| 摘要 |
A coupling element for a slide fastener has a grooved head adapted to receive tongues of opposed elements to prevent lateral shifting of the elements. The tongues, as well as tapes embedded in the elements, are upwardly offset from the center of the elements so that the top edges of the tapes, the tongues and the grooves are coplanar. Flat abutment surfaces at the rear of the head absorb transverse loads and stabilize the fastener. |
