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. 16, 1990
Filed:
Sep. 14, 1989
Applicant:
Inventor:
Robert Lane, Accrington, GB;
Assignee:
Hollingsworth (U.K.) Ltd., Orn, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01H / ; D01H / ; A47L / ;
U.S. Cl.
CPC ...
57301 ; 15301 ; 57304 ; 57411 ; 134 21 ;
Abstract
A multi-position rotary spinning machine includes an endless belt guided along the machine past a plurality of open-end spinning units each having a valve for operation by cam means of the belt to bring an eccentric port into and out of gas communication with another eccentric port of the valve by virtue of rotation of a rotary valve member driven by engagement of cam studs and carried by the belt with projections, respectively, of the rotary valve member. The valves can be used for providing intermittent application of purging suction to the beater trash box of an open-end spinning or to a slub collection trough of a friction spinner.