Patent ID: 7384260
Filing Date: 2008-06-10
Classification: B29C,B29K,B29L

Abstract:
1. A parison pinching system for attaching to first and second mold halves, each mold half having first and second cavities, the system comprising: a first pinch bar for attaching to the first cavity of the first mold half, the first pinch bar of the first cavity of the first mold half having a surface and a protrusion that extends from the surface; a first pinch bar for attaching to the second cavity of the first mold half, the first pinch bar of the second cavity of the first mold half having a surface and a protrusion that extends from the surface; a second pinch bar for attaching to the first cavity of the second mold half, the second pinch bar of the first cavity of the second mold half having a surface and a protrusion that extends from the surface; and a second pinch bar for attaching to the second cavity of the second mold half, the second pinch bar of the second cavity of the second mold half having a surface and a protrusion that extends from the surface, wherein the protrusion of the first pinch bar of the first cavity of the first mold half and the protrusion of the second pinch bar of the first cavity of the second mold half are positioned for pinching a parison when the first and second mold halves close, and the protrusion of the first pinch bar of the second cavity of the first mold half and the protrusion of the second pinch bar of the second cavity of the second mold half are positioned for pinching a parison when the first and second mold halves close, and wherein each of the protrusions further comprises: a first side surface; a second side surface; and a flat surface that intersects the first and second side surfaces wherein each flat surface is substantially parallel to an inner mold face of each pinch bar's respective mold half.