Patent ID: 6627134
Filing Date: 2003-09-30
Classification: B29C

Abstract:
A machine for forming objects comprising:a first rotatable screw having threads for operating on material which forms at least a part of the object, the threads arranged in a selected direction; a second rotatable screw having threads for operating on material which forms at least a part of the object, the threads arranged in the selected direction; a single barrel containing the first rotatable screw and the second rotatable screw; a linear drive for causing axial movement of the first rotatable screw and the second rotatable screw; a single screw drive for selectively causing rotation of the first rotatable screw and the second rotatable screw; and a single clutch for selectively connecting the single screw drive to one of: (1) the first rotatable screw; and (2) both the first rotatable screw and the second rotatable screw.