Patent ID: 7163133

Claim:
A manufacturing apparatus for moving sliders for opening and closing mating zipper elements along the mating zipper elements, said apparatus comprising: a roller rotating about an axis substantially perpendicular with a path of a film including the mating zipper elements and contacting the film as the film moves in the film path at a speed equal to the speed of rotation of said roller; and a projection rotating about an axis at a speed different than the rotational speed of said roller, said projection rotating into proximity to the moving film along predetermined lengths of the film so as to be contactable with sliders mounted thereon, wherein said projection comes into contact with sliders positioned along the mating zipper elements of the predetermined lengths of film and pushes those sliders along the mating zipper elements to respective registered positions, and wherein said roller includes a depression formed in an outer surface thereof and a portion of said projection is positioned in the depression.