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. 06, 1994
Filed:
Sep. 28, 1992
Daniel R Roll, Seneca Falls, NY (US);
George Wilson, Skaneateles, NY (US);
Goulds Pumps, Incorporated, Seneca Falls, NY (US);
Abstract
A dynamic shaft seal for a fluid handling apparatus for pumping fibrous slurries, the fluid handling apparatus comprising an impeller mounted on a rotating shaft disposed in a pump housing, the shaft extending through an aperture extending from the pump housing into an impeller casing forming part of the pump housing. Prime mover means rotate the shaft. A slurry of a dispersed fibrous material in a fluid is disposed in the impeller casing, and a repeller chamber is formed in the pump housing in proximity to the aperture and in communication with the impeller casing. A repeller attached for rotation with the shaft extends into the repeller chamber to force a portion of the fluid in the impeller casing to move in a vortex in a direction away from the aperture. The invention includes means associated with the repeller to apply shear forces to the fluid vortex, and create circulatory flow within the vortex to maintain the dispersion of the fibrous material in the slurry.