Fluid sprinkling – spraying – and diffusing – Distributor continuously moves relative to support during... – Including deflector
Reexamination Certificate
2001-08-23
2002-12-17
Ganey, Steven J. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Distributor continuously moves relative to support during...
Including deflector
C239S097000, C239S225100, C239S230000, C239S236000, C239S590500, C239SDIG001
Reexamination Certificate
active
06494385
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a controlling device for a rotating sprinkler that is connected between a water outlet and a rotating sprinkler, and having a substantially rectangular spraying range achievable by varying the quantity of spraying water therefrom.
2. Description of Related Art
Rotor-type sprinklers are widely used for watering lawns, golf courses, athletics fields, and more particularly for nursery gardening and agricultural farming to irrigate the land. The use of multiple rotor-type sprinklers is well known in the aforementioned situations and therefore, descriptions of the structure and the operation of the rotor-type sprinklers are omitted.
Generally speaking, conventional rotor-type sprinklers are connected to a water source, normally a faucet. Pressure of sprayed water from the water source drives the conventional rotor-type sprinklers to rotate and spray the water in a circular range. Referring to
FIG. 6
, the conventional rotor-type sprinklers are arranged in two different types that have some restrictions which are listed as following:
1. First type: The margins of the circular spraying ranges of the rotor-type sprinklers (
90
) are tangential, as shown in the left side portion of
FIG. 7
, whereby a dry area (
91
) is caused due to not being within the watering range. Therefore, this arrangement of the conventional rotor-type sprinklers is not usually used.
2. Second type: A high-density arrangement of the rotor-type sprinklers (
90
) is shown in the right side portion of FIG.
7
. Although all areas of the field are irrigated, multiple overlapped areas (
92
) are too damp because the overlapped areas (
92
) are watered twice, whereby water is wasted and plants in the field grow unevenly and possibly unhealthily due to the excess water. Besides, the high density arrangement needs more rotor-type sprinklers which results in high costs, and water pipes in accordance with the rotor-type sprinklers are necessarily complex which in turn causes more trouble in construction.
The present invention has arisen to mitigate and/or obviate the disadvantages of the conventional rotor-type sprinkler.
SUMMARY OF THE INVENTION
The main objective of the present invention is to provide a controlling device for a rotating sprinkler that makes the spraying range of the rotating sprinkler defined as a rectangle so as to enable efficient abutment of neighboring irrigation plots.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 3871582 (1975-03-01), Biddle
patent: 3884416 (1975-05-01), King
patent: 4281793 (1981-08-01), DeWitt
patent: 4462545 (1984-07-01), Lourenco
patent: 4819875 (1989-04-01), Beal
patent: 4907742 (1990-03-01), Whitehead et al.
patent: 5370311 (1994-12-01), Chen
patent: 5647541 (1997-07-01), Nelson
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