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:
Jun. 18, 2024
Filed:
Aug. 03, 2022
Andritz Asselin-thibeau, Elbeuf, FR;
Frédéric Demange, Montville, FR;
Jean-Christophe Laune, La Londe, FR;
Andritz Asselin-Thibeau, Elbeuf, FR;
Abstract
Method for operating a needle loom comprising at least one needle board in which a web or lap of fibres is passed in front of the needles, said web or fibre moving in a so-called feed direction, or machine direction or MD, between two end positions in which the free ends of the needles have a zero speed, and the at least one needle board and/or needles are driven in a back-and-forth movement in a direction other than the feed direction, particularly in the perpendicular direction, or a direction that is substantially perpendicular to the plane of the lap or web, such that the free ends of the needles have, in a first interval extending in the lap or web between an outer surface of the web or lap of fibres and an end position, a first movement having a first speed profile as an absolute value for a first duration, then, in a second interval extending in the lap or web between said one end position and said one outer surface, a second movement having a second speed profile as an absolute value for a second duration, is characterised in that the maximum speed of the second profile is higher than the maximum speed of the first profile and/or the second duration is shorter than the first duration.