Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – With impact motive means
Patent
1997-07-10
2000-08-01
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
With impact motive means
239233, 239600, 239390, B05B 308
Patent
active
060954329
DESCRIPTION:
BRIEF SUMMARY
This application Ser. No. 08/875483 is the National Stage of PCT/IT96/00003.
FIELD OF THE INVENTION
The invention relates to an irrigator capable of angular movement about an approximately vertical axis to cover an area requiring irrigation. The irrigator has been designed so as to be quick and simple to put together, and so that most of its components can easily be moulded, for example in synthetic resin. These and other objects and advantages will be clear from the following text.
SUMMARY AND OBJECTIVES OF THE INVENTION
The irrigator is of the type having a leaktight coupling between the fixed part and the mobile part, and a pipe head offering a curved path in which a portion that commences axially is deflected to form a final portion having a certain inclination. According to the invention said inclined final portion is very short and forms a seat for an interchangeable nozzle selectable from a series of nozzles having tapering through orifices of different inclinations and all connectable to said initial portion.
Said nozzles and their seat may have snapfitting forms, with guides to allow only one angular position of the nozzle when inserted into the seat. Said nozzles are advantageously made of a material offering elastic flexibility for easy insertion and removal.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and specific objects attained by its uses, reference is made to the accompanying drawings and descriptive matter in which preferred embodiments of the invention are illustrated.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
FIG. 1 shows a general axial section of the irrigator;
FIG. 2 shows an exploded view of the main components of the irrigator;
FIGS. 3 and 4 show a view on III--III and a local section on IV--IV as marked in FIG. 2;
FIG. 5 shows, separately, an elastic retaining ring component for locking together the fixed part and angularly mobile part while allowing angular movement;
FIGS. 6 and 7 show in isolation, in side elevation and viewed from the line marked VII--VII in FIG. 6 the pivoting arm by which the jet of the nozzles is used to cause angular movement; and
FIGS. 8, 9 and 10 show three possible examples of interchangeable nozzles in axial section.
In some of the drawings the positions of parts of the components illustrated are altered for clarity.
DETAILED DESCRIPTION OF AN EMBODIMENT OF THE INVENTION
As illustrated in the accompanying drawing, 1 denotes the fixed part as a whole and 3 the mobile part. The function of the latter is to form a spray head inclined at a shallow angle to the horizontal and offering the possibility of producing jets of different inclinations in the manner indicated later; the mobile part 3 is actually that part which forms a deflecting bend. 5 denotes a pivoting arm which, in a manner known per se, causes the mobile part 3 to move angularly in successive and periodically reversed steps by using the energy supplied by the jet of irrigating liquid. In FIGS. 1 and 2, 7 denotes one of the nozzles that can be fitted into the mobile part 3.
The fixed part 1 comprises a large axial cavity 11 with an internal thread 12, while a skirt 1A is formed on the outside for handling purposes; the axial passage 11 includes a narrower intermediate portion 13 which may include a grid 14; above this is a final double step 15 which forms the seal seat for an axial seal 8 and allows relative movement between the fixed part 1 and the mobile part 3. Formed around the outside of the reduced-diameter portion 13 of the passage 11 is an external annular seat 17 for an elastic ring 9 open at 9A and forming two opposite teeth 9B that are triangular in shape or otherwise present an inclined guide surface for insertion. The external annular seat 17 of the part 1 may be defined by two series of lower 17A and upper 17B projections that define said seat and are intended to minimize th
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