US Patent 7670052 Child proof re-closable bag

The invention provides for a slider for a child proof slider-zipper assembly having a leading edge, a trailing edge and a top edge with a top surface and a top frame comprising:a pair of protrusions at the bottom of the leading edge,a pair of protrusions at the bottom of the trailing edge, andan opening plow protruding from the top surface of the slider, between the leading edge and trailing edge, and having height not more than the height of the slidersuch that the top surface projects upwards from the top frame.