WO2025103807 - FEED SYSTEM FOR FEEDING A SECONDARY THREAD TO A STITCHING STATION OF A SEWING MACHINE AND SEWING MACHINE COMPRISING SAID FEED SYSTEM

National phase entry is expected:
Publication Number WO/2025/103807
Publication Date 22.05.2025
International Application No. PCT/EP2024/081126
International Filing Date 05.11.2024
Title [English] FEED SYSTEM FOR FEEDING A SECONDARY THREAD TO A STITCHING STATION OF A SEWING MACHINE AND SEWING MACHINE COMPRISING SAID FEED SYSTEM [French] SYSTÈME D'ALIMENTATION POUR ACHEMINER UN FIL SECONDAIRE À UNE STATION DE PIQUAGE D'UNE MACHINE À COUDRE ET MACHINE À COUDRE COMPRENANT LEDIT SYSTÈME D'ALIMENTATION
Applicants ** ROBERT BOSCH GMBH Postfach 30 02 20 70442 Stuttgart, DE
Inventors ** CECERE, Martino via Santa Teresa 3 Madugno, IT MACCHIA, Domenico via S. Stefano n.20 70010 Casamassima - Bari, IT MARTUCCI, Luciano via Piave n. 93 Bitonto (Bari), IT GIANNOCCARO, Renato Via G. Fortunato 1/B7 Bari, IT
Priority Data 102023000024204  15.11.2023  IT
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Quotation for National Phase entry

Country Stages Total
China Filing 923
EPO Filing, Examination 4610
Japan Filing 572
South Korea Filing 578
USA Filing, Examination 2635
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Total: 9318
Abstract [English] A feed system for a sewing machine has a feed wheel (13), which comprises a circumferential surface (14) provided with a groove (15) of variable depth for housing a secondary thread (29); and a mechanical transmission (16) for transmitting the motion from a drive shaft (11) of the sewing machine to the feed wheel (13); the circumferential surface (14) of the feed wheel (13) comprising a first portion (27), in which the groove (15) has a first depth (H1) such that the secondary thread (29) is compressed between the feed wheel (13) and a support platform (2) of the sewing machine, and a second portion (28), in which the groove (15) has a second depth (H2) such that the secondary thread (29) is at a distance from the support platform (2). [French] Un système d'alimentation pour une machine à coudre comprend une roue d'alimentation (13), qui comprend une surface circonférentielle (14) pourvue d'une rainure (15) de profondeur variable destinée à loger un fil secondaire (29) ; et une transmission mécanique (16) destinée à transmettre le mouvement d'un arbre d'entraînement (11) de la machine à coudre à la roue d'alimentation (13) ; la surface circonférentielle (14) de la roue d'alimentation (13) comprenant une première partie (27), dans laquelle la rainure (15) présente une première profondeur (H1) de telle sorte que le fil secondaire (29) est comprimé entre la roue d'alimentation (13) et une plateforme de support (2) de la machine à coudre, et une seconde partie (28), dans laquelle la rainure (15) présente une seconde profondeur (H2) de telle sorte que le fil secondaire (29) est à une distance de la plateforme de support (2).