Vacuum device having a getter device

Details Vacuum device having a getter device Vacuum device having a getter device

1997-06-19

2000-06-06

Freay, Charles G.

Pumps

Electrical or getter type

313560, 313481, F04B 3702

Patent

active

060710802

ABSTRACT:
A vacuum device has an envelope and a getter assembly mounted within the envelope. The getter assembly includes a reservoir for containing getter material and a deflector having a surface located opposite the getter material and is oriented to deflect the getter material in a predetermined direction within the vacuum device. The deflector surface has raised and/or depressed portions, such as ribs or undulations, in the direction of diffusion of the getter material. These portions reduce the accumulation of getter material on the deflector during getterfiring, resulting in a much reduced likelihood that getter material particles may break loose from the deflector. By preventing loose particles within the vacuum device, the possibility of a short-circuit in the vacuum device is reduced.

REFERENCES:
patent: 3719433 (1973-03-01), Rabusin
patent: 3996488 (1976-12-01), Zucchinelli
patent: 5508586 (1996-04-01), Martelli et al.

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