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:
Jul. 10, 1990
Filed:
Apr. 13, 1988
Applicant:
Inventors:
Thomas Schenkel, Effretikon, CH;
Urs Staehli, Turbenthal, CH;
Assignee:
Rieter Machine Works, Ltd., Winterthur, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01G / ;
U.S. Cl.
CPC ...
19105 ; 19240 ; 73293 ; 340619 ; 222 56 ; 406 23 ; 406 31 ;
Abstract
A control unit maintains the fiber flock column in a feed chute at a set height. The control unit includes a row of light barriers located about a set height for emitting signals in response to interruption of the light barriers by fiber flock. An evaluation unit evaluates the signals to determine the actual height of the flock column and emits a control signal to adjust the feed rollers in the feed chute.