Individually controlled nozzle valve system for application of liquid fertilizer/chemicals

Patent 5772114 Issued on June 30, 1998. Estimated Expiration Date:

May 9, 2016. 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.

Abstract Claims Description Full Text

Patent References

Hydrostatic spraying system
Patent #: 4260107
Issued on: 04/07/1981
Inventor: Jackson

Spray bar assembly
Patent #: 4738400
Issued on: 04/19/1988
Inventor: Irwin

Vehicle-mounted spray apparatus
Patent #: 4817870
Issued on: 04/04/1989
Inventor: Dalton

Asphalt distributor
Patent #: 4960242
Issued on: 10/02/1990
Inventor: Larson

Irrigation system
Patent #: 5048755
Issued on: 09/17/1991
Inventor: Dodds

Maintenance control apparatus for lawn watering system
Patent #: 5154349
Issued on: 10/13/1992
Inventor: Vaughn

Method and apparatus for variable application of irrigation water and chemicals
Patent #: 5246164
Issued on: 09/21/1993
Inventor: McCann, et al.

Wireless irrigation system
Patent #: 5333785
Issued on: 08/02/1994
Inventor: Dodds, et al.

Spray control system for multiple segment boom sprayers Patent #: 5337959
Issued on: 08/16/1994
Inventor: Boyd

Inventor

Hunter, Paul

Application

No. 647204 filed on 05/09/1996

US Classes:

239/67, WITH SELECTIVELY PRESET FLOW CUTOFF OR INITIATING MEANS239/170Having means to selectively control discharge paths

Examiners

Primary: Kashnikow, Andres
Assistant: Ganey, Steven J.

Attorney, Agent or Firm

Hopkins Roden Crockett Hansen & Hoopes, PLLC

Foreign Patent References

3716349 DE 11/13/1988

International Class

A01G 027/00

Abstract

A system for applying fluid to a ground surface, the system includes (a) a plurality of nozzle valves, (b) a control switch and open and close manifold valves for operating each nozzle valve so that each nozzle valve closes essentially concurrently, and (c) a pair of switching manifolds have for operating each nozzle valve so that each nozzle valve is, selectively, opened or closed independently of each other nozzle valve, provided the opened and close valves have not closed the nozzle valves.