Patent ID: 6558148
Filing Date: 2003-05-06
Classification: B29C

Abstract:
A gas pin mechanism comprising:an outer pin member having an internal passageway; said outer pin member having a first body portion, a first head portion at one end and a first valve member at the other end, said first head portion having a cavity therein; an inner pin member; said inner pin member having a second body portion positioned in said internal passageway, a second head portion at one end and positioned in said cavity in said first head portion and a second valve member at the other end adapted to mate with said first valve member; a spring member positioned longitudinally behind said second head portion and biasing said inner pin member relative to said outer pin member in a direction to mate said first and second valve members; and said first valve member and said second valve member forming a valve mechanism for controlling the flow of a fluid material therethrough; wherein fluid material introduced against said second head portion can overcome said biasing of said inner pin member and separate said first and second valve members in order to allow flow of fluid material therethrough.