Pipes and tubular conduits – Combined – With end structure
Patent
1982-07-30
1985-07-23
Bryant, III, James E.
Pipes and tubular conduits
Combined
With end structure
138155, 138177, 138178, 428 36, 65DIG9, 65DIG8, 285DIG12, F16L 922
Patent
active
045303789
ABSTRACT:
Tubular body of fused quartz and quartz glass with a seamless transition from the fused-quartz zone to the quartz-glass zone. The body is manufactured continuously in a hollow rotating metal cylinder by disposing silica against the rotating mold and adding thereto, such as in an annular zone therein, rock crystal or synthetic silicon dioxide and fusing the rock crystal or synthetic silicon dioxide to the fused silica whereby no seam is formed.
REFERENCES:
patent: 2149133 (1939-02-01), Cohn
patent: 3362435 (1968-01-01), Meyer
patent: 3544281 (1970-12-01), Phillips
patent: 3882901 (1975-05-01), Seiler et al.
patent: 3927697 (1975-12-01), Baumler et al.
Heraeus Quarzschmelze Q-B 3/113 "Quarzglas fur die Halbleitertechnik" (Quartz Glass for the Semi-Conductor Technology (West Germany)-1979.
Boog Manfred
Jakob Werner
Bryant III James E.
Heraeus Quarzschmelze GmbH
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