Title: Color television picture tubes with improved implosion protection system

Abstract: This disclosure depicts a novel facebond system for implosion protecting a rectangular, shadow mask type color television picture tube having a flangeless faceplate with a central viewing area and a relatively wide peripheral non-viewing area. The facebond system is illustrated as comprising, in its most general sense, a metal high tensile strength frame having a curvature similar to the curvature of the faceplate and having substantially the same rectangular shape and size of the faceplate. The frame has a substantially rectangular central window slightly larger than the viewing area of the faceplate and is bonded to the non-viewing area of the faceplate so as to environ the viewing area thereof. The system assists in retaining in position the shards of a shattered faceplate and thereby provides for a relatively gradual buildup of pressure in the tube.

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Inventors: Palac, Kazimir (Carpentersville, IL, US)

Application Number: 632559
Filing Date: 1975-11-17
Publication_date: 1977-03-15
Assignee: Zenith Radio Corporation (Chicago, IL)
Primary Class(es): 348/821
Other Classes:
US Patent Ref:

3200188	Aug, 1965	Lange et al.	178/7.
3340358	Sep, 1967	Gier et al.	178/7.
3835250	Sep, 1974	Kaljuko et al.	178/7.

Other Refs:
Primary Examiner: Griffin, Robert L.
Assistant Examiner: Psitos, Aristotelis M.
Attorney: Garrett; John R.