The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1992
Filed:
Nov. 17, 1989
Applicant:
Inventors:
Hugo Specker, Sempach, CH;
Paul Schaffner, Kriens, CH;
Assignee:
Rhone-Poulenc Viscosuisse S.A., Emmenbruke, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ;
U.S. Cl.
CPC ...
264168 ; 2642107 ; 2642108 ; 26421115 ; 264234 ; 2642896 ; 2642905 ; 2643 / ; 264345 ;
Abstract
A process for the manufacture of a crimped polyester yarn obtained from a polyester partially-oriented yarn comprising fabricating a partially-oriented polyester yarn by a high-speed process, cooling the partially-oriented polyester yarn, cold drawing the cooled yarn, and subjecting the cold drawn polyester yarn to a thermal treatment under tensionless conditions or under controlled overfeed conditions.