FLEXIBLE TUBULAR BRAID FOR PARACHUTE STROPS Russian patent published in 2018 - IPC D04C1/12 D07B1/00 

FIELD: natural and chemical threads and fibers.

SUBSTANCE: tubular braid for parachute strops is proposed, made in the form of a threadlike body of a tubular shape formed by a mutual intertwining at an angle of crossing from 80° up to 100° an even number of braid threads, multiple of 8, divided into two parts, in each one the braid threads are arranged along spirals of the right and left directions with a helix angle from 35° up to 55°. Braid threads are divided into two unequal parts in a 3:1 ratio. Cord is made of a single intertwining with the formation of convex cells on its surface, each one in an alternating order contains portions of three single threads of the braid of one of the directions, bounded by braid threads of the opposite direction, forming on the surface of the cord the elements of the pattern of the plain weave of three folded bundles of single threads turned with respect to the longitudinal axis of the cord by an angle equal to half the angle of crossing. Degree of tightness of the cord is in the range (58±3) %.

EFFECT: proposed tubular braid can be used in various branches of technology, mainly as parachute strops; in addition, it can be used as a tow rope to move vehicles and trailers, and also as a carrying cord for winches, antenna stretches, yachting ropes and traction-drive elements of manual block and tackle units.

1 cl, 2 dwg, 2 tbl