Patent ID: 11958126
Assignee: GE PRECISION HEALTHCARE LLC
Field: Machine tools (Mechanical engineering)
Classification: CPC B  A  C  F | IPC A  B  C  F

Claim 12:
13. A method for making a container for retaining a gas or liquid, the method comprising:
casting a first part of a metallic material, wherein the first part has a first mating surface and a non-mating surface, and wherein the metallic material has pores defined within the first mating surface;
processing the first mating surface of the first part by performing visco-plastic stirring with a friction stir welder to reduce the pores defined therein;
obtaining a second part made of a metallic material, the second part having a second mating surface and a second non-mating surface, wherein at least one of the first part and the second part defines a passageway; and
brazing the first part and the second part together such that the first mating surface of the first part is in contact with the second mating surface of the second part;
wherein a reservoir is formed between the first non-mating surface of the first part and the second non-mating surface of the second part when the first part and the second part are brazed together, wherein the reservoir is configured to retain the gas or liquid therein, and wherein the container is configured such that the gas or liquid exits the reservoir only via the passageway.