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:
Jul. 25, 2000
Filed:
Jul. 11, 1997
Voith Turbo GmbH & Co. KG, Heidenheim, DE;
Abstract
A deep drilling or deep well pump system includes a driving motor, a driven component connected to the driving motor, and a hydrodynamic retarder. The hydrodynamic retarder includes a rotor and stator blade wheel. The rotor blade wheel and the stator blade wheel together form a toroidal working space continuously filled with a working medium during operation of the deep drilling device or the deep well pump device. The rotor blade wheel is continuously connected at least indirectly to the driving motor. The blading of the rotor and stator blade wheel is designed so that, owing to the blade direction in the drive mode, the rotor blade wheel revolves freely. During the occurrence of restoring forces on the driven components, the retarder operates in a braking manner.