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. 30, 1994
Filed:
Jul. 12, 1993
Applicant:
Inventor:
Douglas L Young, Nashua, NH (US);
Assignee:
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B03B / ; B07B / ;
U.S. Cl.
CPC ...
209 17 ; 209270 ;
Abstract
A hydrofoil in close proximity to an outboard surface of a rotatable slurry screen, and a hydrofoil in close proximity to an inboard surface of the screen, cooperate to create high and low slurry pressures at the surfaces which result in causing the slurry to surge through the screen to backwash the latter, thereby dislodging slurry-borne substances which tend to clog apertures in the screen.