Abstract: A fastener includes a main body having a tubular portion and a split portion that extends from a lower end of the tubular portion, and longitudinally includes a tapered section that tapers in a direction towards the tubular portion. The fastener further includes an expansion sleeve annularly surrounding the split portion, wherein the expansion sleeve longitudinally extends to a lower end of the tapered section.

Abstract: An anchor for arrangement in a building element, in particular in a wall, in a ceiling or in a precast concrete part. The anchor includes an anchoring element for anchoring in a receiving opening of the building element comprising an undercut, a connecting element for connection to a supporting element, in particular to a platform for formwork, or to a support arm for a protective shield, or to a lifting element for lifting the building element. In some aspects, the anchoring element is movable between an anchoring position for anchoring in the receiving opening and a release position for removal from the building element. The anchor may additionally include a securing element which blocks the movement of the anchoring element between the anchoring position and the release position in a first position and releases the anchoring element in a second position.

Abstract: An expansion anchor is provided, which is fixable in a borehole, including an expansion sleeve for anchoring on a wall of the borehole and including an anchor bolt which is guided through the expansion sleeve and which has an expansion area for expanding the expansion sleeve, the expansion sleeve having a first annular groove on its outside, which extends up to the front end face of the expansion sleeve facing the expansion area. According to the invention, it is provided that the expansion sleeve has a second annular groove on its outside, and that an annular connection piece is situated between the first annular groove and the second annual groove.

Abstract: An adjustable fastener system generally includes an anchor component, a drive component, and a finish head component. The finish head component is threaded onto the anchor component to form the completed fastener that may be adjusted to different heights. The drive component is used to drive the anchor component into position prior to adjusting the finish head component. In some embodiments, the drive component may be used before the finish head component is installed, and in other embodiments, the drive component may be used with the finish head component installed. The adjustable fastener system saves time and effort at a construction site, eliminates the amount of prep work, and eliminates the need to have multiple different fasteners on site. The adjustable fastener system may be used for installing insulation panels over concrete in a roofing system as well as other applications.

Abstract: A blind bolt and tool is used for fastening a bolt through a hole in a structure when only one side of the structure is accessible. A receiver is formed on the tip end of a bolt shaft opposite from a bolt head. Internal threads are formed within the receiver proximate an outward end, and a hex socket is formed in the inward end of the receiver. External threads and a guide are formed on a tip of the tool, and the external threads mate with the internal threads in the receiver to hold the bolt during installation. A hex key on one end of the tool engages the hex socket in the receiver so that the tool may impose a torque on the bolt when a nut is being tightened on the bolt. In another embodiment, a splined tip is formed on the end of the bolt. The tip is designed to shear off when a sufficient torque is applied. Also, a shim is configured to fit between structures held together by the blind bolt.

Abstract: A deformable insertion fastening arrangement for insertion into a planar ply structure and for retention thereon by subsequent deformation, including a retention component having a passthrough opening passing through it along a passthrough axis and having a fastening configuration for fastening a further component thereonto; the retention component having at least two portions that are radially displaceable relative to the notional passthrough axis that passes centrally through the passthrough opening, the retention component, when considered in its undeformed initial state, is embodied segmentedly in a circumferential direction around the passthrough axis; at least two segments, constituting the radially displaceable portions, being connected to one another by at least one connecting configuration deformable in a circumferential direction; at least one segment being displaceable in a radial direction away from the passthrough axis against a shape inertia force of the at least one connecting configuration, ac

Abstract: An anchor (1) that can be secured in a drilled hole (2), with an expansion sleeve (10) for anchoring onto a wall of the drilled hole, and with an anchor bolt (20) that passes through the expansion sleeve and that has an expansion section (38) for widening the expansion sleeve, and it also has a sleeve stop (22) that limits axial movement of the expansion sleeve away from the expansion section (38) is provided. At least one rotary catch (24) is provided which non-rotatably couples the expansion sleeve (10) to the anchor bolt (20), and the expansion sleeve has at least one external thread helix (14) for creating an undercut in the wall of the drilled hole.

Abstract: An implant for intersomatic fusion of two adjacent vertebrae, particularly by an operation that was performed in posterior manner. The implant has a first implant part and a second implant part that is adjustable relative to the former, for the purpose of distraction. The first implant part and the second implant part are structured so that they supplement one another, in a complementary manner, in the non-distracted state, to form a pipe that is divided in the longitudinal direction. Guide surfaces that extend radially in the distraction direction, and rest against one another are formed on the first implant part and the second implant part. The relative position of the guide surfaces is fixed in place. An instrument for the placement and distraction of the implant is also provided.

