Abstract: The modular pin spotting system described herein allows a common welding source to be utilized with both hand held pinspotters and fixed pinspotters. This allows the operator to choose the mode of operation for the welding source based on operator needs. In some aspects, the pin spotting system includes a mobile welding source, a ground handpiece, a handheld pinspotter apparatus, and a fixed pinspotter apparatus. The welding source is removably attachable to either of the hand held pinspotter apparatus and fixed pinspotter apparatus and configured to supply welding energy to the attached pinspotter apparatus. Each of the hand held and fixed pinspotter apparatus are configured to energize the mobile welding source to supply welding energy to a weld pin positioned against a sheet metal surface to affix the weld pin to the sheet metal surface through welding.

Abstract: A hanger for suspending an air handler includes first and second elongate struts. The first strut defines a channel transversely therethrough configured for receipt of the second strut. A fastener assembly selectively fixes the second strut to the first strut.

Abstract: The disclosure concerns an eyelet assembly comprising a shank; and an eyelet portion connected to an end of the shank, the eyelet portion comprising a first prong and a second prong, the first prong being longer than the second prong, the first and second prongs being substantially arcuate and forming a substantially circular aperture, the first and second prongs at an axial angle relative to each other to form a slot. The assembly can be used to suspend or hang lighting fixtures such as LED flat panels at desired angles of display.

Abstract: A locking apparatus for securing a turning vane to a duct rail is disclosed. The locking apparatus includes an elongate body defining a longitudinal axis and a working end including a first end portion, a second end portion, and an arcuate portion extending between the first end portion and the second end portion. The first end portion, second end portion, and arcuate portion together define a concavity that is configured for the reception of a portion of the turning vane therein. The arcuate portion is configured for engagement against the portion of the turning vane to roll the portion of the turning vane over a portion of the duct rail. The rolling of the portion of the turning vane over the portion of the duct rail is configured to secure the turning vane to the duct rail.

Abstract: The modular pin spotting system described herein allows a common welding source to be utilized with both hand held pinspotters and fixed pinspotters. This allows the operator to choose the mode of operation for the welding source based on operator needs. In some aspects, the pin spotting system includes a mobile welding source, a ground handpiece, a handheld pinspotter apparatus, and a fixed pinspotter apparatus. The welding source is removably attachable to either of the hand held pinspotter apparatus and fixed pinspotter apparatus and configured to supply welding energy to the attached pinspotter apparatus. Each of the hand held and fixed pinspotter apparatus are configured to energize the mobile welding source to supply welding energy to a weld pin positioned against a sheet metal surface to affix the weld pin to the sheet metal surface through welding.

Abstract: The present disclosure relates to apparatus and methods for cutting a hollow turning vane to a desired length for use in a heating, ventilation, and air conditioning (HVAC) system. The vane cutting apparatus disclosed herein utilizes a pneumatically powered cutting mechanism that allows for a smaller apparatus footprint with no loss of cutting force and results in the single stepped blade rolling the inside edges of the hollow turning vane during cutting. The rolled inside edges provide a more secure and smoother fit when the hollow turning vane is fastened to the mating vane rail for use in an HVAC duct.

Abstract: The disclosure concerns an eyelet assembly comprising a shank; and an eyelet portion connected to an end of the shank, the eyelet portion comprising a first prong and a second prong, the first prong being longer than the second prong, the first and second prongs being substantially arcuate and forming a substantially circular aperture, the first and second prongs at an axial angle relative to each other to form a slot. The assembly can be used to suspend or hang lighting fixtures such as LED flat panels at desired angles of display.

Abstract: A foldable pin and base washer combination capable of being connected to a duct surface by welding or by an adhesive. In the unfolded position, the combination meets the preferred industry standard for securing a sheet or batte of insulation to a wall of an HVAC duct, and in the folded position the combination can be more efficiently and compactly packaged and shipped. The pin is preferably made from an electrically conductive material, preferably a metal, but the base washer can be formed of a metal or a rigid polymer material.

Abstract: There is provided a unitary, strike drop-in anchor where the individual parts are permanently held together to avoid misplacing any such individual part. The anchor comprises an anchor body with a central bore, the first end of the bore being threaded and having a constant internal cross-section for the length of the threaded portion. The exterior of the anchor body, and the central bore, having a decreasing bore towards the second end of the anchor body beyond the threaded portion, a threaded bolt with an internal central bore and a preferably polygonal drive head, and external threads extending from the drive head to the second end, has a strike tool extending through the central bore from the second end and extending beyond the drive head.

Abstract: A unitary damper shaft extender for HVAC air ducts, the extender comprising a unitary apparatus comprised of two interlocked, but relatively movable members. One of the members being capable of interlocking with a damper shaft, and the second member being slidably movable to cover, and thereby lock the first member to the damper shaft, so as to extend its length beyond the usual insulation used for air ducts.

