Patent ID: 8286940
Filing Date: 2012-10-16
Classification: B29C,Y10T

Abstract:
1. An injection molding valve comprising: a housing having a first bore extending across a length of the housing and a second bore intersecting the first bore and including at least one groove disposed circumferentially on a wall of the second bore between the first bore and outside of the housing; a rotatable member positioned within the second bore having a hole through the rotatable member; an operator coupled to the rotatable member to rotate the rotatable member between an open position wherein the hole in the rotatable member is aligned with the first bore and a closed position wherein the hole is positioned to block to the first bore; a port in communication with the at least one groove, wherein the port is configured to receive thermoplastic therethrough to deliver thermoplastic to the groove of the wall; and the port and at least one groove are fluidly isolated from a passage fluidly connected to the hole through the rotatable member; and a molded-in-place thermoplastic seal fitting within the groove and port to prevent thermoplastic injected along the first bore from stringing out of the valve through the second bore or port.