Plastic mold negative pressure cooling system
AssigneeLogic Devices, Inc.
InventorPaul E. Allen
Life of this patent
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Abstract
A negative pressure cooling system for cooling passageways in plastic molds includes a closed reservoir that is maintained under a high vacuum by a vacuum fluid pump with the outlet of the cooling passageway being connected to the reservoir inlet and with the reservoir outlet being connected to the cooling passageway inlet through a pressure pump and a fluid pressure regulator.
Claims7
A system for transferring heat between a plastic injection mold and a transfer liquid with the mold having a liquid passageway having an inlet and an outlet, a closed reservoir for transfer liquid having an inlet and an outlet, means for maintaining the interior of the reservoir at a high vacuum, means connecting the outlet of the liquid passageway to the inlet of the reservoir, and a pump means having an inlet connected to the outlet of the reservoir and an outlet connected to the inlet of the liquid passageway with said pump means producing a higher vacuum at its inlet than the high vacuum maintained in the interior of the reservoir.
Dependencies are inferred from the claim text.