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:
Feb. 06, 1996
Filed:
Sep. 21, 1994
Applicant:
Inventors:
Klaus Domagalla, Nutteln, DE;
Siegfried Auschrat, Heiligenstedten, DE;
Assignee:
SIHI GmbH & Co KG, Itzehoe, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04C / ; F04B / ;
U.S. Cl.
CPC ...
417 68 ; 417D / ; 29890132 ;
Abstract
Liquid-ring gas pump with a working chamber in which an impeller (6) rotates and which is bounded axially by a control plate (7) past which the impeller (6) moves with a small clearance and which has at least one intake and/or discharge opening (21, 22, 23) and is composed of rolled sheet. According to the invention, the edges (26) of the intake and discharge openings are at least in part bent over towards the side facing away from the impeller (6) and are rounded on the side facing the impeller and raised on the side facing away from it.