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:
Dec. 11, 2001
Filed:
Jun. 09, 2000
Applicant:
Inventors:
Heiner Kösters, Itzehoe, DE;
Guido Keller, Hagen, DE;
Assignee:
Sterling Fluid Systems (Germany) GmbH, Itzehoe, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 3/906 ;
U.S. Cl.
CPC ...
F04B 3/906 ;
Abstract
The rotary piston machine with an axial direction of delivery from the top downwards, in particular of screw spindle-type construction, with cooling ducts (,) for the motors (,), bearings (,) and sensors (,), through which ducts a cooling fluid flows, and with a cooling device for the pump space (,) is characterized in that the casing (,) of the pump space (,) has a closed annular space (,) which is partially filled with a liquid, which is cooled by the cooling fluid via heat exchanger surfaces (,).