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. 25, 2004
Filed:
Jun. 11, 2002
Applicant:
Inventor:
Marvin P. Schneider, East Peoria, IL (US);
Assignee:
Caterpillar Inc, Peoria, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D 2/942 ;
U.S. Cl.
CPC ...
F04D 2/942 ;
Abstract
A pump includes a pump housing having an impeller recess therein and a pump outlet and an impeller disposed in the impeller recess. First and second separate volute passages are disposed in the pump housing and are further disposed in fluid communication between the impeller recess and the pump outlet. Motive power and fluid are supplied to the impeller recess, thereby inducing fluid flow therein. The fluid flow is divided into the separate volute passages and the divided flow is recombined in a convergence passage before exiting the pump outlet.