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. 29, 2017
Filed:
Jun. 30, 2009
Rick Mavrakis, Alta Loma, CA (US);
Brian Pope, Azusa, CA (US);
Samir Shah, Chino Hills, CA (US);
Christopher Leland O'neal, Temple City, CA (US);
David Leybourn, Claremont, CA (US);
Rick Mavrakis, Alta Loma, CA (US);
Brian Pope, Azusa, CA (US);
Samir Shah, Chino Hills, CA (US);
Christopher Leland O'Neal, Temple City, CA (US);
David Leybourn, Claremont, CA (US);
Rain Bird Corporation, Azusa, CA (US);
Abstract
A drip emitter is provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. Water enters the emitter through a first inlet and proceeds into a first chamber. When the water pressure is above a predetermined level, a one-directional valve opens to allow fluid flow past the first chamber, through a tortuous path flow channel, and through an emitter outlet. A second inlet is used to compensate for water pressure fluctuations in the supply tube to maintain output flow at a relatively constant rate. Water enters the second inlet and presses a flexible diaphragm toward a water metering surface to provide pressure-dependent control of the output flow. A copper member is mounted to the emitter over the emitter outlet to prevent plant root intrusion into the emitter outlet.