Method of constructing an electron gun having an improved transi

Details Method of constructing an electron gun having an improved transi Method of constructing an electron gun having an improved transi

1986-03-26

1987-01-20

Godici, Nicholas P.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 35, 228170, H01J 912

Patent

active

046378049

ABSTRACT:
An electron gun comprises, as in prior guns, a plurality of metal gun elements, held in position from a common ceramic member. A novel transition member is brazed to the common ceramic member. The transition member has a contact portion and a removable frame portion. The transition member is a bimetal comprising two layers of metal bonded face-to-face along an interface extending therebetween. A first layer of metal has a melting point higher than that of a second layer of metal.
The novel transition member is provided with a V-notched weakened bridge region extending through the first layer of metal and terminating at the interface with the second layer of metal having the lower melting point. The frame portion of the transition member is removed from the contact portion at the V-notched bridge region when the transition member is brazed to the common ceramic member and the second layer of metal melts. The contact portion has a substantially smooth edge following removal of the frame portion.

REFERENCES:
patent: 3569797 (1969-03-01), Simmons
patent: 3571920 (1971-03-01), Berg
patent: 4331740 (1982-05-01), Burns
patent: 4370215 (1983-01-01), Frudd
U.S. patent application Ser. No. 735,261, filed on May 17, 1985, by H. E. McCandless, titled Multibeam Electron Gun Having a Transition Member and Method for Assembling the Electron Gun.
U.S. patent application Ser. No. 769,970, filed on Aug. 27, 1985, by S. T. Opresko, titled Multibeam Electron Gun Having Means for Supporting a Screen Grid Electrode Relative to a Main Focusing Lens.
U.S. patent application Ser. No. 769,978, filed on Aug. 27, 1985, by A. K. Wright, titled Multibeam Electron Gun Having Means for Positioning a Screen Grid Electrode.

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