| US 7,591,227 B2 | ||
| Systems and methods for thread handling and/or cutting | ||
| Alberto Landoni, 3 Strada Prov. Busto, Cassano n. 3, P.O. Box n.60, 21054 Fagnano Olona (VA) (Italy) | ||
| Filed on Mar. 14, 2008, as Appl. No. 12/48,943. | ||
| Claims priority of provisional application 60/989174, filed on Nov. 20, 2007. | ||
| Prior Publication US 2009/0126611 A1, May 21, 2009 | ||
| Int. Cl. D05B 65/00 (2006.01); D05B 57/26 (2006.01) | ||
| U.S. Cl. 112—475.17 [112/291; 83/229] | 3 Claims |
| 1. A method of cutting thread, comprising:
rotating through an angle of greater than 360 degrees a rotary hook assembly to make a lock stitch formed by a top thread
and a bottom thread, wherein at least one component is attached to or integral with the rotary hook assembly and wherein the
component rotates with the rotary hook assembly;
separating a first portion of the top thread from a second portion of the top thread using the component; and
rotating the rotary hook assembly in a reverse direction so as to cut the top thread and the bottom thread with a cutting
blade contacted to at least a part of a surface of the component;
wherein the component comprises a thread guard.
|