Agricultural sprayer unit and an air-flow generating assembly of

Details Agricultural sprayer unit and an air-flow generating assembly of Agricultural sprayer unit and an air-flow generating assembly of

1996-09-06

1999-10-26

Weldon, Kevin

Fluid sprinkling, spraying, and diffusing

Orchard-type mobile distributor comprising fluent discharged...

239168, 239172, 239600, 239552, 2395875, B05B 906

Patent

active

059712953

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The present invention relates to an agricultural sprayer device particularly useful for the deposition of a chemical agent which is to be distributed on crops.
1. Field of the Invention
When spraying crops with chemical agents such as insecticides, fungicides, and the like, a problem resides in that the plants must be sprinkled on all surfaces as uniformly as possible, and for this reason, the chemical agent is usually atomized. This, however leads to the disadvantage that the wind may interfere whereby the mist is carried away by the wind and deposited in the wrong places. Additionally, many crops grow into an interwoven tangle so that penetration by sprays is virtually impossible. As such, the underside of the crops remain susceptible to desease and the like with only the tops thereof being protected. As a consequence, economic factors as well as considerations regarding the damage to environment due to the excessive use of potentially hazardous spraying agents have promoted the development of more efficient methods and implements for reducing the required dose rates by ensuring a correct deposition of the spraying agent.
Forced air streams have long been known as an invaluable method of constraining, transporting and depositing sprays for crop protection. Machinery developed for air-assisted spraying ranges from small hand-held devices to large, heavy duty equipment on wheels used to spray bush, vine and tree crops, and broadacre ground crops. Early examples of such machinery are disclosed in British patent no. 685,211 and U.S. Pat. No. 3,804,332 none of which gained much popularity due to their heavy-weight boom structure which reduced the maximum possible boom width. The same applies to the sprayer disclosed in U.S. Pat. Nos. 4,274,589 and 3,472,454 which are both cumbersome in use.
In the past decade a number of air-assisted sprayers have been developed, examples of which are described in European patent no. 272,740 (Van den Munckhof), U.S. Pat. No. 5,098,018 (Degania sprayers), Australian patent application no. 14,546/83 (Degania sprayers) and U.S. Pat. No. 4,927,080 (Hartvig Jensen & Co.). These sprayers comprise a spray boom carrying and air blower an an elongated, flexible sheet provided with an air discharge, either as a slit-like outlet or a series of perforations. Nozzles for spraying a spraying agent are situated alongside the air-flow generating means. Moreover, U.S. Pat. No. 4,982,898 discloses an agricultural sprayer having a rigid outer tube with a flexible, internal air duct. Reference is made to the above patents, and the above US patents are hereby incorporated in the present specification by reference.
2. Description of the Related Art
It is an object of the present invention to provide an agricultural spraying system which allows for a greater flexibility and which may be employed in an increased number of applications.
It is a further object of the present invention to provide a spraying system having means for providing a controlled air outflow.
An advantage of the agricultural sprayer system according to the present invention is that the air distribution pattern of the air-flow generating means may be varied in a particularly simple manner, allowing the spraying system to be used for spraying different types of crops and spraying crops under varying nature and weather conditions.
It is a feature of the present invention that an agricultural spraying system is provided rendering it possible, using simple means, to produce an air flow pattern which may be altered while, using the same simple means, allowing a variation of the air flow relative to the crops being sprayed and relative to the ground on which the crops are grown.
According to a first aspect of the present invention, the above object, the above advantage and the above feature, together with numerous other objects, advantages and features which will be evident from the below detailed description of preferred embodiments of the agricultural spraying system according to the present invention, ar

REFERENCES:
patent: 927315 (1909-07-01), Baldwin
patent: 1677486 (1928-07-01), Nelson
patent: 3472454 (1969-10-01), Blue
patent: 3666178 (1972-05-01), Crimmins et al.
patent: 3804332 (1974-04-01), Welch
patent: 3887129 (1975-06-01), Brown
patent: 3902667 (1975-09-01), Jackson et al.
patent: 4274589 (1981-06-01), Jones
patent: 4446928 (1984-05-01), McClure et al.
patent: 4927080 (1990-05-01), Alsing
patent: 4982898 (1991-01-01), Ballu
patent: 5098018 (1992-03-01), Hadar et al.
patent: 5176322 (1993-01-01), Sartor
patent: 5657928 (1997-08-01), Jian

Affiliated with

Also associated with

Rating

Agricultural sprayer unit and an air-flow generating assembly of does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Agricultural sprayer unit and an air-flow generating assembly of, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Agricultural sprayer unit and an air-flow generating assembly of will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-754310