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US 4,660,801 AGranted
Mold core including ejection sleeve
AssigneeHusky Injection Molding Systems Ltd.
InventorRobert D. Schad
Life of this patent
Estimating the term…
Abstract
A mold core for ejecting a cup-shaped workpiece including a core base, a core cap fixedly engaged with said core base and a core sleeve seated on the core base and engageable with said core cap. A fluid ejection channel is formed at the interface of the core base and core sleeve for ejecting gaseous fluid to the peripheral surface of the mold core.
Claims10
A mold core for ejecting a cup-shaped workpiece which comprises:
- a core base;
- a core cap fixedly engaged with said core base;
- a core sleeve seated on said core base and engageable with said core cap, said core cap, core base and core sleeve forming a peripheral surface for molding a cup-shaped workpiece thereon, said sleeve being moveable between a forward position and a rearward position relative to said cap;
- a fluid ejection channel formed at the interface of said core base and core sleeve for ejecting gaseous fluid to said peripheral surface having an open position defined by forward movement of said core sleeve and a closed position defined by rearward movement of said core sleeve;
- a fluid channel means communicating with said fluid ejection channel;
- and means for limiting the forward movement of said core sleeve.
3 more elements
Dependencies are inferred from the claim text.