Metal working – Method of mechanical manufacture – Electrical device making
Patent
1978-07-05
1980-03-11
Husar, Francis S.
Metal working
Method of mechanical manufacture
Electrical device making
264 23, 264 86, 264 62, 264129, H01B 1900
Patent
active
041920643
ABSTRACT:
A high strength and serrated edge extended leakage path ceramic tube wall r high voltage tube device, such as a proximity focused image intensifier, and method of making same. The ceramic may be comprised of a ceramic particle slurry made of high density alumina in a glass binder wherein the slurry is ultrasonically compacted against ultrasmooth mold walls in the uncured state. The mold may be formed by using a highly polished preshaped, positive, made of a metal such as brass, and then removing the positive. The mold may be further processed by electrodepositing a metal, such as nickel or nickel alloys, onto the positive to produce an ultrasmooth surface. The mold may be made of a vinyl polymer type thermoplastic. The inside of the mold takes up the smooth surface characteristics of the positive that is, in turn, transferred to the uncured ceramic when sufficiently pressed and compacted by the ultrasonically compacting step. The uncured ceramic is then pre-baked at about 350.degree. C. for some time to produce a green ceramic at which time the mold is removed from the green ceramic. The green ceramic may have milled sections produced therein. After the sections are milled, the green ceramic is fired in the temperature range of 1600.degree.-1800.degree. C for about 15 hours to cure.
REFERENCES:
patent: 1628417 (1927-05-01), Miller
patent: 2182185 (1939-12-01), Trump
patent: 2390354 (1945-12-01), Clapp
patent: 2515017 (1950-07-01), Nicholson
patent: 3074143 (1963-01-01), Smith
patent: 3234308 (1966-02-01), Herrmann
patent: 3355614 (1967-11-01), Geiger et al.
patent: 3988405 (1976-10-01), Smith et al.
Arbes C. J.
Edelberg Nathan
Gibson Robert P.
Harwell Max L.
Husar Francis S.
LandOfFree
High strength extended leakage path ceramic tube wall for image does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High strength extended leakage path ceramic tube wall for image , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High strength extended leakage path ceramic tube wall for image will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1995011