US 12,252,843 B2
Long lived synthetic rope for powered blocks
Hjortur Erlendsson, Kopavogur (IS)
Assigned to HAMPIDJAN HF, Reykjavik (IS)
Filed by HAMPIDJAN hf, Reykjavik (IS)
Filed on Jan. 6, 2022, as Appl. No. 17/569,506.
Application 17/569,506 is a continuation of application No. 16/302,672, abandoned, previously published as PCT/IS2017/050007, filed on May 17, 2017.
Claims priority of provisional application 62/337,820, filed on May 17, 2016.
Prior Publication US 2023/0332351 A1, Oct. 19, 2023
Int. Cl. D07B 1/04 (2006.01); D07B 1/02 (2006.01); D07B 1/16 (2006.01); D07B 5/00 (2006.01); D07B 5/12 (2006.01)
CPC D07B 1/04 (2013.01) [D07B 1/025 (2013.01); D07B 1/16 (2013.01); D07B 1/162 (2013.01); D07B 1/165 (2013.01); D07B 5/00 (2013.01); D07B 5/12 (2013.01); D07B 2201/1096 (2013.01); D07B 2201/2049 (2013.01); D07B 2201/2055 (2013.01); D07B 2201/2066 (2013.01); D07B 2201/2068 (2013.01); D07B 2201/2089 (2013.01); D07B 2201/209 (2013.01); D07B 2205/2003 (2013.01); D07B 2205/2014 (2013.01); D07B 2205/205 (2013.01); D07B 2205/2071 (2013.01); D07B 2207/4054 (2013.01); D07B 2401/205 (2013.01); D07B 2501/2015 (2013.01); D07B 2501/2038 (2013.01); D07B 2501/2061 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for forming a synthetic rope (1), the method comprising steps of:
a) providing a core (3) formed of at least a first synthetic substance, wherein the first synthetic substance is a thermoplastic substance;
b) enclosing the core within at least a flow shield capable of retaining within the flow shield at least most of the first synthetic substance when the first synthetic substance is in a semi-liquid phase;
c) providing a plurality of individual primary strands (19) formed of fibers formed of at least a second synthetic substance, wherein the second synthetic substance is an Aramid;
d) forming from a third synthetic substance a plurality of inner individual sheaths (21), wherein each inner individual sheath (21) is formed as an individual braided sheath, wherein at least one inner individual sheath (21) formed as an individual braided sheath is formed about and encloses one of the individual primary stands (19) formed of the second synthetic substance, so that at least some of the individual primary strands (19) formed of the second synthetic substance are each enclosed by a respective one of the inner individual sheaths (21) formed of the third synthetic substance, wherein the third synthetic substance has a decomposition temperature that is lower than a decomposition temperature of the second synthetic substance;
e) next, forming a hollow braided strength member (7) around the core (3) from a plurality of the individual primary strands (19), wherein at least some of the individual primary strands (19) used in forming the hollow braided strength member (7) have at least one inner individual sheath (21);
f) subjecting the strength member to tension and heat so as to cause the core to experience a non-solid phase and so as to cause the strength member and the core to become compacted and elongated; followed by cooling both at least the strength member and the core under tension so as to cause the strength member and the core to become permanently compacted and permanently elongated; and
g) enclosing the strength member within an outer sheath (8),
wherein the synthetic rope is permanently compacted and permanently elongated.