Abstract: A rock bolt anchor includes a top portion permanently fixed to a bottom portion. The top portion carries a package of resin. A spring-loaded mechanism pressurizes the package and forces the resin out when the package is lanced. The bottom portion main body carries a pair of opposed outer shells in a dovetail joint on opposed tapers. The annulus adjacent to the rock bolt anchor is sealed by top and bottom bulkheads. The bottom portion is threaded onto a rock bolt. A hollow and ported lance is threaded onto the exposed end of the rock bolt. The combination is inserted into a drilled hole and the rock bolt rotated. The lance rises and pierces the package releasing into the sealed annulus. Continued rotation of the rock bolt, forces the main body down and the outer shells up the tapers compressing them against the wall of the drilled hole.

Abstract: An expansion dowel having a cylindrical expansion body (1) having a through-bore (3) and formed of at least two segments (4a, 4b) connected with each other, an additional expansion element (7) located in a recess (8) formed in an outer profile (6) of the expansion member (1) and having a radial depth of the recess (8) diminishing in a setting direction (S) of the expansion dowel; the additional expansion element (7) having a radial extent at least partially greater than a maximal dept of the recess (8).

Abstract: A plumbing tool is constructed for installing and removing plumbing parts such as tub and sink drains that are engaged together by conventional right-hand threads, one within another. The tool can also be constructed to remove or install left-hand parts. The plumbing extraction and installation tool has an elongated core member with a stud at one end, a cylindrical intermediate section threaded with right-hand threads, and an outwardly flared frustoconical section at the end opposite the stud. A barrel member is internally threaded with right-hand threads at one end and a radial channel is defined in its inwardly facing wall. This channel is bounded by a radially inwardly directed annular lip at its lower extremity. A plurality of wedge members have hooks or tangs at their upper proximal ends that are captured between the barrel member and the core member.

Abstract: An expanding bush and captive bolt assembly (1), comprising a bolt (2), a generally cylindrical bush (4), and a ring clip (6) that retains the bush on the bolt. The bush (2) has an inner surface with a portion (22) that has a frustoconical taper, a channel (12) that extends circumferentially inside the bush, and an expansion split or slot (7) so that the bush may be expanded radially. The bolt (2) has a threaded portion (10) for engaging with a socket that has a matching thread, a head (8) by which the bolt may be rotated to tighten the bolt (2) to the socket and to squeeze axially the bush (4), a shaft (18,20,23) between the head (8) and the threaded portion (10), said shaft having a portion (20) with a taper that engages with the tapering portion (22) of the bush to expand the bush (4) as it is squeezed axially between the taper (20) and the socket, and a channel (16) that extends circumferentially around the shaft and which opposes the channel (12) of the bush.

Abstract: A spare tire carrier lock including a split body collectively formed of at least two body sections, wherein the exterior shape of the split body is complementary to the shape of a predetermined socket of a hoist shaft of a hoist assembly for a spare tire carrier so as to be drivably received into the socket. The body sections are resiliently conjoined to form the split body via at least one, preferably two, resilient members. The split body has a first end at which a tapered seat is formed. A body shaft runs from the seat to a second end of the split body. A tapered armature is shaped to be seatably received by the seat and is provided with a threaded bore for being aligned with the body shaft. A head is located at the second end of the split body having a diameter which prevents its being received into the socket. A head shaft is provided in the head for being aligned with the body shaft, wherein opposite the split body, the head shaft is enlarged to form a recess.

Abstract: An expandable anchor assembly is provided for anchoring the threaded end portion of an elongated roof bolt in a borehole. The anchoring assembly includes a hollow outer sleeve in the form of a plurality of symmetrically arranged, longitudinal segmented wall portions with exterior gripping teeth and an inner expander sleeve in the form of a corresponding plurality of longitudinal wall portions symmetrically arranged about a central axis to define an inner threaded cylindrical section. The inner sleeve is captured within and moveable axially relative to the outer sleeve. As the threaded end portion of the elongated bolt is inserted into the inner threaded cylindrical section of the inner sleeve from the trailing end to the leading end thereof, the inner sleeve expands over and clamps around the threaded end portion of the elongated bolt.

