Title: Automatic locking hidden zip drawing head
Application Number: 92111255 Application Date: 1992.09.29
Publication Number: 1084720 Publication Date: 1994.04.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A44B19/30
Applicant(s) Name: Chen Shizong Address:
Inventor(s) Name:
Attorney & Agent: LIN CHANGAN
Abstract:
     The noumenon of the pull head forms a chain tooth guide grove in shape of Y-like roughly. On the central position of front end of pull head there is an island shape separating device which possesses of a setting slot with an appropriate space for holding an elastic latch sheet. The elastic latch sheet is interconnected with pull piece corresponding to the acting force of the pull piece said elastic latch sheet will change in unlatching position from the ordinarily automatic latching position when the pull head is pulled.
Time: 10