Patent ID: 6702990
Filing Date: 2004-03-09
Classification: B01L,Y10S,Y10T

Abstract:
A cutting tip for attaching to a suction tube and for cutting a spot from a sheet of semi-solid material, said cutting tip comprising:a hollow tube with open opposite ends, wherein an upper end thereof is arranged for attaching to a lower end of said suction tube, and a lower end thereof is arranged for cutting said spot from said sheet of semi-solid material; and a compressible barrier movably positioned within said hollow tube, wherein a lower section of said hollow tube between an initial position of said barrier and said lower end of said hollow tube is of generally constant diameter, said barrier is compressed within said hollow tube for being moved when pushed upon and for staying in position when released, said barrier is arranged for being positioned between said spot and a plunger extending from said suction tube for preventing said spot from contaminating said plunger, said barrier is arranged for being pushed downward by said plunger to a position flush with said lower end of said hollow tube for pushing said spot out of said hollow tube.