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US 4,356,859 AGranted
Lost wax feeder and runner systems
AssigneeROLLS-ROYCE plc
InventorPhilip Savage
Life of this patent
Estimating the term…
Abstract
A wax pattern and runner assembly includes resilient means whereby upon expansion of the wax upon removal from a ceramic mould the resilient means are compressed.
Claims5
A wax pattern and runner including crushable means, which means are compressed upon thermal expansion of the wax pattern and runner when the wax is heated and removed from a ceramic mould.
Dependencies are inferred from the claim text.