A tensile-force buffering apparatus interposes a physical structure and a drop clamp having a messenger of an input drop cable secured thereto. The tensile-force buffering apparatus includes an outer housing defining an elongate inner cavity and a retainer, and a spring-strut assembly. The spring-strut assembly includes a central shaft, a retention member at a first end of the central shaft, and a coil spring disposed about the central shaft. The spring-strut assembly is received in the cavity of the outer housing, and the retention member is held by the retainer while a load compressing the coil spring is less than a predetermined threshold load. The retention member is released from the outer housing when the load compressing the coil spring reaches the predetermined threshold load, thereby effecting separation of the spring-strut assembly from the outer housing.

An apparatus for retaining a wire safely above ground in an overhead power distribution system that also prevents damage to a support structure caused by an object falling on the wire is disclosed herein. The apparatus may comprise a mounting base configured to be affixed to a support structure and a bracket arm configured to support a wire and rotatably engage the mounting base. The mounting base and the bracket arm may each include a set of apertures configured to receive a pivoting pin and a set of apertures configured to receive a shear pin. The bracket arm may be affixed to the mounting base in a horizontal position relative to the mounting base when the pivoting pin and shear pin are inserted into their corresponding apertures. The bracket arm rotates downward, pivoting around the pivoting pin, when the shear pin breaks due to impact on the wire.

This invention relates to an apparatus (1) for attaching restraining means (10, 11) to a line (3) and more specifically, but not exclusively, to an apparatus (1) for attaching a safety net to a powerline. Replacement of transmission lines (3) is a laborious process and can be very dangerous, especially when overhead lines (3), or earth wires located above live lines (3), must be replaced. There is a real risk that if the overhead line (3) fails it may fall onto the live lines (3) below and cause damage to expensive infrastructure and injury or death. The invention provides an apparatus (1) for attaching restraining means (10, 11) to a line (3) comprising two or more members movable relative to each other between an open position wherein a line (3) is engageable by the apparatus (1) and a closed position wherein a line (3) is engaged by the members. At least one of the members including restraint attachment means for attaching a restraint (10, 11) to the apparatus (1).

This invention relates to an apparatus (1) for attaching restraining means (10, 11) to a line (3) and more specifically, but not exclusively, to an apparatus (1) for attaching a safety net to a powerline. Replacement of transmission lines (3) is a laborious process and can be very dangerous, especially when overhead lines (3), or earth wires located above live lines (3), must be replaced. There is a real risk that if the overhead line (3) fails it may fall onto the live lines (3) below and cause damage to expensive infrastructure and injury or death. The invention provides an apparatus (1) for attaching restraining means (10, 11) to a line (3) comprising two or more members movable relative to each other between an open position wherein a line (3) is engageable by the apparatus (1) and a closed position wherein a line (3) is engaged by the members. At least one of the members including restraint attachment means for attaching a restraint (10, 11) to the apparatus (1).

A temporary insulated conductor guard structure is mountable on an electrical insulator. The electrical insulator is mounted on the distal end of a crane or truck boom. The conductor guard structure includes a U-shaped frame having a horizontal elongate beam and a pair of stub arms upwardly extending from opposite ends of the beam. Elongate rigid, electrically conductive rollers are rotatably mounted to each of the stub arms and the beam so as to form an electrically conductive rolling surface extending around the interior of the U-shaped frame for rotationally supporting sagging electrical conductors thereon.

A temporary insulated conductor guard structure is mountable on an electrical insulator. The electrical insulator is mounted on the distal end of a crane or truck boom. The conductor guard structure includes a U-shaped frame having a horizontal elongate beam and a pair of stub arms upwardly extending from opposite ends of the beam. Elongate rigid, electrically conductive rollers are rotatably mounted to each of the stub arms and the beam so as to form an electrically conductive rolling surface extending around the interior of the U-shaped frame for rotationally supporting sagging electrical conductors thereon.

A temporary insulated conductor guard structure is mountable on an electrical insulator. The electrical insulator is mounted on the distal end of a crane or truck boom. The conductor guard structure includes a U-shaped frame having a horizontal elongate beam and a pair of stub arms upwardly extending from opposite ends of the beam. Elongate rigid, electrically conductive rollers are rotatably mounted to each of the stub arms and the beam so as to form an electrically conductive rolling surface extending around the interior of the U-shaped frame for rotationally supporting sagging electrical conductors thereon.

A temporary insulated conductor guard structure is mountable on an electrical insulator. The electrical insulator is mounted on the distal end of a crane or truck boom. The conductor guard structure includes a U-shaped frame having a horizontal elongate beam and a pair of stub arms upwardly extending from opposite ends of the beam. Elongate rigid, electrically conductive rollers are rotatably mounted to each of the stub arms and the beam so as to form an electrically conductive rolling surface extending around the interior of the U-shaped frame for rotationally supporting sagging electrical conductors thereon.

An anti-rotation device is provided for stringing a cable or wire while reducing a twisting moment of the cable or wire as it is strung. The device includes a tow component, having multiple tow sections pivotally connectable end-to-end. A plurality of electrically insulated weighted tails are suspended so as to hang from the tow component. Each of the tails includes weighted tail sections releasably connectable end-to-end to one another. At least one electrically insulated tail section is provided in each tail between the tow component and at least some of the weighted tail sections. The tails are constrained to only articulate relative to the tow component in the single plane of bending of the tow component.

An anti-rotation device is provided for stringing a cable or wire while reducing a twisting moment of the cable or wire as it is strung. The device includes a tow component, having multiple tow sections pivotally connectable end-to-end. A plurality of electrically insulated weighted tails are suspended so as to hang from the tow component. Each of the tails includes weighted tail sections releasably connectable end-to-end to one another. At least one electrically insulated tail section is provided in each tail between the tow component and at least some of the weighted tail sections. The tails are constrained to only articulate relative to the tow component in the single plane of bending of the tow component.