U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Turbulent flow emitter

Patent 4460129 Issued on July 17, 1984. Estimated Expiration Date: Icon_subject July 17, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3806031

Dialyzer casing
Patent #: 4159250
Issued on: 06/26/1979
Inventor: Schnell

Current matrix for encoding television video signals
Patent #: 4167751
Issued on: 09/11/1979
Inventor: Wilcox

Drip level irrigation Patent #: 4215822
Issued on: 08/05/1980
Inventor: Mehoudar

Inventor

Application

No. 06/251218 filed on 04/06/1981

US Classes:

239/542, CONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATOR138/42Tortuous path

Examiners

Primary: Love, John J.
Assistant: Sobel, Paul A.

Attorney, Agent or Firm

International Class

A01G 25/02 (20060101)

Abstract

A drip irrigation emitter where turbulent flow and angled ribs in a tortuous channel reduce fluid pressure, providing for minimal variations in outlet flow rate from the emitter, irrespective of emitter inlet pressure.

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