Abstract: A bail element (10) having a medial portion (12) with a pair of legs (14, 16) extending integrally therefrom and a mechanical expansion anchor having a pair of shell halves (68, 70) and tapered plug (80) held in assembled relation by the bail. The bail legs are identical to one another and, prior to assembly with the shell halves and plug, have three distinct, linear portions (46, 48, 50) respectively extending at preferred angles of about 10.degree., 36.degree. and 12.5.degree. with respect to lines parallel to the bail centerline (A--A). The bail medial portion includes a pair of upstanding portions shown in a first embodiment (34, 36) and a second embodiment (54, 56) for puncturing a resin cartridge which may be installed with the anchor.

Abstract: An anchor comprising a core including first and second ends and a cylindrical portion between said ends, the first end including means for engaging with a body to be anchored, and the second end terminating in a portion which is enlarged gradually. A sleeve engages telescopically around the cylindrical portion and has an end adjacent the second end of the core. Expanders which normally form an annulus when positioned together are provided, the annulus engaging slidably with the cylindrical portion. Each of the expanders has an engaging end which abuts on and engages with the end of the sleeve. Means is provided on the expanders for at least provisionally binding them around the core.

Abstract: Sleeve anchor comprising a tapered stem increasing in section to form a head at one end, at least the end portion of the stem remote from the head being threaded, a tubular sleeve placed over said stem being retained between the head and a threaded retaining member screwed onto the threaded end of the stem and in which the retaining member may also serve to hold a component to be attached to the anchor. Ratchet teeth are provided on the inner face of the retaining member and on the end of the tubular sleeve adjacent to the retaining member whereby in operation the two sets of teeth are engaged so that the sleeve is positively rotated with the retaining member and the outer wall of the tubular sleeve is further provided with radially-directed cutting teeth which engage the walls of the bore hole into which the anchor is inserted as the tubular sleeve is simultaneously rotated and expanded by the action of the tapered stem.

Abstract: A split gland having only three parts to obtain effective stability to relative motion of the constituent half-gland members. A large area clamping ring generates a clamping force effective to maintain the alignment between male and female mirror image half-gland members. Ease of manufacture and use result from the reduction in complexity of the present invention.

Abstract: A mine roof expansion anchor having a conventional tapered camming plug and radially expansible shell having associated therewith an element which resiliently engages the wall of a bore hole as a roof bolt carrying the anchor is inserted in the hole. The resilient element may be incorporated in the structure of a bail having bore wall engagement portions position in a plane closer to the lower end of the expansion shell than the lowest position of the tapered plug after full expansion. The engagement portions may comprise outwardly and downwardly extending portions of the bail legs, either at the terminal ends or pierced from the bail material slightly above the ends. In another embodiment, the engagement portions extend from a support nut positioned on the bolt below the lower end of the shell.

Abstract: A fastener system for precision mounting of body parts to a frame in spite of unavoidable manufacturing variations, composed of an anchor hole in a frame and an axially adjustable screw anchor seated stationarily into the anchor hole. The axially adjustable screw anchor includes a base for seating into the anchor hole in the frame, an axial sleeve provided in the base, a plunger slidably mounted within the axial sleeve, and a gap connected with the plunger for providing a mounting surface for the body part being mounted to the frame. the plunger and the cap are each provided with an axial hole for a common self-tapping screw-type fastener. In operation, when a tool brings the body part into a predetermined precise relationship with respect to the frame, the body part engages the mounting surface of the cap and causes the plunger to slide into the axial sleeve exactly the right amount so that the mounting surface of the cap is located precisely where the body part is to be mounted for a precise fit.

Abstract: An expansion anchor capable of being expanded by thrusting a lock plug into a contacted portion to spread a clamp member having acutely angular peripheral edges. When the anchor is expanded within a hole in a rigid material such as concrete, the angular edges of the clamp member bite into the rigid material, so that the anchor is no longer removable from the rigid material.

Abstract: This invention relates to a rock anchor which includes an elongated element which is composed of a plurality of elongated tension members which are arranged around the long axis of the elongated element in a circumferential spaced relationship to provide a passage through the elongated element, slots between the tension members which extend over the length of the elongated element, an anchor at one end of the elongated element, for holding the element in a hole and a tensioning arrangement at the other end of the element for use in tensioning the elongated element in the hole. The anchor is preferably a wedge anchor and the invention extends to a method of anchoring the rock anchor in a hole by means of a rod which is passed up into the elongated element from the mouth of the hole to tension the elongated element and activate the wedge anchor to lock the anchor against the side of the hole to hold the elongated element in the hole under tension.

