CRT funnel with positioning reference portions

Details CRT funnel with positioning reference portions CRT funnel with positioning reference portions

2006-08-22

2006-08-22

Patel, Ashok (Department: 2879)

Receptacles

Envelope for electric lamp or similar device

Tv tube

C313S47700R

Reexamination Certificate

active

07093732

ABSTRACT:
Upper end edges (7a, 7b, 7c) of positioning reference portions (5a, 5b, 5c) to be formed on outer walls of a funnel (1) for cathode ray tube are formed at distances (downwardly) toward a narrow open end (3) of the funnel from a maximum profile line (4) formed in the vicinity of a wide open end (2) by mold matching of forming mold at the time of press molding, thereby suppressing molding defects such as deficiency and wrinkle resulting from that glass is not completely filled, which are likely to occur in reference surfaces (6a, 6b, 6c) of the positioning reference portions, and eliminating occurrences of small cracks caused by concentration of heat stress, which are likely to occur in the upper end edges (7a, 7b, 7c) of the reference portions, to improve the productivity of the funnel.

REFERENCES:
patent: 5865884 (1999-02-01), Segawa et al.
patent: 6427490 (2002-08-01), Bordt et al.
patent: 298 04 371 (1998-07-01), None
patent: 43-18122 (1968-07-01), None
patent: 51-3326 (1976-02-01), None
patent: 53-82793 (1978-06-01), None
patent: 5-131864 (1979-10-01), None
patent: 54-131864 (1979-10-01), None
patent: 55-35426 (1980-03-01), None
patent: 55-50528 (1980-04-01), None
patent: 60-33746 (1985-03-01), None
patent: 63-10447 (1988-01-01), None
patent: 01-239730 (1989-09-01), None
patent: 4-21238 (1992-05-01), None
patent: 07-037529 (1995-02-01), None
patent: 8-111189 (1996-04-01), None
patent: 9-245646 (1997-09-01), None
patent: 10-340687 (1998-12-01), None

Affiliated with

Also associated with

Rating

CRT funnel with positioning reference portions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with CRT funnel with positioning reference portions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CRT funnel with positioning reference portions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3703201