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:
May. 26, 1992
Filed:
Sep. 07, 1990
Applicant:
Inventors:
Reijo Vesala, Kotka, FI;
Vesa Vikman, Kymi, FI;
Assignee:
Ahlstrom Corporation, Noormarkku, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
4151691 ; 415143 ;
Abstract
A centrifugal pump for pumping gas containing fiber suspensions includes a centrifugal pumping chamber (54); a centrifugal impeller (60) rotatably mounted within the pumping chamber (54); a liquid ring vacuum pump with a vacuum pump chamber (76) adjacent the centrifugal pumping chamber which includes a radially vaned vacuum pump rotor (96) mounted for rotation therein; an intermediate wall (72) separating the centrifugal pumping chamber from the liquid ring vacuum pump; and a gas inlet (94) and gas outlet (80) within the intermediate wall on the same side of the liquid-ring pump.