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

Drip irrigation system employing flow regulation

Patent 4473191 Issued on September 25, 1984. Estimated Expiration Date: Icon_subject April 1, 2002. 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

Re28095

2798768

3361359

3426544

3467142

3672571

3777987

3866833

3870236

3874598

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Inventor

Application

No. 06/364213 filed on 04/01/1982

US Classes:

239/542CONDUIT OR NOZZLE ATTACHED IRRIGATION-TYPE DECELERATOR

Examiners

Primary: Love, John J.
Assistant: McCarthy, Mary F.

Attorney, Agent or Firm

International Classes

B29C 53/00 (20060101)
B29C 53/48 (20060101)
A01G 25/02 (20060101)
B05D 1/26 (20060101)
B05D 5/00 (20060101)

Abstract

An elongated fluid distributing hose for use in an irrigation system for plants, vegetables, and the like. The hose incorporates a particular arrangement of a main supply channel for gross water movement, and a water distributing network for fine water movement. Water pressure reduction takes place in the water distributing network at the point of the passing of the water from the high pressure main supply channel through a series of first fluid-passing openings or inlet stations through one or more smaller fluid-restricting passages. In certain embodiments, a structure is provided to perform a pressure regulating function in each of the smaller passages. In one embodiment, pressure reduction between an inlet and an outlet is by way of serpentine fluid-restricting path. A novel method and machine are employed to manufacture the various hoses embodying the teachings of the subject invention.

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