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1. WO1998013288 - DETECTION OF BROKEN FILAMENTS

Publication Number WO/1998/013288
Publication Date 02.04.1998
International Application No. PCT/US1997/016564
International Filing Date 18.09.1997
Chapter 2 Demand Filed 26.03.1998
IPC
B65H 63/032 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
63Warning or safety devices for use when unwinding, paying-out, forwarding, winding, coiling, or depositing filamentary material, e.g. automatic fault detectors or stop-motions
02responsive to reduction in tension, failure of supply, or breakage, of material
024responsive to breakage of materials
028characterised by the detecting or sensing element
032electrical or pneumatic
CPC
B65H 2701/31
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
2701Handled material; Storage means
30Handled filamentary material
31Textiles threads or artificial strands of filaments
B65H 2701/38
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
2701Handled material; Storage means
30Handled filamentary material
38Thread sheet, e.g. sheet of parallel yarns or wires
B65H 63/0327
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
63Warning or safety devices, e.g. automatic fault detectors, stop-motions
02responsive to reduction in material tension, failure of supply, or breakage, of material
024responsive to breakage of materials
028characterised by the detecting or sensing element
032electrical or pneumatic
0321using electronic actuators
0327using piezo-electric sensing means
Applicants
  • E.I. DU PONT DE NEMOURS AND COMPANY [US]/[US]
Inventors
  • NGUYEN, Young, Dung-Thanh
Agents
  • HIGGS, W., Victor
  • HAMBY, Jane O
Priority Data
08/720,33327.09.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DETECTION OF BROKEN FILAMENTS
(FR) DETECTION DE FILAMENTS CASSES
Abstract
(EN)
Individual broken filaments in a running threadline, e.g., freshly-melt-spun filaments (1) may be detected and recorded by a novel piezoelectric film sensor device (40).
(FR)
L'invention concerne la détection et l'enregistrement de filaments individuels cassés dans un parcours de fil, par exemple des filaments (1) fraîchement filés par fusion, par un capteur (40) nouveau, constitué d'une couche mince piézoélectrique.
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