Shielding means for television picture tube electrical _feed-thr

Details Shielding means for television picture tube electrical _feed-thr Shielding means for television picture tube electrical _feed-thr

1978-07-24

1980-03-04

Murray, Richard

Facsimile and static presentation processing

Facsimile

Recording apparatus

313477R, 313479, H04N 565

Patent

active

041919734

ABSTRACT:
A television cathode ray picture tube having a glass envelope including a funnel and a faceplate generates X-radiation internally and incidental to its operation. The funnel has a wall in which is sealingly embedded open-side-out a cup-like high-voltage receptacle having an inwardly turning annular lip for detachably engaging a mating high voltage electrical connector. An improved means for enhancing the X-radiation-inhibiting characteristics of the receptacle is depicted. The improved means comprises a cover of radiation-resistant material retained against the annular lip effective to close the opening of said receptacle whereby the shielding characteristics of the receptacle are enhanced by the cover.

REFERENCES:
patent: 2499834 (1950-03-01), Phelps
patent: 3600620 (1971-08-01), Warren et al.

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