Title:
SPRAYING APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO1999055467
Kind Code:
A3
Abstract:
A modified droplet generator of the kind disclosed in WO97/16257 has a chamber sidewall formed with droplet-generating outlets and the sidewall providing the wall or target at which the change of liquid supply flow direction takes place prior to droplet generation and air-entrainment through the external outlets of the chamber. Liquid supply is through a supply duct (212) extending lengthwise of the chamber and formed with lateral outlets (214) to deliver liquid to the sidewall. As a result, the chamber can be in substantially extended format with a series of external outlets (208) along its length. In one embodiment the droplet generator completely straddles a crop row so as to produce inward spray plumes from all sides and above. A gas supply to the chamber which promotes droplet formation during use is maintained for an interval when spraying ceases so as to inhibit dripping from the outlets by pushing liquid back to tank.
Inventors:
BENEST ROGER SIDNEY (GB)
Application Number:
PCT/GB1999/001098
Publication Date:
December 16, 1999
Filing Date:
April 26, 1999
Export Citation:
Assignee:
BENEST ENG LTD (GB)
BENEST ROGER SIDNEY (GB)
BENEST ROGER SIDNEY (GB)
International Classes:
B05B7/04; B05B7/08; B05B15/02; B05B15/55; (IPC1-7): B05B7/04; B05B7/08; B05B15/02
Domestic Patent References:
| WO1997016257A1 | 1997-05-09 | |||
| WO1996031118A1 | 1996-10-10 |
Foreign References:
| US4899937A | 1990-02-13 | |||
| US4815665A | 1989-03-28 | |||
| GB431723A | 1935-07-15 | |||
| US5447254A | 1995-09-05 | |||
| US5119989A | 1992-06-09 |
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