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:
May. 02, 1978
Filed:
Feb. 15, 1977
Applicant:
Inventor:
Ray Brown Duggins, Chadds Ford, PA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02B / ; F16D / ;
U.S. Cl.
CPC ...
61 13 ; 1375133 ; 138 45 ; 239145 ; 239542 ;
Abstract
A drip irrigation system is disclosed wherein individual drip irrigation tubes are fed from a header by means of a flow controller which feeds water to the irrigation tube at an essentially uniform rate over a wide variety of pressures in the header. Generally the flow controller will be capable of maintaining the flow therethrough within .+-. 15% of a predetermined value within a pressure variation of from 3 to 60 psi.