Textiles: spinning – twisting – and twining – Strand structure – Plied
Reexamination Certificate
2007-03-13
2007-03-13
Hurley, Shaun R. (Department: 3765)
Textiles: spinning, twisting, and twining
Strand structure
Plied
C057S255000
Reexamination Certificate
active
10913930
ABSTRACT:
A process for making a high-strength spun yarn begins by feeding one or more tows of substantially uncrimped continuous filaments of high-modulus material having a tensile modulus exceeding about 20×106psi through a high-speed stretch-breaking apparatus operating at low total draft ratio (preferably about 2.0) to break the filaments into high-modulus staple fibers having an average length in the range of about 5 to 6 inches. The tows advantageously are heavy, for example, having a denier of about 25,000 to about 500,000. Following the stretch-breaking step, the staple fibers are collected in sliver cans, and the staple fibers are advanced from the sliver cans to a spinning machine, where the fibers are spun into yarn. An important aspect of the invention is that no intermediate processes are performed between the stretch-breaking and spinning processes, which minimizes disruption of the alignment of and damage to the staple fibers.
REFERENCES:
patent: 2305312 (1942-12-01), Kern
patent: 3503100 (1970-03-01), Glynn III, et al.
patent: 3650104 (1972-03-01), Shepherd et al.
patent: 3852948 (1974-12-01), Ruddell et al.
patent: 4080778 (1978-03-01), Adams et al.
patent: 4112548 (1978-09-01), Sauvage
patent: 4477526 (1984-10-01), Lauterbach
patent: 4686096 (1987-08-01), Schulz et al.
patent: 4698956 (1987-10-01), Clarke et al.
patent: 4825635 (1989-05-01), Guevel et al.
patent: 4924556 (1990-05-01), Gilhaus
patent: 5456981 (1995-10-01), Olry et al.
patent: 5910361 (1999-06-01), Guevel et al.
patent: 6040051 (2000-03-01), Yamamoto et al.
patent: 6066395 (2000-05-01), Miyoshi et al.
patent: 6120894 (2000-09-01), Yamamoto et al.
patent: 6294252 (2001-09-01), Yamanaka et al.
patent: 6477740 (2002-11-01), Hansen
patent: 6783851 (2004-08-01), Crawford et al.
patent: 2003/0099830 (2003-05-01), Cho et al.
patent: 2003/0209428 (2003-11-01), Hirahara et al.
patent: 2004/0025486 (2004-02-01), Takiue
patent: 2004/0028884 (2004-02-01), Woolstencroft
patent: 2004/0081825 (2004-04-01), Perrotto et al.
patent: 2004/0109991 (2004-06-01), Guevel et al.
patent: 2005/0008855 (2005-01-01), Figuly et al.
patent: 1 205 587 (2002-05-01), None
patent: 01 280034 (1989-11-01), None
patent: 04327206 (1992-11-01), None
patent: WO 89/01999 (1999-03-01), None
International Search Report for PCT Application No. PCT/US2005/026706; Filed Jul. 28, 2005; Date of Completion Nov. 15, 2005; Date of Mailing Nov. 22, 2005.
Edwards Harold B.
Hamrick Donald Hershel
Hendrix James Easton
Alston & Bird LLP
Hurley Shaun R.
Stowe-Pharr Mills, Inc.
LandOfFree
High-strength spun yarn produced from continuous... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-strength spun yarn produced from continuous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-strength spun yarn produced from continuous... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3761391