The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 1978
Filed:
Feb. 26, 1976
Walter Schmidt, Schaffhausen, CH;
Walter Stahlin, Schaffhausen, CH;
Prolizenz AG., Chur, CH;
Abstract
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.