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:
Jul. 27, 1976
Filed:
Oct. 07, 1974
Hans Heinrich Richter, Warwick, RI (US);
Leesona Corporation, Warwick, RI (US);
Abstract
The instant invention relates to a continuous process for the manufacture of heat set yarns. The process comprises firstly passing a two or more ply twisted filament or spun yarns having a latent bulk in the single ends into a first heating zone to develop the latent bulk, passing the yarn into a second heating zone where the yarn is heated to a temperature higher than it was heated in the first zone, and then passing the yarn into a cooling zone while imposing a false twist which runs back into its second heating zone. The second heating zone and the cooling zone serve to set the bulk and the twist and to increase the torque of the yarn. The yarn is then fed to a take-up and wound into a package.