Abstract: A roller zipper slide includes a slide body having a longitudinal slot on a top slide body block in communication with an internal chamber thereof and two coupling grooves located at two opposite lateral sides of the longitudinal slot. The roller zipper slide further includes a roller pivotally having two pivot pins respectively pivotally coupled to the coupling grooves and a bottom side thereof projecting into the internal chamber of the slide body right above the engaging position between the left and right series of teen of the zip fastener, thereby improving sliding mobility, reducing zipper teeth wear and prolonging zipper slide lifespan.

Abstract: A zipper head structure comprises a pull tab, a base and a universal joint. The base has a receiving space for receiving a zipper chain scoop. The universal joint is connected between the pull tab and the base. Through the design of the universal joint, the pull tab can rotate for 360 degrees to match the motion of the zipper, hence providing the most appropriate and labor-saving angle.

Abstract: A two way open-end zipper formed of two zipper tapes, left and right top stops, a plug pin and a fixed pin and two slides is disclosed in which the fixed pin has a first upright sidewall, a second upright sidewall, a longitudinal sliding way defined between the first and second upright sidewalls for the passing of the slides during installation of the slides, and a springy hook projected from the first upright side wall into the longitudinal sliding way and adapted to stop the slides in place when the slides moved downwards along the zipper tapes to the lower limit position.

Abstract: A zipper slide with means for restraining a pull tab thereof from swinging is provided. The zipper slide is composed of a slide and a pull tab. The pull tab includes a tab portion and a U-shaped buckle connected to a rear end of the tab portion. The slide is formed of a central passage for the U-shaped buckle to extend therethrough and be fixed thereto. An elastic projection axially extends from the rear end of the tab portion, and the slide is formed at a top front with a hollow space into which the elastic projection extends when the tab portion is in a flat position relative to the slide. When the tab portion is pivotally turned upward relative to the slide, the elastic projection is brought into contact with a front edge of the hollow space, and a further pull would deform the elastic projection to bring the same to move out of the hollow space for moving the slide forward or backward.