Abstract: A breakaway or pull apart zipper includes an improved retainer box and pin that decrease the chance of a jamb or hang up during unzipping of the zipper. The retainer box has a notch on the distal side that has a lateral stop shorter than one on a conventional retainer box. As such, the pin can rotate out of the retainer box during separation of the zipper sides as the garment is pulled apart instead of having to be pulled up and out of the retainer box. This rotation also causes the slider to tilt into the notch putting it into better alignment with the direction of the force pulling the zipper apart thereby facilitating separation of the pin from the slider and retainer box. The zipper also has a extended pin that loosely fits in the retainer box and goes from the bottom of the retainer box to at least half the slider height when the slider abuts the retainer box and the zipper is ready to come apart.

Abstract: In a sliding fastener, a fastener element is adhered at a predetermined pitch. The fastener element includes: a close-contact portion; and first and second engaging/disengaging portions which are respectively disposed on the first and the second tape surface sides of the close-contact portion. The close-contact portion has a first close-contact surface and a second close-contact surface which are respectively disposed in one direction and the other direction along the tape length direction. In addition, the pitch is set smaller than a sum of a dimension between the first and the second close-contact surfaces and a dimension between the first and the second close-contact surfaces. As a result, it is possible to make an element row rigid in a line in a more firm manner when a left and right element rows are coupled.

Abstract: A zipper (60) which can prevent the teeth disengagement from overbending or twisting force includes pluralities of teeth (1), wherein each tooth (1) comprises of a clamp portion (7) having a slit (2) for receiving a fabric tape, and one side thereof forms a left wall (12) of said tooth (1); a hook portion (3) is extended from another side the clamp portion (7) forming a dimple (8) and a right wall (11) of said tooth (1); a slot (4) parallel to said slit (2) is provided on an outer wall of said hook portion (3); a blocking member (5) parallel to said slot (4) is provided at said dimple (8); and a projected joint member (6) is provided onto said right wall (11) where is close to the slot (4).

Abstract: The present invention provides a metallic engaging element of vintage type which is cheap and has a required fixing strength and a slide fastener using the same engaging element, wherein each of a pair of leg portions formed so as to branch to right and left sections from the bottom of a body portion of the engaging element is formed into a L-like sectional shape including a sheet-like nipping portion and a leg portion side wall, the sheet-like nipping portion has notch portions for sandwiching one side edge portion of a fastener tape from the front and rear surfaces thereof, and at least one projecting portion is formed in each of leg portion inner wall surfaces opposing the one side edge portion of the fastener tape in the leg portion side wall.