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. 15, 1977
Filed:
Jun. 17, 1975
James Weaver Hare, Martinsville, VA (US);
Allan Bryce Hughes, Wilmington, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A yarn winding apparatus with a rotatably driven barrel cam having a groove in its cylindrical surface and a slide member and traverse guide assembly engaging the groove constrained for reciprocating linear movement, as the cam rotates, is provided with a constant tension yarn laydown at the reversals by incorporating a resilient lever between the guide and the slide head capable of being flexed at the cam reversals within a predetermined critical range of from about 2.5.degree. to about 6.5.degree. with respect to a plane perpendicular to the linear movement of the guide assembly when the slide head moves in a horizontal path.