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. 16, 2002
Filed:
Jun. 12, 2000
Jorg Dantlgraber, Bunderepublik, DE;
Mannesmann Rexroth AG, Lohr/Main, DE;
Abstract
The present invention relates to a drive mechanism for a pump ( ) implemented by means of a drive motor ( ), the rotational speed and torque of which are influenced by a frequency converter ( ). The frequency converter ( ) is arranged on a heat dissipator ( ) confining a flow of the pressure liquid guided to the pump ( ). It is advantageous to also arrange the drive motor ( ) inside the said heat dissipator ( ), for this makes it possible to perform intense forced air cooling of a pump-drive motor system without the necessity of an additional cooling liquid. The drive motor ( ) preferably has a central arrangement inside a tubular heat dissipator and is exposed to the pressure liquid over its entire circumference. Baffles or offset connecting sleeves allow for uniform flow through the entire heat dissipator ( ).