Abstract: A metallic threaded composite fastener, particularly suited for high temperature applications, has a body member made of high temperature-resistant composite material with a ceramic coating. The body member has a head portion configured to be installed in a countersunk hole and a shank portion which is non-circular and tapered. One part of the shank may be non-circular and the other part tapered, or the two types of surfaces could be combined into a frustum of a non-circular cone. A split collar member made of high strength, high temperature-tolerant metal alloy is split into two halves and the interior of the halves are configured to engage the shank. The exterior of the collar has external threads and the upper portion of the collar has a circumferential groove which receives a lock ring to secure the collar halves to the shank.

Abstract: A peg for anchoring within a hole having an undercut portion comprises a body (1) with an external end (5) for mounting an element thereon and a tapered internal end (11) widening out towards the inside of the hole, a locking ring (2) formed from segments disposed about the body and intended to pivot within the undercut portion (10). The external diameter of the ring (2) is equal to that of the hole (8). Means (4,14,19) for temporarily immobilizing the segments of the ring are mounted upon the body. Means fixed upon the body may drive the ring (2) into the vicinity of the undercut portion of the hole and radially acting means (4) may cause the segments of the ring (2) to pivot into the undercut portion.

Abstract: A blind fastener is disclosed. The fastener comprises a tubular nut, a buckling sleeve and a mandrel. The buckling sleeve on one of its ends has a bearing face radially overhanging a facing restraint face of the tubular nut, and a tapered surface which deforms upon threaded drawing of the mandrel through the nut to approach the shape of a plane normal to the axis of the fastener.

Abstract: A dual expansion and non-expansion anchor comprising a pair of inner and outer expansion fasteners connected to each other by means of a screw-threaded connecting tie, said expansion fasteners being adjustable on the connecting tie to adjust to the spaced positions of an inner supporting structure and an outer supported wall. Insertion limiting means is provided to limit insertion of the inner fastener into the inner supporting structure in order to fix the position of said inner fastener in said supporting structure. Torque applying means applied to the connecting tie inserts and sets the inner fastener. Torque applying means applied to a nut on the connecting tie expands the outer expansion fastener.

Abstract: An improved expansion assembly for a mine roof bolt has a tapered plug, two expansion leaves that bear against the tapered plug, a bail that connects the expansion leaves and extends over the end of the mine roof bolt, and a breakable holding ring to keep the expansion assembly assembled until after it is placed into the bore hole. The tapered plug has a threaded bore therethrough for threading onto the mine roof bolt. The tapered plug also has tapered surfaces that have an angle of taper of 80.degree. to the axis of the mine roof bolt. The expansion leaves each have nine serrations formed on the surface such that the serrations are formed by the intersection of a planar surface perpendicular to the axis of the mine roof bolt and a frusto-conical surface. The frusto-conical surface is at an angle of 69.degree. to the planar surface. The serrations are equally spaced from each other and have a peak to peak distance of 0.25". The expansion leaves each have a maximum length of 3".

Abstract: An expansion anchor is used in a hole in a receiving material where the hole is undercut. The expansion anchor includes an axially elongated anchor sleeve containing slots extending in the axial direction. Expansion interlock members are radially displaceably mounted in the slots. A fastening bolt can be threaded into the sleeve so that it radially displaces and secures the interlock members in the undercut portion of the hole. Each interlock member has a shaped surface facing radially inwardly in the sleeve and the shaped surface is contacted by the fastening bolt as it is moved into the sleeve. The trailing end of the shaped surface is formed so that it is not contacted by the fastening bolt as the bolt is moved through the sleeve.

Abstract: An anchor bolt for clamping an object tightly against a receiving surface comprises a threaded elongated anchor rod having a head, an expansion body threadedly received on the rod in spaced relation to the head, and an expansion sleeve on the expansion body that is expanded as the rod is threaded into the expansion body. The anchor rod extends through an outer sleeve between an abutment on the head and an abutment on the expansion body, and spacers, such as a coiled spring or further sleeves, are provided between the anchor rod and the outer sleeve. The bolt provides improved shear resistance and anti-vibration efficiency.

Abstract: A high pressure pipe stopper includes an elongated stem having a threaded section and terminating at a first end in a conically shaped mandrel having an exterior surface sloped at an angle of about 5.degree.. The pipe stopper also includes a plurality of grip segments about the stem and a nut engaged with the threaded section to force the grip segments up along the mandrel. The pipe stopper may also include an extractor coupling connected between the nut and grip segments such that the grip segments are drawn down the mandrel when the nut is turned away from the mandrel.

Abstract: A leakage testing apparatus includes a pull bar surrounded by an array of arcuate segments having teeth that engage and deform the inner surface of a tube. When tension is applied to the pull bar, a cam forces the segments to move outwardly to contact the tube while maintaining a parallel relationship to said pull bar.

