[Object] A hollow stranded wire line, for manipulation, having an excellent torque transmittability is provided.

[Solution] A hollow stranded wire line 2 for manipulation is a hollow stranded wire line 2 that is advantageously used as a stranded wire line for manipulation in a medical instrument, and a side wire 4 or a side strand which is an outermost layer has a forming rate that is greater than 100% and not greater than 110%. The side wire 4 or the side strand having been formed has a spiral shape in which a flatness that is an aspect ratio obtained by a major axis being divided by a minor axis is preferably not less than 1.01 and preferably not greater than 1.10.

Methods and systems for ropes used to catch livestock such as a cattle roping lariat. In one embodiment, the lariat includes a set of strands, each strand including a set of yarns surrounding a central core. The set of strands are twisted to form a twisted rope. The lariat is manufactured using a set of components including a head box, a tree-cross box with a branched strand tree device and a cross device, and a tail box.

Various embodiments of the present disclosure provide a hollow-braided rope having a new and improved rope termination formed therein and a new and improved rope termination system for forming the rope termination. Generally, the rope termination of the present disclosure is formed using a double-braided portion of hollow-braided rope in conjunction with a set of mechanical components of the rope termination forming system. The use of both the double-braided portion of the hollow-braided rope and the set of mechanical components causes any applied tensile forces to be distributed between the double-braided portion and the mechanical components. The distribution of part of any applied tensile forces away from the mechanical components and to the double-braided portion of the hollow-braided rope itself enables the mechanical components to be relatively small and lightweight and reduces the size and weight of the rope termination without compromising strength.

Various embodiments of the present disclosure provide a hollow-braided rope having a new and improved rope termination formed therein and a new and improved rope termination system for forming the rope termination. Generally, the rope termination of the present disclosure is formed using a double-braided portion of hollow-braided rope in conjunction with a set of mechanical components of the rope termination forming system. The use of both the double-braided portion of the hollow-braided rope and the set of mechanical components causes any applied tensile forces to be distributed between the double-braided portion and the mechanical components. The distribution of part of any applied tensile forces away from the mechanical components and to the double-braided portion of the hollow-braided rope itself enables the mechanical components to be relatively small and lightweight and reduces the size and weight of the rope termination without compromising strength.

Apparatus and method for a continuous replenishing of the lift gas and maintaining the proper pressure and lift of a tethered medium altitude aerostat utilizing a novel feed tube running the entire length of the tether. A first end of the feed tube is connected to the aerostat while a second end is connected through a novel slip ring means to a pressure controlled helium ballast chamber and scrubber on the ground to maintain pressure and lift by a reversible compressing pump. A plurality of pressure and temperature sensors and tension gauges strategically placed inside and around the airship continuously monitor the temperature and pressure changes in the aerostat. A data retrieval and communication unit mounted on the aerostat collects measurement data from the pressure, temperature and tension sensors which is relayed to the ground station and the data is used to regulate lifting gas pressure inside the aerostat.

Apparatus and method for a continuous replenishing of the lift gas and maintaining the proper pressure and lift of a tethered medium altitude aerostat utilizing a novel feed tube running the entire length of the tether. A first end of the feed tube is connected to the aerostat while a second end is connected through a novel slip ring means to a pressure controlled helium ballast chamber and scrubber on the ground to maintain pressure and lift by a reversible compressing pump. A plurality of pressure and temperature sensors and tension gauges strategically placed inside and around the airship continuously monitor the temperature and pressure changes in the aerostat. A data retrieval and communication unit mounted on the aerostat collects measurement data from the pressure, temperature and tension sensors which is relayed to the ground station and the data is used to regulate lifting gas pressure inside the aerostat.