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:
Oct. 27, 1987
Filed:
Sep. 25, 1986
Applicant:
Inventors:
John Whiteley, Clitheroe, GB;
Fred A Shepherd, Killearn, GB;
Assignee:
Hollingsworth U.K., Ltd., Accrington, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01H / ;
U.S. Cl.
CPC ...
57401 ;
Abstract
The perforated roller of a friction spinning unit includes an outer sleeve having vent openings at one end to provide an air leakage path which by-passes the adjacent bearing of the sleeve, and further by-passing vent passages radially outwardly of the bearing at the opposite end of the sleeve.