CRT with thermally-set nitinol getter spring

Details CRT with thermally-set nitinol getter spring CRT with thermally-set nitinol getter spring

1975-08-28

1977-02-01

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Envelope

313405, H01J 3100, H01J 2984

Patent

active

040063810

ABSTRACT:
A cathode-ray tube comprises a getter container supported on a metal spring which is attached to and extends from the electron-gun mount assembly. At least a portion of the spring consists of an alloy, such as 55-nitinol (an alloy of nickel and titanium), which can be thermally set to a first shape, then cold formed to a second shape, and then restores itself to the first shape upon being heated above a predetermined transition temperature. The method includes providing a spring which has been thermally set and then cold formed, attaching the container to the spring and the spring to the mount assembly, sealing the container and the mount assembly in the tube, and then heating the spring above the predetermined transition temperature.

REFERENCES:
patent: 2598241 (1952-05-01), Elenbaas et al.
patent: 3174851 (1965-03-01), Buehler et al.
patent: 3634717 (1972-01-01), Boucher et al.
patent: 3711734 (1973-01-01), Yamazaki et al.

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