Patent ID: 6904667

Claim:
A method of fabricating structure of a Coriolis flowmeter including flow tube means; said method comprising the steps of: forming a core defining a material flow path of said flow tube means by injecting a low melting point metal into a cavity of a core mold with said cavity defining said material flow path; placing said formed material flow path core into a cavity of a wrapper mold and closing said wrapper mold to form a cavity between the outer surface of said formed material flow path core and the interior surface of said cavity of said wrapper mold; said cavity of said wrapper mold defines the outer surface of said flow tube means; filling said cavity of said wrapper mold with plastic to form a molded plastic flow tube means that contains said formed material flow path core; removing said molded plastic flow tube means containing said formed material flow path core from said wrapper mold; and removing said formed material flow path core from said molded plastic flow tube means by raising the temperature of said molded plastic flow tube means above the melting temperature of the low melting point metal forming said material flow path core.