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US 5,533,882 AGranted
Hot runner valve gated system
AssigneeHusky Injection Molding Systems Ltd.
InventorsDieter Gessner, Martin Osterode
Life of this patent
Estimating the term…
Abstract
A hot runner valve gated system comprising at least one nozzle housing adapted to be positioned in a manifold plate. The nozzle housing includes a gate orifice and a reciprocal valve stem positioned therein. The system also includes a mechanism for moving the valve stem for opening and closing the gate valve and is designed to maintain the mechanism for moving the valve stem in a substantially cooled state. The mechanism for moving stem is positioned coaxially relative to the nozzle housing.
Claims22
A hot runner valve gated system which directs melt from a melt channel to a mold cavity, comprising:
- at least one housing adapted to be positioned in a mold plate, the housing including a gate orifice adapted to be positioned adjacent the mold cavity and a channel means extending therethrough and in communication with said melt channel for directing melt to the orifice;
- a reciprocal valve stem positioned within the housing;
- means for reciprocating the valve stem positioned adjacent the housing for opening and closing the gate orifice;
- and
- means for maintaining the means for reciprocating in a substantially cooled state, said means for maintaining including a sleeve adjacent the means for reciprocating, wherein said housing is positioned coaxially within said sleeve, and wherein said sleeve has at least one opening therein and including an attachment between the means for reciprocating and the valve stem extending through said opening in the sleeve.
2 more elements
Dependencies are inferred from the claim text.