Prolizenz Ag

Walter Stahlin

Walter Schmidt

Tibor Kugler

Franz Sperner

Werner J Borer

A crucible, especially for containing melts, has multi-layered walls with an inner core of heat resistant material. A continuous coating layer of temperature resistant material is supported on the core. The coating layer at least partially defines a reservoir for melts to be contained in the crucible, and is composed of material resistant to attack by hot melts.

Crucible

A weighing device for the automatic regulation of a crystal-growing operation includes an upright shaft on which a crucible for a crystal melt is supported. The shaft is journalled for rotation and has limited freedom of movement in downward direction under the weight of the crucible and the melt therein. Weight-responsive signal-generating devices are engaged by the shaft or components associated therewith, so that pressure is exerted upon these devices to different degrees, in dependence upon the weight of the melt in the crucible. These devices produce signals as a function of the weight acting upon them, and these signals in turn control the crystal-growing operation. The shaft is rotatable by a drive arrangement which does not require physical contact with the shaft to rotate the same.

A crucible, especially for containing melts, has a multichamber construction wherein there is an outer chamber for containing a heat distribution medium and an inner chamber which acts as a receptacle for the melt.

A crucible, for use in heating and/or retaining melts at elevated temperatures, includes a hollow holding member composed of a heat resistant material, and a thin-walled insert composed of a substance chemically resistant to oxygen and oxidizing substances and being removably supported in the holding member.

Growing community of inventors

Schaffhausen, Switzerland

Walter Stahlin