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:
Aug. 14, 2012
Filed:
Sep. 25, 2009
Sumit Singhal, Cincinnati, OH (US);
Sumit Singhal, Cincinnati, OH (US);
Siemens Industry, Inc., Alpharetta, GA (US);
Abstract
A lubrication system for an electrodynamic machine including therein an internal oil sump and at least one oil ring hydrodynamic bearing, wherein the oil ring is in fluid communication with oil, in the sump and replenishes oil in the bearing. The lubrication system includes an electrically powered oil sump pump that is oriented within the sump. An of intake is coupled to the pump and is in fluid communication with oil in the internal sump. An oil discharge line is coupled to the pump discharge. The distal end of the discharge line is oriented proximal the motor bearing, so that oil discharged therefrom replenishes oil in the bearing and shaft journal interface. The lubrication system oil discharge parameters are independent, of the motor speed, load or physical orientation, and may be varied by a controller coupled to the oil sump pump.