Air introduction valve for a mold assembly
OwnerGerard Jay Bellasalmainventor
Life of this patent
Estimating the term…
Abstract
An air injection valve assembly includes an actuator and a valve section. The valve section generally includes a valve body and a valve stem movable therein. The valve stem includes a valve head which mates with a valve seat when in the closed position. A valve head facing surface of the valve head is manufactured to be completely flush with a valve seat facing surface of the valve seat. The facing surfaces are preferably contoured to exactly match the interior contour of the mold cavity. When in the closed position the valve head blends into the mold cavity and thus minimizes the chance of a blemish being formed on the molded article.
Claims19
An air introduction valve assembly for a mold comprising:
- an actuator;
- a valve body;
- and
- a valve stem movable between an open position and a closed position by said actuator, said valve stem retracted into said valve body when in said open position.
An air introduction valve assembly for a mold comprising:
- an actuator;
- a valve body including a valve seat;
- a valve stem including a valve head, said valve head movable between an open position and a closed position by said actuator, said valve head retracted into said valve seat when in said open position;
- and
- an anti-rotation assembly to prevent rotation of said valve stem relative to said valve body.
Dependencies are inferred from the claim text.