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1. (WO2017157241) METHOD FOR USING DOUBLE-LAYERED UPWARD AND DOWNWARD INSERTION-PROOF ZIPPER

Pub. No.:    WO/2017/157241    International Application No.:    PCT/CN2017/076156
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Fri Mar 10 00:59:59 CET 2017
IPC: A44B 19/34
A44B 19/24
Applicants: ZHENG, Yunting
郑运婷
Inventors: ZHENG, Yunting
郑运婷
Title: METHOD FOR USING DOUBLE-LAYERED UPWARD AND DOWNWARD INSERTION-PROOF ZIPPER
Abstract:
A method for using a double-layered upward and downward insertion-proof zipper. The zipper comprises a zipper base (1), an upper chain (2), a lower chain (3), and a steel tape measure (4). The upper chain (2) comprises a left upper chain (12) and a right upper chain (13). The lower chain (3) comprises a left lower chain (16) and a right lower chain (17). Left upper insertion-proof plates (20) and right upper insertion-proof plates (24) respectively are provided on the left upper chain (12) and the right upper chain (13). Left lower insertion-proof plates (28) and right lower insertion-proof plates (32) respectively are provided on the lower left chain (16) and the right lower chain (17). An upper steel tape strip (34) and a lower steel tape strip (36) are provided on the steel tape measure (4). When in use, the zipper is arranged on a piece of luggage, the left upper insertion-proof plates (20) and the right upper insertion-proof plates (24) respectively are utilized to close the corresponding gaps between left upper teeth (18) on the left upper chain (12) and the corresponding gaps between right upper teeth (22) on the right upper chain (13), the left lower insertion-proof plates (28) and the right lower insertion-proof plates (32) respectively are utilized to close the corresponding gaps between left lower teeth (26) on the left lower chain (16) and the corresponding gaps between right lower teeth (30) on the right lower chain (17), and the upper steel tape strip (34) and the lower steel tape strip (36) are utilized to close the upper chain (2) and the lower chain (3), thus increasing the difficulty for a criminal to open the zipper.