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:
Sep. 12, 1978
Filed:
Sep. 01, 1977
William Norman Russell, Colonial Heights, VA (US);
James Isaac Bruton, Colonial Heights, VA (US);
Ian Charles Twilley, Chesterfield County, VA (US);
Allied Chemical Corporation, Morris Township, Morris County, NJ (US);
Abstract
Preparation of improved yarns from synthetic linear polymer filaments by melt spinning followed by substantially immediately heating said filaments above their second order transition temperature and drawing said filaments substantially instantly at a temperature in the range of from about above their second order transition temperature to within about 5.degree. C. of their melting point, said heating being preceded by pretensioning of said filaments at a constant tension level greater than about 0.005 gram per denier and less than a tension level required to draw said filaments.