Linear sliding zip fastener

Application Number: 00121771
Application Date: 2000.07.28
Publication Number: 1282556
Publication Date: 2001.02.07
Priority Information: 1999/7/30 JP 216653/1999
International: A44B19/04;A44B19/40
Applicant(s) Name: YKK, Corp.
Address:
Inventor(s) Name: Kato Takashi;Uesaka Yoshihiro;Imai Shigeru
Patent Agency Code: 11038
Patent Agent: sun zheng
Abstract A coil-shaped fastener element is comprised of a coupling head bulging to both sides, upper/lower leg portions adjacent the coupling head and a connecting portion for connecting the upper/lower leg portions. With providing a stepped portion in a center of the upper leg portion, a portion of the fastener element on a side of the coupling head is formed thick while a portion thereof on a side of the connecting portion is formed thin. A coupling space is provided between the upper and lower leg portions. A protruded portion protruded into the coupling space is provided in a back of the stepped portion of the upper leg portion. A slope portion is formed such that the coupling space is expanded from an inside of an upper portion of the coupling head to a base portion of the protruded portion. A core thread is inserted between the upper and lower leg portions and a side edge of the core thread is protruded toward the coupling head.