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. 08, 1983
Filed:
Apr. 10, 1981
Applicant:
Inventors:
William M Farnhill, Burnley, Lancashire, GB;
Alan Parker, Breightmet, Bolton, Lancashire, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01H / ;
U.S. Cl.
CPC ...
57401 ; 57334 ;
Abstract
A roller for a friction spinning apparatus comprises a hollow perforated base member of aluminium or similar material, with a chrome dioxide plasma coating at most 0.004 inch. The perforations are at most 0.03 inch in diameter and provide a ratio of hole to total area of at least 25%. The thickness of the base member is at most 0.125 inch.