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:
Sep. 29, 1998
Filed:
Aug. 29, 1996
Graeme R Addie, Augusta, GA (US);
Robert J Visintainer, Augusta, GA (US);
GIW Industries, Inc., Grovetown, GA (US);
Abstract
A centrifugal slurry pump is disclosed which includes a specifically designed impeller having three circumferentially spaced vanes mounted between a back disc shaped shroud and a front open annular shroud. The vanes are thick in cross-section for wear-resistance and channels formed between adjacent ones of the vanes permit a relatively large sphere, or sphere-like objects, to pass therethrough, the sphere having a diameter of in excess of 14 inches, while maintaining an efficiency in excess of 80% and a head in excess of 30 feet. The vanes have a mixed pitch and a negative overlap, with quite large channels formed between adjacent vanes so as to pass the large spheres which are encountered during dredging operations.