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US 9,429,494 B1Granted
Leakage test method for a hermetically sealed disk drive enclosure
AssigneeWestern Digital Technologies, Inc.
InventorJohn R. Gustafson
Life of this patent
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Abstract
A method to test for leakage of an enclosure of a hermetically sealed disk drive is disclosed. The method includes filling the disk drive enclosure with a gas mixture that includes a tracer gas. The tracer gas may comprise helium gas or hydrogen gas, and constitute between 1% and 10% of the gas mixture. The method includes hermetically sealing the disk drive enclosure. The method also includes testing for the presence of the tracer gas outside of the disk drive enclosure.
Claims15
A method to test for leakage of a hermetically sealed disk drive enclosure, the method comprising:
- filling the disk drive enclosure with a gas mixture that includes a tracer gas selected from the group consisting of helium gas and hydrogen gas, the tracer gas constituting between 1% and 10% of the gas mixture;
- hermetically sealing the disk drive enclosure;
- and
- testing for the presence of the tracer gas outside of the disk drive enclosure.
1 more element
Dependencies are inferred from the claim text.