US Patent 7213303 Closure device

A closure device (100) is provided for use with storage containers (50), such as plastic bags. The closure device (100) includes interlocking fastening strips (120, 130) having first and second ends and a slider member (200) movably installed upon the interlocking fastening strips to facilitate the occlusion and deocclusion thereof. The slider member (200) includes a pair of spaced-apart side walls (210, 220) which are positioned on opposite sides of the interlocking fastening strips (120, 130) and an intermediate body portion (240) therebetween which is positioned upon the interlocking fastening strips. The slider member (200) also includes notches (250, 260) formed therein which are adapted to engage cooperating protrusions (280, 290) formed on the interlocking fastening strips (120, 130) at the first and second ends (111, 112) thereof to obstruct movement of the slider member (200) beyond the first and second ends (111, 112).