US Patent 7291006 Check valve lip seal for an injection molding machine

Patent 7291006 was granted and assigned to Husky Injection Molding Systems on November, 2007 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Husky Injection Molding Systems

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7291006

Date of Patent

November 6, 2007

Patent Application Number

10875047

Date Filed

June 24, 2004

Patent Primary Examiner

‌

Kevin P. Kerns

Patent abstract

A check valve for a molding machine. The check valve has a stem portion and a ring portion movable along said stem portion between a melt channel open position and a melt channel closed position. A groove is formed in a forward face of the ring portion. The groove, in operation, receives melt to force an outer circumferential portion of the ring in a radial direction to provide a seal between the ring portion and a wall in the machine.