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:
Nov. 17, 2009
Filed:
May. 09, 2007
Applicants:
Dieter Mosemann, Schildow, DE;
Dmytro Zaytsev, Berlin, DE;
Ottomar Neuwirth, Berlin, DE;
Inventors:
Assignee:
Grasso GmbH Refrigeration Technology, Berlin, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 1/16 (2006.01); F03C 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to oil-flooded screw compressors having a male rotor and female rotor each featuring preferably a ratio of male-to-female rotor lobes of 4:6, 5:6 or 5:7. In order to decrease the bearing load at higher working pressures, the profile sections of the rotors are shortened, and an intermediate plate is appropriately arranged in the free space formed.