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:
Feb. 01, 1977
Filed:
Mar. 03, 1969
Applicant:
Inventor:
William Edward Hawkins, Circleville, OH (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02J / ; D02J / ;
U.S. Cl.
CPC ...
57 3 / ; 28-14 ; 28 21 ; 28 7212 ; 5715 / ;
Abstract
Process and apparatus for increasing the coherency of a filamentary tow by passing a tow through a turbulent fluid zone exerting a braking and vortical action on the filaments, and withdrawing the tow. Apparatus for forming the turbulent zone comprises fluid streams directed into a funnel-shaped treating chamber so that a major portion of the spent fluid discharges in a direction opposite to the tow motion. Tow delivery apparatus for delivering the tow to the treatment preferably includes a jet device for opening and forwarding the tow.