Devices, systems and methods to prevent damage to power and communication conductors located in cold occurring regions, with an elongated cylindrical tubular assembly of closed cell foam within a braided/woven layer that can be sealed to provide longitudinal strength and a snag resistant durable and flexible outer coating. The assembly along with communication and power lines is pulled through new power and communication ducts and conduits and in retrofitting existing power and communication ducts, so that the assembly reduces the volume spacing in the ducts/conduits that can be damaged by water intrusion which expands during freeze conditions.

A fabric wrapped cable is formed by positioning adhesive on opposed layers of fabric. A cable is positioned between those layers and the layers are attached by attaching the adhesive of one layer to the adhesive of the other layer. In forming the wrapped cable in such a manner, the cable is provided with at least one wing.

An apparatus for limiting event energy in an underground structure having free space includes: an inner layer configured to envelope and seal an interior volume; an outer layer configured to envelope the inner layer; and, wherein the interior volume includes a volume-occupying material, having a solid material, a semi-solid material, a gaseous material, or any combination of the solid, the semi-solid, and the gaseous material.

An apparatus for limiting event energy in an underground structure having free space includes: an inner layer configured to envelope and seal an interior volume; an outer layer configured to envelope the inner layer; and, wherein the interior volume includes a volume-occupying material, having a solid material, a semi-solid material, a gaseous material, or any combination of the solid, the semi-solid, and the gaseous material.

A communications cable (11) is provided with a pliant sleeve (12, 21, 31) to allow it to be more easily inserted into a conduit. One form of the sleeve (12) has hook (14) and loop (15) connected to each other so that the sleeve (12) can engage the cable (11). Another form of the sleeve (21) is spring-loaded to engage the cable (11). In a third form of the sleeve (31) has an adhesive (33) which attaches the sleeve (31) to the cable (11).

Disclosed is a threading device suitable for a building electrical pipeline. The threading device comprises a fan, a take-up and pay-off main machine and a connecting hose. A take-up state induction mechanism mainly composed of a bent pipe converging device, a first rotating shaft, a bent pipe converging device lifting spring and a first microswitch is creatively arranged in a ventilation bin. When a strong wire is tightened, the bent pipe converging device is easy to rotate along with tightening of the strong wire, and the strong wire makes contact with the first microswitch in time when being tightened. After the strong wire is loosened, the bent pipe converging device can automatically return under the action of the bent pipe converging device lifting spring, and the take-up state of a wire wheel is recovered.

Disclosed is a threading device suitable for a building electrical pipeline. The threading device comprises a fan, a take-up and pay-off main machine and a connecting hose. A take-up state induction mechanism mainly composed of a bent pipe converging device, a first rotating shaft, a bent pipe converging device lifting spring and a first microswitch is creatively arranged in a ventilation bin. When a strong wire is tightened, the bent pipe converging device is easy to rotate along with tightening of the strong wire, and the strong wire makes contact with the first microswitch in time when being tightened. After the strong wire is loosened, the bent pipe converging device can automatically return under the action of the bent pipe converging device lifting spring, and the take-up state of a wire wheel is recovered.

The invention relates to a modular and compact arrangement (200) of three phases (A, B, C) of a gas-insulated apparatus (100), that is suitable for placement inside a tunnel or a pipe (106) or another confined space. According to the invention, the three phases (A, B, C) are arranged in a triangle or side-by-side on a fixation part (103, 104) which includes a roller system (105; 105a, 105b, 105c, 105d). This allows the insertion of such a three-phase assembly (100) into confined spaces such as pipes or tunnels (106), without the need for access by workers or machinery. Furthermore, the present disclosure relates to a method for assembling and installing such a three-phase arrangement (100) into the confined space (106).

The invention relates to a modular and compact arrangement (200) of three phases (A, B, C) of a gas-insulated apparatus (100), that is suitable for placement inside a tunnel or a pipe (106) or another confined space. According to the invention, the three phases (A, B, C) are arranged in a triangle or side-by-side on a fixation part (103, 104) which includes a roller system (105; 105a, 105b, 105c, 105d). This allows the insertion of such a three-phase assembly (100) into confined spaces such as pipes or tunnels (106), without the need for access by workers or machinery. Furthermore, the present disclosure relates to a method for assembling and installing such a three-phase arrangement (100) into the confined space (106).

The present invention relates to a utility support framing system and method of use for structurally suspended concrete slabs of slab-on-voidform foundations. The inventive utility support framing system and method of use isolates utilities, hanger assemblies, and framing system components from soil so as to avoid problems created by volumetric soil changes which otherwise would damage utility lines under foundation systems. The inventive utility support framing system permits suspending utility pipes under a slab of a slab-on-voidform foundation while avoiding the problems of the prior art. The invention also relates to a novel mountable pipe clamp and method of use and a novel protective utility counterweight and method of use for transitioning a utility system from a suspended condition to a soil supported condition.