Abstract:
A clevis hanger for supporting conduit comprising a lower U-shaped member having a pair of generally parallel arms, each arm having an upper end, and an upper hanger member having a pair of spaced-apart arms depending generally downward therefrom. Each arm of the upper hanger member has an upper portion and a lower portion. The lower portions of are horizontally spaced apart such that the lower portions are located adjacent the arms of the lower hanger member. Each of the arms of the lower hanger member and each of the lower portions of the arms of the upper hanger member has an opening therein. The openings are in generally horizontal alignment with one another when the upper and lower hanger members are connected. An elongate fastener is adapted to be inserted through the aligned openings to connect the upper and lower hanger members. The clevis hanger further includes an alignment member for limiting the upward movement of the lower hanger member relative to the upper hanger member to align the openings in the arms of the upper and lower hanger members to facilitate insertion of the fastener through the openings.
Abstract:
A hold-down device for holding a cable tray on a support includes a rigid member having opposite side edges, opposite side margins adjacent respective side edges, and opposite end portions. The member may be placed on the support in a position in which the opposite side margins of the member bear on edges of the support with the member overlying the slot adjacent a flange of the cable tray. The member is constructed and arranged such that it is selectively securable to the support by a threaded fastener either in a clamping position in which one end portion of the member overlies the flange of the cable tray and may clamp the flange of the cable tray thereby to hold the rail in fixed position with respect to the support, or in a non-clamping position in which the opposite end portion of the member overlies the flange of the cable tray but cannot clamp the flange thereby to permit lengthwise thermal expansion and contraction of the rail while still holding the rail on the support. First and second anti-spin structures are provided at respective end portions of the member engageable with the support to prevent rotation of the member relative to the support as the threaded fastener is rotated to secure the member in its clamping or non-clamping position.
Abstract:
A support for an electrical box, comprising a bar to be mounted between two spaced-apart wall studs or the like. The bar comprises an elongate web of sheet metal forming a front face of the bar and having side edges extending lengthwise of the bar, a pair of flanges extending rearwardly from the side edges of the web, and a forwardly-opening channel formed in the web running substantially the full length of the web between the side edges of the web. The channel has spaced apart side walls extending rearwardly from the front face of the web, a bottom wall connecting the side walls and forming the bottom of the channel, and pilot holes spaced along the bottom wall of the channel at relatively closely spaced and regular intervals whereby an electrical box may be attached to the bar in a selected position lengthwise of the bar by placing the back wall of the box flush against the front face of the web over the channel and then fastening the box to the bar by using fasteners threaded through selected pilot holes in the bottom wall of the channel.
Abstract:
A bracket for mounting an electrical switchbox or the like on a metal stud of generally channel shape having a web at one side constituting a closed side. The stud has a front and rear flange which define an open side of the stud between them. The bracket includes a bracket plate having a front end and a rear end and a flap generally adjacent the front edge of the bracket plate for attaching the bracket to the front flange of the wall stud in a position in which the bracket plate extends rearwardly adjacent one side of the wall stud. Track members generally adjacent the front end of the bracket plate hold an electrical switchbox or the like in fixed position relative to the bracket plate with one side of the box generally adjacent the bracket plate and with an open front of the switchbox facing forwardly. An arm on the bracket plate may be moved from a first position in which the arm extends in front-to-rear direction with respect to the bracket plate to a second position in which the arm extends laterally inwardly from the bracket plate. When the bracket is to be used at the open side of a wall stud, the arm is moved to the second position and engages the web of the wall stud to support the bracket against lateral movement.
Abstract:
A system for positioning and supporting a pipe or conduit in fixed position relative to a structural element, comprising a support bar to be secured to the structural element having openings therein spaced at regular intervals lengthwise of the bar, and a thin flat bracket member to be affixed to the support bar in a selected position lengthwise of the bar. The bracket member is formed with at least one L-shaped lug and is adapted to be inserted through a selected opening of the support bar and moved relative to the bar from a preliminary position to a final position wherein the lug extends beyond the opening and overlaps the bar with a marginal edge portion of the opening received in the space between the lug and the bracket member. A locking member integral with the bracket member is adapted for movement through another opening of the support bar when the bracket member is in its final position thereby to affix the bracket to the support bar in a selected longitudinal position with respect to the bar without the use of separate fasteners.
Abstract:
A cable management system for routing cable with respect to electronic equipment. This system has a variety of improvements providing greater flexibility in routing cable to and from the equipment.
Abstract:
A cable management system for routing cable with respect to electronic equipment. This system has a variety of improvements providing greater flexibility in routing cable to and from the equipment.
Abstract:
A rack, especially for holding units of electrical equipment one above another, comprising an open rectangular frame having opposite faces. The frame comprises a base, sides constituted by channels, a head and feet on the base for standing it upright, components being configured to be self-squaring for facilitating assembly.
Abstract:
A connector for connecting a seismic brace to a support rod, such as for a cable tray, to inhibit movement of the rod during seismic activity. The connector comprises a metal connecting member having an upper portion and a lower portion joined at a juncture. Openings in the juncture, upper portion and lower portion define a slot for entry of the support rod into the slot. The connector further comprises a retainer inserted in a gap between the upper and lower portions. The retainer bridges the slot to retain the support rod in the slot. The connector permits bracing to be added without removal of the support rod from the tray and ensures that the brace remains attached during seismic activity, even where a retaining nut holding the connector to the support has become loosened.
Abstract:
A cable support system comprising a series of elongate racks connected together end-to-end, each rack having upper and lower metal tubes of circular cross-section extending longitudinally at the sides thereof, stamped sheet metal cross-members extending between the lower tubes, and stamped sheet metal side members extending between the upper and lower tubes at each side of the rack, a method of constructing the support with a change in direction, and a method of supporting cable with the cable enclosed in components of the racks.