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:
Apr. 01, 1986
Filed:
Nov. 03, 1983
Allison W Eades, Willingboro, NJ (US);
Mark J Bogdan, Levittown, PA (US);
Indreco U.S.A., Ltd., Philadelphia, PA (US);
Abstract
A preferred form of the invention contemplates a two-piece nozzle construction for use in assembled relation to the tube sheet of an underdrain filter system, wherein each of two nozzle halves is assembled to a tube-sheet opening, solely by access from the downstream side of the tube sheet, and with each of the two halves holding the other in the thus-assembled relationship; in the assembled relationship, the closed upstream end of the upstream half extends a substantial distance into lower bed material of the filter, with flow access to the nozzle via a distributed plurality of relatively small openings in the cylindrical body wall of the upstream half. The downstream half is open at both ends and, in assembled condition, extends downward from the tube sheet; this downstream half has side ports to assure uniform air flow up through the filter bed, in a backwash mode of the filter system.