Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1977-12-05
1980-06-10
Scovronek, Joseph
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
23301, 156601, 156617SP, 250571, 250572, 250574, 356385, 356386, B01D 900, B01J 1718, G01N 2148
Patent
active
042072930
ABSTRACT:
The circumference of a crystal rod is monitored and controlled during the rod growing process by providing relative rotation between the growing crystal rod and a melt of the crystal material as the rod is being pulled from the melt according to the Czochralski method, and by using a radiation-sensitive control system for adjusting growth conditions of the rod in response to variations in a radiation signal which is indicative of the circumferential dimension of the rod. An electronic circuit integrates the radiation signal over each complete rotation of the rod, thereby eliminating unnecessary adjustment of the growth conditions in response to diametric variations of the rod which recur regularly in each rotation.
REFERENCES:
patent: 3291650 (1966-12-01), Dohmen
patent: 3621213 (1971-11-01), Jen
patent: 3692499 (1972-09-01), Andrychuk
patent: 3740563 (1973-06-01), Reichard
patent: 3998598 (1976-12-01), Bonora
Cole John L.
Scholl Richard A.
Berkowitz Edward H.
Cole Stanley Z.
Garris Bradley
Scovronek Joseph
Varian Associates Inc.
LandOfFree
Circumferential error signal apparatus for crystal rod pulling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circumferential error signal apparatus for crystal rod pulling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circumferential error signal apparatus for crystal rod pulling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-862661