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Splice for Marker Rope Disclosure Number: IPCOM000247921D
Publication Date: 2016-Oct-11
Document File: 3 page(s) / 200K

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The Prior Art Database


A cylindrical splice connects two braided ropes with an embedded electronic marker device. The size and shape (i.e. outer diameter) of the splice match the dimensions of this marker device. The splice system significantly reduces the shape diameter compared to fastening the rope ends by knots. Therefore, the connected ropes can easily be pulled through existing cable ducts. Alternatively, a cylindrical core with tapered ends and an outer diameter matched to the inner diameter of the hollow braid / weave of the marker rope feature a mechanical structure such as a number of spikes, collars, hooks, teeth or similar design on the outside that interlock with the inner side of the hollow braid / weave and take the load / provide a certain tensile strength of the splice. Alternatively, an external sleeve with pointy spikes /teeth on the inside can be wrapped around the splice and crimped.

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Splice for Marker Rope 


A cylindrical splice connects two braided ropes with an embedded electronic marker device. The size  and shape (i.e. outer diameter) of the splice match the dimensions of this marker device. The splice  system significantly reduces the shape diameter compared to fastening the rope ends by knots.  Therefore, the connected ropes can easily be pulled through existing cable ducts. Alternatively, a  cylindrical core with tapered ends and an outer diameter matched to the inner diameter of the hollow  braid / weave of the marker rope feature a mechanical structure such as a number of spikes, collars,  hooks, teeth or similar design on the outside that interlock with the inner side of the hollow braid /  weave and take the load / provide a certain tensile strength of the splice. Alternatively, an external  sleeve with pointy spikes /teeth on the inside can be wrapped around the splice and crimped. 
To locate subsurface cable ducts, a special so called Marker Rope containing locator markers is drawn  into the ducts. The rope has a certain length and has to be tied to subsequent rope segment multiple  times. This is done currently by tying a knot. This method has some disadvantages: 

‐  A simple knot significantly increases the rope diameter causing problems in small ducts 

‐  Special knots with smaller diameter are difficult to build and may untie, if not done properly  
The solution described herein overcomes these issues and enables the installer to connect the rope  segments quickly and easily in a repeatable manner by use of part that interlock with the open ends of  each marker rope. 
The splice consists of two identical half shells (Figure 1), characterized by two inner pins with coned  ends. Each end of the braided ropes gets pushed onto the pins of one half shell as shown in Fig...