Global Patent Index - EP 1048763 A3

EP 1048763 A3 2000-12-27 - Hollow spindle, especially for manufacturing elastic wrap yarns

Title (en)

Hollow spindle, especially for manufacturing elastic wrap yarns

Title (de)

Hohlspindel, insbesondere zur Herstellung elastischer Umwindegarne

Title (fr)

Broche creuse, notamment pour fabriquer des fils enroulés élastiques

Publication

EP 1048763 A3 (DE)

Application

EP 99124592 A

Priority

DE 19919232 A

Abstract (en)

[origin: DE19919232C1] The hollow spindle, for cladding yarns, has inwards peripheral or spiral ribs (10a,10b) at the inner surface (8a) of the yarn channel (9), which is coaxial to the spindle axis. The yarn (6) moving through the yarn channel (9) is in contact with the projecting ribs only at their peaks, to be held at a gap from the inner surface (8a) of the channel (9). Preferred Features: The ribs (10a,10b) are at axial intervals of about 20 mm. The yarn channel (9) is formed by a tube (8) inserted through the central drilling (7) of the hollow spindle (1), with inner projecting ribs (10a,10b) at its inner surface (8a). The ribs (10a,10b) are formed by shaped distortion of the tube wall to give peripheral or spiral troughs (12a,12b) recessed at the outer surface of the tube (8). The tube (8) is of metal, with a matte inner surface or a fine orange peel surface structure. The inner ribs (10a,10b) project inwards by 0.5 mm from the inner tube surface (8a). The rib (10a,10b) surfaces are rounded in the direction (F) of yarn travel.

IPC 1-7 (main, further and additional classification)

D02G 3/32; D01H 13/04

IPC 8 full level (invention and additional information)

D01H 7/88 (2006.01); D01H 13/04 (2006.01); D02G 3/32 (2006.01)

CPC (invention and additional information)

D01H 7/88 (2013.01); D01H 13/045 (2013.01); D02G 3/322 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19919232 C1 20000713; AT 244783 T 20030715; CN 1271787 A 20001101; EP 1048763 A2 20001102; EP 1048763 A3 20001227; EP 1048763 B1 20030709; TW 494149 B 20020711; US 6293079 B1 20010925

INPADOC legal status


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