Electron tube with electrode centering arrangement

Details Electron tube with electrode centering arrangement Electron tube with electrode centering arrangement

1989-01-30

1992-09-22

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313456, 313286, H01J 1948

Patent

active

051500027

ABSTRACT:
In an electron tube having a glass envelope portion (1) is an electrode system (3) which is slid in the envelope portion (1) and is centered with respect to the wall (7) of the envelope portion (1) by means of a number of pretensioned springs (6). The springs (6) each extend from a supporting point B, which is fixed with respect to the electrode system (3), over their effective spring length toward the wall (7) of the envelope portion (1) and press against the wall (7) at a contact point A. A stick-slip movement of the springs over the surface of the wall (7) during the sliding movement of the electrode system (3) is avoided because the springs (6) each extend over their effective spring length along a straight line between supporting point B and contact point A. Flowing of the springs and the resulting occurrence of glass damage to the wall (7) is minimized by this spring configuration.

REFERENCES:
patent: 2828433 (1958-03-01), Frenkel
patent: 2991390 (1961-07-01), Shrader
patent: 4196371 (1980-04-01), McGrath
patent: 4368403 (1983-01-01), Lewis

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