| 摘要 |
A child-proof locking system for a slide fastener includes a slide which engages a pair of molded plastic interlocking strips. The slide is carried in a puller having a proximal grip and a distal latch. When the slide fastener is closed, the puller seats in a strike, with the latch having a plurality of arms abutting a distal end of the strike to lock the puller. To open the slide fastener, the latch arms are pressed inwardly with one hand, to clear the strike, while the grip is pulled away from the strike with the other hand. |
| 主权项 |
1. A child-proof locking system for a slide fastener, the slide fastener comprising a pair of interlockable flexible plastic strips, a slide engaging each strip, the slide being movable between an open position at one end of the fastener, wherein the strips are separated, to a closed position at an other end of the fastener, wherein the strips are interlocked, the system including a puller and a strike, the slide being fixed to the puller, the strike being fixed at the other end of the fastener, the strike including a passage, the passage receiving at least a transition portion of the puller when the slide is in the closed position, the puller including a latch, the latch extending beyond the passage toward the other end of the fastener, the latch including a pair of coplanar arms and an arm which deflects along a plane perpendicular to the coplanar arms, each arm including a stop, the stops being in engagement with an edge of the strike to prevent the puller from moving toward the one end of the fastener, the arms being deflectable to positions wherein the stops disengage the edge of the strike, whereby the coplanar arms may be deflected by being compressed between one's thumb and middle finger while the arm which deflects along the perpendicular plane is simultaneously depressed by an index finger of the same hand to withdraw the puller from the strike and move the slide to the open position. |
