| 摘要 |
A readily burstable slide fastener 1 for an inflatable device, such as a lifejacket 101', comprises a first stringer 3, a second stringer 5 and a slider 19 slidably mounted on the second stringer 5. At a weakened region 23 along the slide fastener 1 non-engaging guide elements 33' are provided along each of the stringers 3, 5 and locking elements 41 are provided at the ends of the guide elements 33'. Each locking element 41 has the general form of two spaced coupling elements 15 which are joined together, the locking element 41 on one tape 4 being bent to engage and disengage with the opposed locking element 41 of the other tape 4. The locking elements 41 in use inhibit separation of the first and second stringers 3, 5 so that when a bursting force is applied at the weakened region 23 in a first direction substantially perpendicular to the plane in which the coupling elements 15 lie at the weakened region 23, the locking elements 41 and coupling elements 15 adjacent to the weakened region 23 are disengaged. |
