Processing of vacuum-sealed dewar assembly

Details Processing of vacuum-sealed dewar assembly Processing of vacuum-sealed dewar assembly

1994-09-29

1995-07-18

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 41, 445 43, 445 70, H01J 926, H01J 939

Patent

active

054336392

ABSTRACT:
A dewar assembly is cleaned, baked out, assembled, and joined in a single vacuum system without exposing the components to ambient atmosphere. The vacuum system preferably has a first chamber with multiple subchambers that can be isolated from each other, and a second chamber that can be isolated from the first chamber. The multiple chambers and subchambers prevent cross contamination during the various process steps, and also permit multiple dewar assemblies to be batch processed at different stages simultaneously. The components of the dewar assembly are loaded into one subchamber and cleaned, and thereafter moved to another subchamber for bakeout. The dewar getter is heated in the second chamber and moved to one of the subchambers for assembly. The components of the dewar assembly are assembled and joined.

REFERENCES:
patent: 3139678 (1964-07-01), Anthony et al.
patent: 3203083 (1965-08-01), Obenhaus
patent: 3630590 (1971-12-01), Strubig et al.
patent: 3751800 (1973-08-01), Daniels et al.
patent: 4166563 (1979-09-01), Peyraud et al.
patent: 4382646 (1983-05-01), Sunde
patent: 4467953 (1984-08-01), Yamamoto
patent: 4799911 (1989-01-01), Relder
patent: 4799912 (1989-01-01), Salgo
patent: 4919291 (1990-04-01), Romano et al.

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