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US 10,801,160 B2Granted
Draw tape for cables or similar flexible elements
OwnerMarcella Gaiinventor
Life of this patent
Estimating the term…
Abstract
Draw tape for cables including an elongated flexible element made of a helical multifilament rope composed of three filaments or strands helically wound about a common longitudinal axis. According to an additional feature, the rope is hammered. Still according to an improvement, the rope is externally covered by a jacket.
Claims19
A draw tape for cables or for elongated flexible elements, comprising:
- an elongated flexible element portion made of a helical multifilament rope composed of at least three filaments or strands helically wound about a common longitudinal axis;
- a jacket wrapping the helical multifilament rope;
- and
- an external covering layer made of a plastic material that is attached to an entirety of an outer surface of the jacket,
- wherein the external covering layer has one or more radial external webs or ribs arranged along a circumference of a section of said external covering layer and oriented parallel to a longitudinal axis of the draw tape or with a helical arrangement about the longitudinal axis of the draw tape.
2 more elements
A process of manufacturing a draw tape comprising:
- providing at least three strands;
- winding the at least three strands in a helical arrangement about a common longitudinal axis;
- hammering the three helically wound strands according to two or preferably more than two directions perpendicular to the common longitudinal axis;
- externally covering the rope with a jacket;
- attaching an external covering layer made of a plastic material to an entirety of an outer surface of the jacket, the external covering layer having one or more radial external webs or ribs arranged along a circumference of a section of said external covering layer and oriented parallel to a longitudinal axis of the draw tape or with a helical arrangement about the longitudinal axis of the draw tape.
2 more elements
A method of drawing a flexible longitudinal element along a tubular passage duct, comprising:
- providing a draw tape having,
- an elongated flexible element portion made of a helical multifilament rope composed of at least three filaments or strands helically wound about a common longitudinal axis,
- a jacket wrapping the helical multifilament rope, and
- an external covering layer made of a plastic material that entirely covers an outer surface of the jacket,
- wherein the external covering layer has one or more radial external webs or ribs arranged along a circumference of a section of said external covering layer and oriented parallel to a longitudinal axis of the draw tape or with a helical arrangement about the longitudinal axis of the draw tape;
- attaching the flexible longitudinal element to the draw tape;
- and
- drawing the draw tape with the flexible longitudinal element attached thereto along the tubular passage duct.
5 more elements
Dependencies are inferred from the claim text.