The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 1996
Filed:
Nov. 09, 1994
Patrick J Ballu, Reims, FR;
Tecnoma, Epernay, FR;
Abstract
A spray device, especially for agricultural use, includes a centrifugal compressor which sends compressed air to at least one injector (20) placed upstream of the throat (16) of a convergent-divergent, so as to entrain the surrounding air by a venturi effect. The convergent-divergent may itself be of flattened shape, but it is preferred to group several parallel convergents-divergents (14) together along a line parallel to the maximum extension of the section of the air stream to be created. The device includes blowing panels (7), with a box-type structure, which have the convergents-divergents passing through them in leak-tight fashion. The internal volume of the box structure (7) constitutes a compressed air manifold connected, on the one hand, to the compressor and, on the other hand, to the injectors (20) by pipes (21, 22, 23).