Abstract: An expansion dowel assembly includes an axially elongated sleeve having a leading end and a trailing end, an axially extending spreading member located within the sleeve adjacent its leading end, and a threaded bolt extending into the trailing end and toward the leading end of the sleeve. The threaded bolt is axially movable within the sleeve between a first position where the dowel assembly can be inserted into the borehole and a second position where the bolt is driven further into the sleeve into expanding contact with the spreading member for radially expanding the spreading member and the sleeve. An abutment is provided for the leading end of the dowel assembly to prevent displacement of the spreading member out of the sleeve when the bolt is driven from the first position toward the second position.

Abstract: An expansion anchor (3) is provided for retention in an approximately cylindrical well hole (7) having a conical enlargement (9) at a distance from the well opening and widening toward the well hole floor. The expansion anchor (3) is provided on its sleeve or ring-shaped latch supporting member (21) with at least two latches (31) flaring downhole and adapted to be deflected into the enlargement (9). Screwed onto a threaded spindle (11) extending through the latch supporting member (21) is an expansion cone (23) tapering up to the well opening, by means of which the latches (31) are urged into surface engagement with the conical enlargement (9) in the wall of the well hole. The expansion cone (23) is provided with an abutment (33) facing uphole, and the latch supporting member or the latches are provided with an oppositely facing abutment (32) extending into the withdrawal path of the expansion cone (23).

Abstract: Toggle bolt (10) which can be set interlockingly in an undercut bore (12) and having locking elements disposed for pivoting on the toggle bolt front end and biased by a spring (32) for an excursion into the position of engagement with the undercut (16).The locking elements (22) are secured against excursion by a clasping element (46) embracing them, which has the form of a plastic sleeve (48) from whose rearward end a circumferential annular flange projects radially whose outside diameter is greater than the diameter of the corresponding mounting bore (12). Upon the introduction of the toggle bolt (10) into the mounting bore (12), the annular flange (50) holds the clasping element (46) back at the outer end of the mounting bore, the locking elements (22) being pushed out of the sleeve (48) and being then able to swing out freely.Thin tabs (42) pointing radially inward on the sleeve (48) prevent a premature pushing of the clasping element (46) away from the locking elements (22) prior to the setting process.

Abstract: An anchor bolt is arranged to be secured in a relatively deeply drilled hole having a conical enlargement adjacent the base or inner end of the hole. The anchor bolt is formed of an axially elongated tie rod and an anchor located on the end of the tie rod which is inserted into the base of the drilled hole. The anchor is made up of a number of radially expandable sleeve segments. The anchor also includes a cone element for expanding the sleeve segments radially outwardly into the conical enlargement in the hole. The sleeve segments have an outside radius variable in the axial direction of the segments. The radially outer surface of the segments is substantially smooth for their axial length. At the smaller diameter end of the sleeve, the segments are held together by an annular elastic disc.

Abstract: Toggle (10) which can be set form-fittingly on the undercut surface of a bore, having an elongated fastening bolt (18) on whose bore-internal end locking elements (22) are mounted, which can be rocked outwardly by a conical component (28) disposed axially displaceably on the fastening bolt (18) from a position lying within the diameter of the bore (12) to a position engaging the undercut surface (17). The locking elements (22) are supported on a bottom piece (20) on the bore-internal end of the fastening bolt (18) and have the form of sleeve segments integrating, in the non-outspread position, a thick-walled sleeve. Between the axially displaceably disposed conical component (28) and a bolt head, or a nut (38), there is disposed a coil spring (32) which can be placed under bias by axial compression.

Abstract: Toggle which can be set against the face of an undercut provided within a bore, and having an elongated bolt, on whose bore-internal end locking elements are mounted, which, by means of a conical component disposed for axial displacement on the bolt, can be expanded outwardly from a position in which they are within the diameter of the bore to a position in which they engage the face of the undercut. The locking elements are supported on a bottom piece on the end of the bolt within the bore, and are in the form of segments of a thick-walled cylinder when in the retracted position. A variety of anti-rotational means are provided to prevent the toggle from turning during the setting operations.

Abstract: The subject invention relates to a straddle cartridge for a straddle cartridge anchor having a central bore which is adjusted to the conicity of the anchor head and wherein the cartridge parts are held together by means of straddle members arranged in succession parallel with respect to the cartridge axis and in direction of the thick ends of the cartridge parts extending outwardly from the outer walls of the cartridge parts.