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:
Aug. 04, 1992
Filed:
Jan. 09, 1992
Erich Jornot, Seuzach, CH;
Michael Leu, Winterthur, CH;
Maschinenfabrik Rieter AG, Winterthur, CH;
Abstract
A method and apparatus for controlling a drafting unit for textile slivers. The driving apparatus for the drafting unit is controlled by a main control and at least one auxiliary control. The drafting unit includes an upstream measuring element and a downstream measuring element which deliver measured signals to a central computer unit. A signal representing the inlet sliver cross-section is determined by means of an identification field parameter and by using the downstream measured signal. The identification field parameter is continuously adjusted during operation. A threshold switch is used to control the compensation for irregularities in the incoming sliver.