Michael J Polak

US Patent:

42696160, May 26, 1981

Filed:

Aug 13, 1980

Appl. No.:

6/177576

Inventors:

Emil V. Fitzke - Trenton NJ
Donald B. Wenner - Hopewell NJ
Michael J. Polak - Trenton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

B01D 4610
H01J 938

US Classification:

55493

Abstract:

A filter for preventing the infiltration of contaminants into a kinescope envelope, includes a ring having a sloped surface to conform with the conical section of the kinescope neck. The ring also includes a support portion to which is affixed a non-oxidizable fluid permeative member. The ring is configured and dimensioned to rest against the inside surface of the conical neck section through a temperature range of approximately 20. degree. C. to 500. degree. C. so that fluid enters the envelope only through the permeative member. Specially configured clips remain resilient throughout the 20. degree. C. to 500. degree. C. temperature range to hold the filter in the conical section.