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:
Jul. 22, 1980
Filed:
Oct. 17, 1977
Applicant:
Inventor:
Terry L Henshaw, Battle Creek, MI (US);
Assignee:
Union Pump Company, Battle Creek, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03B / ;
U.S. Cl.
CPC ...
417206 ; 417219 ;
Abstract
The specification discloses a centrifugal pump in which radial thrust on the impeller shaft is reduced by employing a modified volute casing in which the casing flow area downstream from the cutwater to a point generally opposite the cutwater is significantly greater than would be the flow area of a true volute casing, the area at a point generally opposite the cutwater being significantly less than the flow area of a true volute casing and the area just upstream of the throat back towards the point opposite the cutwater being significantly greater than would be the flow area of a true volute casing.