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:
Apr. 02, 1985
Filed:
Dec. 13, 1983
Detlef Vandamme, Berlin, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A drive for a slow-running annular rotor of a processing machine includes a rotor supported on a standing tubular body by two bearings, between which the the electric motor driving the annular rotor is fastened to the annular rotor. The stator of the electric motor is disposed on and is likewise supported by the tubular body. The electric motor is of encapsulated design, and a gaseous coolant required for cooling the motor is conducted by forced circulation in a closed cooling loop which includes a heat exchanger disposed in the interior of the tubular body. The heat exchanger is designed as an air/air cooler. Such a drive is particularly suitable for bucket wheels of large-volume baggers employed for example in dusty areas lacking cooling water, for lignite strip mining.