Abstract: A stake pocket anchor attaches an accessory to a vehicle stake pocket. The stake pocket anchor includes an anchor assembly hung from a tensioning member. The anchor assembly includes two channel members slidably attached to sandwich a center block, with an angled slide direction that enables sliding either upwardly and inwardly to a minimum anchor assembly width or downwardly and outwardly to a maximum anchor assembly width. During use, the anchor assembly gravitationally releases to its maximum anchor assembly width after being inserted through the stake pocket opening. The tensioning member is then used to vertically raise the anchor assembly within the stake pocket until a top of the anchor assembly contacts a bottom surface of the lip and thereafter allows further tightening of the anchor assembly against the bottom surface of the lip.

Abstract: The present invention relates to a rock bolt comprising first and second ends, a shaft extending between the ends, and an anchoring device extending along a first part of the shaft adjacent the first end. The anchoring device comprises a mandrel, and at least one expansion element overlaying the mandrel. The expansion element is displaced radially outwardly on a predetermined relative movement between the mandrel and the expansion element. The expansion element is joined to a connector to form an anchor assembly. The anchor assembly is keyed to the mandrel. The anchor assembly comprises relative rotation actuator means active during rotation of the anchoring device. The invention further relates to an anchoring device per se.

Abstract: An expansion wedge anchor (80) for insertion in a hole (H) delimited by a wall comprises an expander member (32) and an expansion number (34), the expander member being provided at a leading end of the expander member, the expander member comprising a flaring end (40), the expansion member being expandable at a trailing end (48) thereof and being adapted to engage the wall of the hole when the expander member is positioned in the hole, wherein upon longitudinal withdrawal of the expander member from the hole, the expander member displaces longitudinally relative to the expansion member with the flaring end thereof gradually causing the trailing end of the expansion member to expand, whereby a trailing edge of the expansion member engages the wall of the hole. The trailing end is adapted, when expanded by the flaring member, to extend at an angle with respect to a longitudinal axis of said expander member.

Abstract: An expandable bolt device secures a fragile part, like a quartz part, onto a second part. The expandable bolt device comprises a bolt and a locking device near a distal end of the bolt, the locking device being movable radially between an outward locked position and an inward unlocked position by moving the bolt axially with respect to the locking element. The distal end of the bolt is accommodated within a hole in a surface of the fragile part, which hole includes a first cylindrical section adjacent the surface and a wider second cylindrical section that is further away from the surface. In the unlocked position, the diameter of the expandable bolt device is smaller than the first diameter. After insertion of the expandable bolt device into the hole, the locking element is located in the second section of the hole. In the locked position, the locking element expands to a diameter wider than the first hole section and narrower than the second hole section.

Abstract: This invention relates to sheet metal reversed L-shaped segments, two of which may be assembled to form a T-shaped structure or fastener having a single layered head. The single-layered head has a hole engageable to an expanding member, such as a screw for example. The engageable hole is formed by two half holes, each half hole belonging to each L-shaped segment. Further, the fastener has legs, which expand upon insertion of the screw into the engageable hole. The T-shaped structure is adaptable to be securely locked in a slot of a metal sheet. This strong locking is realized by two sets of levers acting in opposite directions, and having as common fulcrum the region at the edges of the slot. One set of levers is formed by the action of the screw on the two half holes which form the engageable hole, while the other set of levers is formed by the action of the screw on the legs of the two L-shaped segments.

Abstract: The wedgelock of the present invention prevents the separation of structural members during drilling or other fabrication operations on structural assemblies with curved surfaces or thickness variations and precludes the formation of burrs and delaminations which might result from such separation. The wedgelock also permits more precise and repeatable hole and other feature fabrication by more precisely locating an alignment fixture, such as a drill plate, relative to a structural assembly upon which fabrication operations are to be performed. The bushed spring loaded wedgelock comprises a standard, commercially-available wedgelock modified by attaching a bushing within which a spring loaded spacer is telescopically mounted. Like a standard wedgelock, the bushed spring loaded wedgelock is inserted through collinear holes in a drill plate or other alignment fixture and a structural assembly to clamp the assembly to the fixture.

