Cathode-ray tube with a reinforcing band

Details Cathode-ray tube with a reinforcing band Cathode-ray tube with a reinforcing band

2005-07-26

2005-07-26

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C313S479000, C313S408000, C313S482000, C220S00210A, C220S00230A, C348S821000, C348S822000, C348S836000

Reexamination Certificate

active

06922012

ABSTRACT:
A panel (2) of a vacuum envelope includes a substantially rectangular effective portion (8) having a substantially flat outer surface and also having a phosphor screen1formed on an inner surface, and a skirt portion (9) provided along a peripheral part of the effective portion and extended substantially perpendicularly to the effective portion. A funnel (3) is bonded to the skirt portion. A reinforcing band for fastening the skirt portion is attached round an outer surface of the skirt portion. When a distance in a direction of the tube axis from a bonding part between the panel and the funnel to an end of the reinforcing band on the outer surface side of the effective portion is represented byaand a distance in the direction of the tube axis from the bonding part to a central position of the outer surface of the effective portion is represented byh, the reinforcing band is arranged to satisfy a ≧0.9h.

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