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:
Jul. 26, 1977
Filed:
Oct. 17, 1975
Applicant:
Inventors:
Leslie Fred Mullett, Victor Harbour, AU;
Alan James Brock, North Adelaide, AU;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
239542 ; 239547 ; 138 45 ;
Abstract
A pressure compensated emitter device for controlling rate of water discharge in a drip irrigation emitter tube, wherein the tube is of resilient material and is partly contained within a plenum, wherein an increase pressure results in a reduction of tube diameter. The tube may contain a core of copper or other metal which will inhibit root growth in the vicinity of the discharge orifice.