Cathode ray tube having enhanced electron beam deflection efficiency
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 25, 2003
Grant Date -
N/A
app pub date -
Nov 16, 1999
filing date -
Nov 16, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cathode ray tube with a central axis includes a panel with an inner phosphor screen and a rear portion. A funnel is connected to the rear portion of the panel. The funnel sequentially has a body with a large-sized end and a small-sized end, and a cone portion with a large-sized end and a small-sized end. The large-sized end of the body is sealed to the rear portion of the panel. The small-sized end of the body meets the large-sized end of the cone portion at a point. The meeting point of the body and the cone portion becomes an inflection point of the funnel. The cone portion has a sectional shape varying from a circle to a non-circle like a rectangle while proceeding from the small sized end to the large sized end such that the cone portion is provided with a curvature radius Rh in the horizontal axis direction, a curvature radius Rv in the vertical axis direction, and a curvature radius Rd in the diagonal axis direction. The horizontal, vertical and diagonal curvature radii Rh, Rv and Rd of the cone portion of the funnel satisfy the following condition: Rh
Recipient Email Address Recipient Email Address Comment Recipient Email Address To add this patent to one, or more, of
your portfolios, simply click the add button. This Patent is in these Portfolios: Add to additional portfolios: Last Refreshed On:
Changes done successfully
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Add to Portfolio(s)