Abstract: A mine roof bolt expansion anchor is formed from a plurality of identical shell segments. Each shell segment has a first end, a second end, and an end section at the first end. A first finger extends from the end section to the second end of the shell segment. A second finger extends from the end section toward the second end of the shell segment and terminates at a distal edge spaced from the second end of the shell segment. The end section, the first finger and the second finger each include an inner surface and an outer surface. A deformable coupling couples a plurality of shell segments together to form a multi-piece shell. The inside surfaces of the end sections, the first fingers and the second fingers of the multi-piece shell define a central aperture in which a wedge, adapted to coact with the plurality of shell segments, is received in the central aperture. Movement of the wedge from the second end to the first end of the shell segments forces the fingers to move in an outwardly direction.

Abstract: A tie down fitting adapted to fit within a stake hole in a side wall section of a pickup truck or other structure. The fitting includes a double wedge and heads dimensioned for insertion through the stake hole for engagement within the stake hole sides. A special threaded fastener lifts the double wedge separating the heads and forcing them against the stake hole sides. The fastener is designed to receive several threaded devices or various quick release pins for engagement by a cargo securing line or the like. A number of such fittings enable securement of cargo on the truck bed. When the threaded device or quick release pin is removed the fitting is recessed or hidden from view and does not interfere with other activities of the truck.

Abstract: An expansion shell assembly of the type including a pair of unitary expansion shell elements, each having two leaf members joined adjacent their lower ends by bridge portions with a bail fixedly attached at terminal ends to outer surfaces of the bridge portions to maintain the expansion shell elements in assembled relation. The bridge portions include a recessed area extending continuously between its upper and lower edges. The recessed areas are divided into two portions, with the lower portions substantially narrower than the upper portions, wherein terminal ends of the bail are secured. Opposing edges of the shell elements are in spaced, substantially parallel relation with the space therebetween free of any structure extending into such space over the full axial length of the shell elements. Relieved areas extend into the inner surfaces of the bridge portions to provide a clearance for the lower end of a tapered camming plug which is moved between the shell elements to effect radial expansion thereof.

Abstract: An expansion anchor assembly comprising a shell having three elongated vertical leaves of generally transverse arcuate configuration arranged to form a 360.degree. surface, the exterior of each leaf being provided with a gripping surface, each leaf being attached at its top to a bail, the bail comprising a solid top portion having a frangible central dome through which a rock bolt can be forced, the interior diameter of the dome being adapted to receive the top end of the rock bolt, the top end of the rock bolt being chamfered to ensure that it remains secure within the central dome during installation and to prevent lateral movement of the rock bolt relative to the anchor shell, and a wedge-member being threadably engagable with the rock bolt and being adapted so that on longitudinal movement of the wedge-shaped member away from the ball, the leaves are wedged apart and relative rotation between the leaves and the wedge member is prevented.

Abstract: Anchor assembly for a mine roof bolt or the like in which the bail of an anchor shell having leaves for engaging the side wall of a bore hole has spring fingers for snagging the side wall of a bore hole to prevent downward movement to the anchor shell. The bail has a central opening for the roof bolt to pass through with the central opening having projections that extend inwardly of the opening to form an interference fit with the threads of the bolt as it is rotated through the opening. The leaves of the anchor shell which are clamped against the side wall have surfaces which diverge from tapered surfaces of the plug nut for expanding the anchor shell to prevent plowing between the plug nut and anchor leaves. The surfaces on the leaves extend downwardly from the top to about the bottom of the leaves.

Abstract: A one-piece molded plastic reusable internally threaded anchor nut removably insertable in a mounting hole in a workpiece and adapted to receive a screw comprises two sections which are joined together by an integrally formed web or hinge. When the sections are folded together, they define an internally threaded screw-receiving passage and an external releasable locking mechanism for securing the anchor nut in the mounting hole. In one embodiment the portions defining the screw-receiving passage are bifurcated and expand outwardly as the screw is inserted so as to cause the external locking mechanism (i.e., in the form of slots on the exterior of the bifurcations) to engage the edge of the mounting hole in which the nut was previously inserted. In other embodiments, the external locking mechanism (i.e.