Abstract: A spring nut for attaching a threaded object to a structure with reentrant lips. The spring nut can include a base, a first arm and a second arm extending from the base in a first direction, and legs extending laterally from the base. The arms can include a support portion, a structure-engagement portion, and a thread-engagement portion that can be configured to secure the threaded object against axial loading in a second direction opposite the first direction. Crumple zones in the support portions can deform upon loading of the threaded object in the second direction to cause the structure-engagement portion to be urged into the reentrant lips. Each of the legs can extend at a first angle from the base, toward the structure-engagement portions, to be disposed to contact an exterior surface of the reentrant lips of the structure when the first and second arms are received in the channel.

Abstract: A spring nut for attaching a threaded object to a structure with reentrant lips. The spring nut can include a base, a first arm and a second arm extending from the base in a first direction, and legs extending laterally from the base. The arms can include a support portion, a structure-engagement portion, and a thread-engagement portion that can be configured to secure the threaded object against axial loading in a second direction opposite the first direction. Crumple zones in the support portions can deform upon loading of the threaded object in the second direction to cause the structure-engagement portion to be urged into the reentrant lips. Each of the legs can extend at a first angle from the base, toward the structure-engagement portions, to be disposed to contact an exterior surface of the reentrant lips of the structure when the first and second arms are received in the channel.

Abstract: A hanger (200) is provided for supporting a load on a threaded object (10) with a longitudinal axis. The hanger (200) can include a hanger body (202), a hole (210) in the hanger body (202), and a partial thread portion (212). The hole (210) can be configured to receive the threaded object (10) therethrough. The partial thread portion (212) can be configured to engage with a thread of the threaded object (10) when the hanger (200) is in an engaged configuration. The hanger (200) can be configured to move from a non-engaged configuration to the engaged configuration without rotation of the hanger body (202) or the threaded object (10) about the longitudinal axis of the threaded object (10).

Abstract: A spring nut for attaching a threaded object to a structure with reentrant lips. The spring nut can include a base, a first arm and a second arm extending from the base in a first direction, and legs extending laterally from the base. The arms can include a support portion, a structure-engagement portion, and a thread-engagement portion that can be configured to secure the threaded object against axial loading in a second direction opposite the first direction. Crumple zones in the support portions can deform upon loading of the threaded object in the second direction to cause the structure-engagement portion to be urged into the reentrant lips. Each of the legs can extend at a first angle from the base, toward the structure-engagement portions, to be disposed to contact an exterior surface of the reentrant lips of the structure when the first and second arms are received in the channel.

Abstract: A clamp includes first and second parts, each of the parts having a circular central section and a pair of straight extensions extending away from the circular central section in opposite directions. In the first part the holes are closed holes, while in the second part the holes are open holes, connected by slots to an upper edge of the part. Bolts may be pre-located through the closed holes, with nuts threaded onto the bolts, but not tightened. The pre-placed bolts may be received through the slots and into the open holes of the second part. The nuts may then be tightened against the second part to clamp the circular central sections on opposite sides of a circular object, such as a vertical pipe run, between the parts. According to a variant, the bolts are permanently secured to the first part so as to prevent rotation of the bolts.

Abstract: A clamp for holding circular objects, such as pipes or conduits, includes a falcate rod portion that engages slots in a bar portion. The rod portion has a circular central section that is between a bent end and a threaded end for engaging respective of the slots. The circular section may have a cylindrical section inner surface, which may be textured, for engaging the circular object. The bar portion also has a circular central portion, for engaging the opposite side of the circular object. The clamp is installed on a circular object by placing the circular section of the bar portion against the circular object, hooking the bent end of the rod portion into one of the slots, inserting the threaded end of the rod portion through the other slot, and tightening a nut on the threaded end to secure the clamp to the circular object.

Abstract: A rooftop equipment support includes a polymer material block and a metal fastener support attached to an upper portion of the block. The fastener support has a fastener portion that is configured to receive one or more fasteners for securing piping or other equipment. According to one embodiment, folded-down lips of the metal fastener portion form a channel configured to accept one or more fasteners, such as pipe clamps. In another embodiment, the metal fastener portion is a plate having one or more threaded inserts. The threaded inserts may be located between a sheet metal part of the fastener portion and a top surface of the polymer material block. The polymer material block may be made of a polyurethane foam material. The metal fastener portion may cover at least part of the edges of a top surface of the polymer material block.

Abstract: A fabricated heavy duty structure clamp hanger uses a spacer block with a primary opening threaded hole accommodating a clamp screw. The block is secured between side plates each having a notch which extends beneath the hole so that a structure flange and the like may be inserted in the notch and clamped thereto by the screw. The clamp accommodates one or more threaded rods through other primary openings or holes, which may be in one or more spacer blocks. The blocks may be fabricated from laminations and the side plates may include at least two plates on each side. The structure is utilized with swaged or peened pins or projections extending through the side plates to provide a heavy duty hanger clamp having all of the advantages of castings but none of the problems and cost.

Abstract: A clevis hanger pipe support includes a bottom pipe-receiving portion and a top portion for coupling to structure such as a threaded rod. The portions are releasably held together by an unthreaded fastener, such as a retaining pin or a retaining bar. The top and bottom portions of the clevis hanger have respective apertures which, when aligned, allow the fastener to be inserted or removed, thereby mechanically coupling or de-coupling the top and bottom portions of the clevis hanger. When the apertures of the top and bottom portion are misaligned from one another, extraction of the fastener from the apertures is prevented. The apertures may be elongated slots. The fastener may be a suitably-shaped pin or bar.

Abstract: An electrical connector for transformer studs accommodates two different size transformer studs in the same slip-fit blind hole. The hole is provided with circumferential arc recesses which are sized and threaded to match the threads on the two different size studs. One or more jam screws force the stud into the respective recesses, and the matching threads provide a substantial contact area and an effective and efficient long lasting and sturdy electrical transformer connection.