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US 2003/0196311 A1Published application
Evacuation port and closure for dewars
AssigneeSuperconductor Technologies, Inc.
InventorsWallace Yoshito Kunimoto, Angela May Ho, Elna Ruri Saito, Artura Soto, Gregory Ronald Harrah
Life of this patent
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Abstract
An improved dewar design that accelerates the manufacturing process of a dewar. In a preferred embodiment, the dewar includes an evacuation port that may be larger in size by a factor of ten over the size of evacuation ports of conventional dewars. The oversized evacuation port, however, does not result in an increase in the overall size or profile of the dewar. The dewar is evacuated and hermetically sealed using an re-usable evacuation tool.
Claims11
A process for manufacturing dewars, comprising the steps of
- providing a dewar having an oversized evacuation port,
- coupling an evacuation tool to the evacuation port of the dewar, the evacuation tool comprising a housing, a capping tool positioned in the housing, a low profile cap releaseably retained by the capping tool, and a side arm extending from the housing and being attachable to a vacuum pump,
- vacuum baking the dewar and evacuation tool, and
- actuating the capping tool to sealingly connect the cap to the evacuation port.
1 more element
Dependencies are inferred from the claim text.