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:
Dec. 03, 1996
Filed:
Apr. 12, 1995
James M Edwards, Kinston, NC (US);
John E Dries, Goldsboro, NC (US);
White Consolidated Industries, Inc., Cleveland, OH (US);
Abstract
A filter screen assembly is provided which includes a housing, a filter screen, and two valve or check balls. The housing has two interior walls, each having openings therein which divide an interior space of the housing into top, center, and bottom chambers. A first inlet and a first outlet open into the top chamber and a second inlet and a second outlet open into the bottom chamber. The filter screen is horizontally disposed within the center chamber. One check ball is located in the top chamber and is biased to close the first inlet by a bottom inclined surface of the top chamber. The check ball is forced to substantially close the first outlet when fluid flows in the first inlet. The other check ball is located in the bottom chamber and is biased to close the second inlet by a bottom inclined surface of the bottom chamber. The check ball is forced to substantially close the second outlet when fluid flows in the second inlet. The filter screen thereby filters fluid entering the first inlet and exiting the second outlet and is automatically cleaned or backflushed by fluid entering the second inlet and exiting the first outlet.