Abstract: A marker used for alerting people and animals of a span of line between attachment points has two identical parts for ease of manufacture and of assembly. Either gripper teeth are integral with the parts or partitions are integral with the parts and cooperate to grip the line to be marked.

Abstract: A fixture for elevated utility lines, deployable from a hoverable vehicle having a load attachment point, each fixture having a body with a slot formed therein for receiving the line; a trap having one or a pair of movable arms for holding the line within the slot; a cocking mechanism for holding the trap in an open condition; and a trigger mechanism activated by contact with the line for releasing the cocking mechanism, and a trap releaser including a supportive hook receiver for releasing the trap during removal of the body from the line. A system for deploying fixtures also includes a base, an attachment for releasably suspending the base from the load attachment point and having a stabilizer bar supportively connected relative to the attachment point and resiliently oriented relative to the vehicle, a yoke releasably supported relative to the load attachment point, the base being suspended from the yoke.

Abstract: A beacon for power lines or similar cables, intended to scare birds and/or warn them of the existence of cables and having a central body attached to the line as a clamp, equipped with side fins, arranged vertically and with a color, layout and configuration consistent with the area's terrain and fauna. For installation, a car-shaped device, equipped with an electric motor and battery-operated, has been provided, which has a beacon charger and a device for setting down the same, which is moved through the line by remote control.

Abstract: A device for achieving visual marking of a line by a marking body is described. It relates especially to a substantially horizontal ground wire in a transfer system for high voltage electricity, at a relatively high altitude above the ground.The device comprises:a shell, especially in the form of a sphere, divided into two semispheres, carried bya fastening device, comprising clamping elements, provided to encompass the line in a first position, and to grasp the line fastening, in a second position, anda carrying device, in turn carried by a lifting device such as a helicopter or crane, which carrying means in said first position of the clamping elements carries the fastening device, and is arranged to be released, in said second position of the clamping elements, from the fastening device, so that said shell, in the form of a marking body, remains attached to said line, free from the carrying device.

Abstract: An overhead line marking device that is installable from one end thereof. The marker device is formed from two bodies and when installed includes two identical hinge/retaining assemblies at each end. Each hinge/retaining assembly includes a lower support plate, at least one U-shaped retaining leg member and an extension tongue as part of the upper body. Prior to installation, the far hinge/retaining assembly will be performed by attaching at least one U-shaped leg member onto the support. This forms a retaining groove that can receive and in which the tongue extension can rotate. During installation the tongue extension will be inserted into the far hinge/retaining assembly, after the lower body is secured to the overhead line, and the near hinge/retaining assembly is then completed forming an enclosed marker device about the overhead line.

Abstract: A marker for power lines includes a discharge lamp having one of its terminals connected by a cable and a metal jaw to an overhead ground wire. A second cable electrically connects the other terminal to a metallic energy captor which operates by induction in the electric field of the power lines. A sphere made of translucid material and secured to the lamp envelopes the lamp.

Abstract: A power-line marker comprising a pair of hemispheric shells with open ends facing each other collectively forming essentially a sphere. On the ground, the shells are joined together in a region located on one side only of a line-receiving channel defined between the shells. While in the air, the shells are partially separable from each other, in clam-shell fashion to enable a line to be advanced into the marker ultimately to lodge in the channel. Wire anchoring assemblies protrude from the exterior of the marker used in securing the marker to a line.

Abstract: An improved dynamic current interruption-type flashover indicator responsive to lightning strikes for releasing from the tip of arc horns located on power transmission towers and for interrupting the resulting dynamic current. The present invention utilizes a uniquely designed propellant having a formed center hole extending the longitudinal length of the propellant and containing therein a fuse wire extending from a separation plate at one end and engaging an inserted pin at the other end. When lightning strikes, the resulting arc is lead into and throughout the formed center hole by the fuse wire, the fuse wire melts and the temperature of the arc causes the propellant to vaporize uniformly into steam and the resulting gaseous force causes the indicator to become rocket-like and to suddenly leave the tip of the arc horn.

Abstract: An aircraft warning marker for use on a suspended high voltage wire is provided. The marker is composed of a substantially smooth, continuous electrically insulating body and a substantially electrically continuous electrically conducting layer disposed adjacent substantially the entire outer surface of the electrically insulating body. The insulating body and the conducting layer have a sufficiently low combined weight so that the marker is supportable on the wire. The electrically conducting layer of the marker is intended to be electrically connected to the wire.

Abstract: A fixture for elevated utility lines, deployable from a hoverable vehicle having a load attachment point, each fixture having a body with a slot formed therein for receiving the line; a trap having one or a pair of movable arms for holding the line within the slot; a cocking mechanism for holding the trap in an open condition; and a trigger mechanism activated by contact with the line for releasing the cocking mechanism, and a trap releaser including a supportive hook receiver for releasing the trap during removal of the body from the line. A system for deploying fixtures also includes a base, an attachment for releasably suspending the base from the load attachment point and having a stabilizer bar supportively connected relative to the attachment point and resiliently oriented relative to the vehicle, a yoke releasably supported relative to the load attachment point, the base being suspended from the yoke.