Vacuum package tubeless enclosure with self-welded flanges

Details Vacuum package tubeless enclosure with self-welded flanges Vacuum package tubeless enclosure with self-welded flanges

1993-08-18

1995-02-07

Ramsey, Kenneth J.

Receptacles

Envelope for electric lamp or similar device

With evacuating stem or valve

228116, 228208, B23K 2002

Patent

active

053869206

ABSTRACT:
A vacuum package assembly (20) is prepared by self-welding the flanges (32 and 43) of two housings (28 and 36) together under an applied pressure, while the housings (28 and 36) and any enclosed structure or device are contained within an evacuated enclosure. The flanges (32 and 43) are preferably made of copper, with their respective self-welding members (34 and 46) specially prepared to enhance self-welding performance. The preferred treatment for the self-welding members (34 and 46) is to deposit a thin layer of nickel onto the self-welding members (34 and 46 ), deposit a thin layer of gold over the nickel, and heat the bonding member to elevated temperature to interdiffuse the gold into the self-welding member (34 and 46 ).

REFERENCES:
patent: 3139678 (1964-07-01), Anthony et al.
patent: 3203083 (1965-08-01), Obenhaus
patent: 3751800 (1973-08-01), Daniels et al.
patent: 4467953 (1984-08-01), Yamamoto
patent: 4919291 (1990-03-01), Romano et al.

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