical pullout force placed on the anchor into lateral stress within the concrete slab. Preferably, the anchor is frustoconical and provided with two pairs of oppositely aligned holes located in the walls of the anchor which slant generally outwardly from its base. Bracing bars are preferably inserted through the holes to both reinforce the concrete slab and further increase the pullout resistance of the anchor. Preferably the bracing bars are separate, electrically non-conducting bars to electrically isolate the anchor and support members. The anchor permits elements to be attached to a face of a concrete slab by means of a threaded hole which is sealed against concrete entering during pouring.

Abstract: For power transmission between a wooden beam and another building component, for example another wooden beam, a blind bore and a vent bore opening into the bottom of the bore are formed in the wooden beam. An insert body is pushed into the blind bore. This body comprises two spaced end plates whose outer cross-section corresponds to the cross-section of the blind bore, and at least one, preferably four, power-transmitting bars whose ends are welded to the opposing sides of the end plates. Bar dowels are then driven in from the side of the wooden beam so as to penetrate spaces between adjacent power-transmitting bars. Epoxy resin is then pressed into the blind bore from the outside until the entire blind bore and preferably also part of the vent bore are filled in with resin. When the resin has hardened, the resin body and the steel parts form a composite body. Connecting members may be attached to the outer end part.

Abstract: An assemblage for setting an anchor in a mass of concrete is shown. It comprises an anchor and a setting bolt, which have mating threads. Once the anchor is set, other bolts can replace the setting bolt and then be used outside the wall for various purposes. For instances, with a bolt that extends outside the wall, the system can be used to erect a scaffold.

Abstract: The duct forming sleeve assembly is used in a process for providing passageways in concrete structures for routing of pipes, cables or conduits therethrough. The assembly comprises a rectangular base plate member which is positioned within the concrete in a plane parallel to a surface of the concrete and attached to a wooden or metal floor deck, prior to pouring the concrete. The base plate has screw holes used for mounting the base plate to the deck and is provided with a plurality of cutout areas each of which is capable of accepting a cylindrical sleeve member therein. A plurality of cylindrical rigid sleeve members, equal to the number of cutout areas within the base plate are received in the cutout areas of the base plate along an axis which is perpendicular to the plane of the base plate.

Abstract: An axially elongated performed tube having a leading end and a trailing end. The tube is restricted at its leading end and open at its trailing end for the insertion of an adhesive and a ram to extrude the adhesive. The tube is selectively divided along its length into a plurality of porous axial sections, each section having a porosity different from that of its adjacent section, enabling selected distribution of the adhesive in selected areas.

Abstract: Method and apparatus for anchoring an internally threaded shank member into a hole in concrete by using a capsule of epoxy. A chisel point on the anchor shank is utilized to break the capsule of epoxy in the hole in the concrete after a structure is attached to the top of the shank in a threaded fashion and rotated downwardly into the hole by an impact wrench or other rotary tool having an adjustably chuck attached thereto. A stop is provided on the structure connecting the power tool to the shank for preventing relative rotation in one direction of the shank with respect to the power tool once the threaded connector is adequately threaded into the shank the shank's internally threaded depression.

Abstract: The disclosure is directed to a device for forming a post-receiving cavity in a solid material during the solidification thereof with the device including a clamping element having first and second side walls disposed in facing relationship to each other, with each of the side walls having a vertical extent, and a resilient wall which extends between the first and second side walls and interconnects the first and second side walls intermediate the respective vertical extent of each side wall to thereby divide each side wall into an upper end portion and a lower basal portion. The resilient wall is constructed and configured to cause the upper end portions of the side walls to move outwardly in response to application of an inward lateral force to the lower basal portions of the side walls and also to cause the upper end portions of the side walls to be maintained at a predetermined distance from each other in the absence of any inward lateral force being applied to the lower basal portions.

Abstract: The drainage channel comprises a channel body (1), cast frame (2) and cast grid (3). The support surface of the side walls (11) of the channel body (1) are of stepped construction, with a raised external supporting rib (13). The frame (2) is rectangular, with a lowered support rail (28) as support for the side ribs (30) of the grid (3). On the outside the frame (2) has detachably fastened brake lugs (23), which in the installed state prevent displacement of the frame (2). Locking bar holders (44) of roughly H-shaped cross-section are disposed in the side walls (11) some distance below the support surface. These locking bar holders form a closure between the interior of the channel body and the exterior. On the inside a side wall (79) forms an obtuse angle with the wall (75), so that the locking bar (45) can easily be turned into the inner recess (78).

Abstract: A method of pre-mounting an anchorage device such as a spike into a concrete object said anchorage device being adapted for fastening the object onto a support surface. The method includes the steps of moulding and vibrating the object (1) in a mould, there being formed a guide recess (4) in the object and the object is being removed from the mould prior to curing the concrete.According to the invention there is formed, during the casting of the concrete object (1), a channel (5) extending from a location centrally of the bottom of the guide recess (4), practically through the object and to a location adjacent that surface of the object turned away from the guide recess. Then the object is removed from the mould and the concrete is cured. On forming the channel, this is given a tapering portion (8, 9) at the end thereof facing away from the guide recess and an approximately uniformly thick portion at the end thereof closest to the guide recess.