Traveling wave tube with expanding resilient support elements

Details Traveling wave tube with expanding resilient support elements Traveling wave tube with expanding resilient support elements

1995-08-23

1999-09-28

Lee, Benny T.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Combined cathode ray tube and circuit element structure

315 535, 29600, 296021, H01J 2534, H01J 23087

Patent

active

059594063

ABSTRACT:
A coupled cavity traveling tube employs a number of adjacent stacked annular magnetic coils (52a-52l) of insulated copper tape mounted on a housing (40) that contains an electron beam path (22) surrounded by a coupled cavity circuit (42,44). An electron beam that is focused by the annular magnetic coils is projected by an electron gun (10) at one end of the traveling wave tube to a collector (26) at the other end of the electron beam path. RF input and output ports (48,50) are coupled to opposite ends of the coupled cavity circuit, with the entire assembly mounted in an outermost device housing (12,28,36) that is sealed to and around the externally projecting RF input and output ports by a pair of sealing rings (60,62) that circumscribe coils (52b,52c,52l) at opposite ends of the traveling wave tube. Hot melt plastic (58a-58i) is injected into spaces between adjacent ones of the annular coils to firmly position the stack of coils against shock and vibration. Expandable support elements (80,82) are positioned in intercoil spaces that are inaccessible because of the sealing rings. The expandable support elements respond to flowing cooling oil by expanding to resiliently urge the coils that they contact in axial directions, thereby exerting axially directed resilient compressive forces on the entire stack of coils to stabilize their position and resist shock and vibration to which the traveling wave tube may be subjected.

REFERENCES:
patent: 2746775 (1956-05-01), Leonard
patent: 3292239 (1966-12-01), Sadler
patent: 3384160 (1968-05-01), Buertheret
patent: 3866085 (1975-02-01), James

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