IPC 2013 : D07B 3/12 : operating with rotating loops of filaments.

IPC2013 > D > D07 > D07B > D07B 3/00 > D07B 3/12[1] > operating with rotating loops of filaments.
Notes[g] D07B 3/00 - D07B 9/00: Manufacture of ropes or cables
D SECTION D — TEXTILES; PAPER.
D07 ROPES; CABLES OTHER THAN ELECTRIC.
D07B ROPES OR CABLES IN GENERAL (joining ropes or cables to one another or to other objects B65H 69/00, F16G 11/00; mechanical finishing or dressing of ropes D02J; decorative ropes or cords D04D; suspension cables for bridges E01D 19/16; specially adapted for driving, or for being driven by, pulleys or other gearing elements F16G 9/00; electric cables or joints insofar as electrical aspects are essential H01B, H01R).
D07B 3/00 General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material.
D07B 3/12 · operating with rotating loops of filaments.