Abstract: A cable clamp-bracket combination for rigidly connecting to an item to be suspended, especially a HVAC duct suspended from the ceiling of a structure. The combination utilizing, e.g., a commercially available cable clamp rigidly but removably connected to the clamp in a position where openings in the bracket surfaces mate with the cable channels through the clamp and a slot through the bracket mates with a clamp release projection on the clamp. The cable clamp includes a clamp clutch adjacent each cable channel for holding a support cable. The combination resulting in a rigid connection between the clamp and the item (e.g., duct) and a non-slip connection between the supporting cables and the item. The bracket can be formed from a flat plate having preformed openings and connecting elements by bending the plate into the desired form for holding the clamp and being securable to the, e.g., duct.

Abstract: A damper regulator device for adjusting the orientation of a damper blade in an air transfer system, such as a duct, is disclosed. The regulator is coupled to an end portion, of a damper shaft, pivoting of a handle component of the regulator functioning to turn the shaft and hence the blade. The device is adjustable to accommodate damper shafts of different configurations and sizes without disassembly of the device by shifting the handle between one or another of a pair of slots disposed at disparate distances from the shaft. The shifting of the shaft between slots in effected by a channel extending between the slots.

Abstract: A cable clamp of the spring biased wedge type incorporates a housing having an elongate slot formed therethrough, the slot being disposed in parallel relation to the direction of movement of the wedge in the housing. A retractor pin extends through the slot and is coupled to the wedge. The wedge may be shifted into cable releasing position by the application of compressive forces exerted between the portions of the pin projecting through the slot and an abutment portion or end of the housing. A simplified method of assembly includes interposing a spring between the wedge and the portion of the housing, shifting the wedge such that a blind bore in the wedge is aligned with the slot, and thereafter connecting a pin to the wedge as by press fitting, portions of the pin projecting outwardly through the slot to thereby capture the wedge and spring.

Abstract: A resistance weld pin for connecting batts of insulation to the interior of ducts is disclosed, the pin having superior aerodynamic properties which minimize turbulence in the duct flow stream and reduce the tendency of increments of the insulation surrounding the pin will become separated from the main body of the bott when introduced into the air stream. The pin assembly comprises a washer and a pin component projecting through the washer. The upper surface of the washer includes an annular depressed trough surrounding the head of the pin. Preferably the head is disposed within a central depression in the washer, the upper surface of the head forming a contact surface for the applying electrode and lying in a plane above an annular platform extending between the trough and the depression.

Abstract: A bow resistant connector for coupling frame components at right angles to each other includes a pair of legs extending from an apex, the legs being disposed at right angles to each other. The lateral side edges of the legs include fingers the outer surfaces of the fingers being formed with barbs for locking the leg to a respective frame member. The fingers are separated from the main body of the legs by slots. A boss is deflected from the body of the leg outwardly to provide a reinforcing rib, the boss being located between and in general alignment with the fingers. A secondary boss or rib member is formed adjacent the lead edge of the leg the secondary boss extending to the opposite side of the leg from the main rib or boss. The secondary boss engages a surface of the frame to provide additional stability to the connection between the connector leg and the frame component.

Abstract: The present invention is directed to a forming device adapted to impart a precise arcuate curvature to a sheet metal blank. The device includes a forming drum and a compression roller in proximate space relation to the surface of the drum. A characterizing feature of the device resides in a resilient deformable metal sheet having a lead surface fixed to the drum, the metal blank to be formed being captured between the drum surface and the flexible metallic sheet. Both the blank and the sheet are caused by the compression roller to conform to the curvature of the surface of the drum.

Abstract: An actuator assembly for a multi-blade damper includes a base plate having slots extending longitudinally thereof and slidably receiving drive portions of the louver shafts. A series of drive slots extending generally perpendicular to the clearance slots is formed at each side of the clearance slots. A series of link assemblies are keyed to the shafts, the link assemblies including actuator pins extending into selected ones of the drive slots. A clamp connection interposed between the link and drive portion of the louvers permits relative adjustment of the link relative to the louver. Movement of the base plate parallel to the plane defined by the axes of the louvers results in tilting of the louvers in a selected direction, dependent upon which of the series of drive slots is occupied by a pin of a respective link.

Abstract: A banding device is formed of two metallic components, namely, a clamp component and a strap component. The clamp and strap components are slidably assemblable into interlocked engagement. The strap includes regularly longitudinally spaced locking components, the locking components including teeth deflected from the plane of the strap and locking shoulders in the plane of the strap. The strap is applied by advancing the free end through a passage formed in the clamp, a pawl of the clamp being resiliently biased into the passage. The teeth and pawl co-act to permit movement of the strap through the clamp in a first direction, the pawl biasing the stop shoulders into the path of a barb extending into the passage to block reverse movement of the strap. The pawl is manually accessible, enabling the spacing between the pawl and barb to be increased to thereby release the strap permitting retraction of the strap from the clamp.