IP Library › Granted Patent US 6,858,169
Granted Patent B2
US 6,858,169 · App. 10/726,762 · Granted Feb 22, 2005

Process of making a dimensionally stable yarn

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Quick Facts
Patent No.
US 6,858,169
App. No.
10/726,762
Granted
Feb 22, 2005
Kind
B2
Abstract

A product includes a dimensionally stable polymeric multifilament yarn having a decitex per fiber count DPF of at least 7.5 and a fatigue strength retention FR, wherein preferred yarns are spun and drawn such that FR increases when DPF increases. Particularly preferred yarns are fabricated from poly(ethylene terephthalate) and have a DPF of between 10 and 20.

Claims (11)

1. A method of forming a yarn comprising:

providing a polymeric material and spinning a plurality of filaments from the polymeric material; and

forming a dimensionally stable yarn from the plurality of filaments, wherein the step of forming the yarn includes drawing the yarn from the plurality of filaments wherein the yarn has a decitex per fiber count DPF of at least 7.5 and a fatigue strength retention FR; and

wherein the yarn is spun and drawn such that FR increases when DPF increases.

2. The method of claim 1 wherein the polymeric material comprises a polyester.

3. The method of claim 2 wherein the polyester is poly(ethylene terephthalate).

4. The method of claim 3 wherein DPF is between 10 and 20.

5. The method of claim 1 wherein the yarn has a dimensional stability defined by E x +TS of no more than 12.

6. The method of claim 1 wherein the increase in fatigue strength retention per DPF is no less than 1%.

7. The method of claim 1 wherein an adhesion promoted finish is applied to the yarn and the yarn is twisted into a cord.

8. The method of claim 7 wherein the twisted yarn or cord is disposed within a rubber.

Assignments (12)
TRANSFER OF SECURITY INTEREST IN PATENTS Recorded Mar 9, 2016
From: FSJC VIII, LLC
To: DFT2 FINANCE, LLC
Reel/Frame 038044/0917 →
CHANGE OF NAME Recorded Dec 24, 2015
From: PERFORMANCE FIBERS, INC.
To: DURAFIBER TECHNOLOGIES (DFT), INC.
Reel/Frame 037372/0138 →
SECURITY INTEREST Recorded Dec 22, 2015
From: DURAFIBER TECHNOLOGIES (DFT), INC.; DURAFIBER TECHNOLOGIES (DFT) OPERATIONS, LLC; DSE HOLDING CORP.; DURAFIBER TECHNOLOGIES (DFT) SCOTTSBORO, INC.; DURAFIBER TECHNOLOGIES (DFT) WINFIELD, INC.; DFT DURAFIBER TECHNOLOGIES HOLDINGS, INC.; DURAFIBER TECHNOLOGIES (DFT) GROUP, INC.; INA FIBERS HOLDINGS, LLC; DURAFIBER TECHNOLOGIES (DFT) ENTERPRISES, INC.; DURAFIBER TECHNOLOGIES (DFT) HOLDINGS II, LLC
To: JPMORGAN CHASE BANK, N.A., AS AGENT
Reel/Frame 037347/0753 →
PATENT SECURITY AGREEMENT Recorded Dec 22, 2015
From: DURAFIBER TECHNOLOGIES (DFT), INC. (F/K/A PERFORMANCE FIBERS, INC.)
To: FSJC VIII, LLC, AS AGENT
Reel/Frame 037362/0824 →
RELEASE OF SECURITY INTEREST Recorded Dec 21, 2015
From: WELLS FARGO CAPITAL FINANCE, LLC, SUCCESSOR BY MERGER TO WELLS FARGO CAPITAL FINANCE, INC. (FORMERLY KNOWN AS WELLS FARGO FOOTHILL, INC.), AS ADMINISTRATIVE AGENT
To: DURAFIBER TECHNOLOGIES (DFT), INC. (FORMERLY KNOWN AS PERFORMANCE FIBERS, INC.)
Reel/Frame 037344/0079 →
CONFIRMATION OF PATENT SECURITY INTEREST ASSIGNMENT Recorded Mar 23, 2015
From: PERFORMANCE FIBERS HOLINDGS FINANCE, INC.
To: DFT DURAFIBER TECHNOLOGIES HOLDINGS, INC.
Reel/Frame 035258/0783 →
SECURITY AGREEMENT Recorded Aug 16, 2011
From: PERFORMANCE FIBERS, INC.
To: FSJC VIII, LLC, AS AGENT
Reel/Frame 026760/0182 →
SECURITY AGREEMENT Recorded May 21, 2009
From: PERFORMANCE FIBERS, INC.
To: PERFORMANCE FIBERS HOLDINGS FINANCE, INC.
Reel/Frame 022719/0612 →
RELEASE OF SECURITY INTEREST Recorded Mar 5, 2008
From: GENERAL ELECTRIC CAPITAL CORPORATION
To: PERFORMANCE FIBERS, INC.; PERFORMANCE FIBERS HOLDINGS, INC.; PERFORMANCE FIBERS ENTERPRISES, INC.
Reel/Frame 020599/0191 →
SECURITY AGREEMENT Recorded Mar 5, 2008
From: PERFORMANCE FIBERS, INC.
To: WELLS FARGO FOOTHILL, INC.
Reel/Frame 020599/0290 →
SECURITY INTEREST Recorded Jan 31, 2005
From: PERFORMANCE FIBERS, INC.; PERFORMANCE FIBERS HOLDINGS, INC.; PERFORMANCE FIBERS ENTERPRISES, INC.
To: GENERAL ELECTRIC CAPITAL CORPORATION
Reel/Frame 016195/0354 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 21, 2005
From: HONEYWELL INTERNATIONAL, INC., A CORP. OF DELAWARE
To: PERFORMANCE FIBERS, INC.
Reel/Frame 016164/0705 →