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:
Aug. 25, 1992
Filed:
May. 29, 1990
Walter D Haentjens, Sugarloaf, PA (US);
Other;
Abstract
A vertical-axis cantilevered-shaft centrifugal pump having an impeller within a pump casing, an intake end in fluid communication with a fluid supply, and a dischage end, in which is provided an integral by-pass. The pump is operated at a speed representing a relatively high level of pump efficiency to produce a relatively stable fluid flow from the fluid supply through the casing. The first portion of the fluid flow from the casing is directed through the discharge end of the pump, while a second portion of the fluid flow is diverted from the casing back to the fluid supply. The second diverted portion may be returned to the supply through a plurality of outlets located on volutes of the pump casing. The discharge from the pump can be controlled using a variable control valve adjacent the discharge end of the pump.