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. 09, 1989
Filed:
Aug. 18, 1987
Gerd H Bauer, Wattenheim, DE;
Gunter Feldle, Achim, DE;
Herbert Hartmuller, Ludwigshafen, DE;
Ernst Luhn, Heuchelheim, DE;
Alexander Nicklas, Dirmstein, DE;
Oliver Schuster, Bobstadt, DE;
Klein, Schanzlin & Becker Aktiengesellschaft, Frankenthal/Pfalz, DE;
Abstract
A casing which admits the fluid medium into the range of the impeller or first impeller in a fluid flow machine, particularly in a centrifugal pump, is made of several sections which have abutting surfaces. At least one such surface has a recess forming part of a fluid flow passage, and the recess is machined into the respective surface by a material removing tool. This simplifies the making of the casing and enables the latter to optimally conform to the conditions of flow between the supply conduit and the impeller or first impeller of the machine to thus reduce noise and stray movements and enhance the efficiency of the machine.