Rotary nozzle assembly having insertable rotatable nozzle disc

Fluid sprinkling – spraying – and diffusing – With fixed support for or ground installed supply means – Embedded or buried sprinkler

Reexamination Certificate

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Details

C239S394000

Reexamination Certificate

active

06182909

ABSTRACT:

TECHNICAL FIELD
This invention relates to rotary drive sprinklers having a nozzle assembly with a rotatable disc having a plurality of nozzle openings which can be selectively aligned with an inner flow opening to achieve a desired flow exiting from the rotary drive sprinkler.
BACKGROUND ART
U.S. patent application Ser. No. 08/405,033 to CARL L. C. Kah, III for OPERATIONALLY CHANGEABLE MULTIPLE NOZZLES SPRINKLER is included here as if fully set forth and provides for change from one nozzle to another by rotationally moving a nozzle selection sleeve and a nozzle plate is disclosed having a nozzle opening which slides into a groove from the top of the nozzle housing.
U.S. patent application Ser. No. 09/104,456 to Carl L. C. Kah, Jr. and Carl L. C. Kah, III for SELECTABLE NOZZLE ROTARY DRIVEN SPRINKLER is included here as if fully set forth and provides for change from one nozzle to another by rotating an internal selection rotor.
Other patents setting forth a background for this invention are: U.S. Pat. Nos. 3,645,451; 4,717,074; 4,625,914; 4,867,378; 5,048,757; 5,104,045; 5,226,599; 5,526,982; 3,762,650; Des, 388,502; Russian Patent No. 975,101 and French Patent No. 2,313,132.
DISCLOSURE OF INVENTION
It is an object of this invention to provide a rotary drive sprinkler with a rotatable nozzle assembly having a rotatable circular nozzle disc having a plurality of different nozzle orifices therearound in a cylindrical recess in the side of the nozzle assembly which can be rotated to place the different sized nozzle orifices over an inner flow opening to achieve a desired flow exiting from the sprinkler. The sprinkler may be shut off at the nozzle assembly by placing the rotatable circular nozzle disc to a position where the disc between two nozzle orifices covers the inner flow opening.
It is another object of this invention to provide for easy removal of the rotatable nozzle disc from the side of the exterior of the nozzle assembly and to insert another rotatable nozzle disc having a different set of nozzle orifices therearound.
It is a further object of the invention to provide an improved rotary drive sprinkler having a rotatable nozzle assembly having a recess therein accessible from the top for receiving a circular nozzle disc which can be rotated by an adjusting screw which can be actuated from the top of the rotatable nozzle assembly.
It is another object of this invention to support the circular nozzle disc for rotation in its recess by having a semi-circular shape at the bottom of the recess and insertable arcuate members contoured to fit the circular nozzle disc on each side of the top of the recess.
It is a further object of this invention to provide for indicating from the top of the nozzle assembly the nozzle selected from the nozzles around the circular nozzle disc by a window in the top of the nozzle housing capable of seeing the circumference of the circular nozzle disc which has nozzle identifying marks.


REFERENCES:
patent: 3083872 (1963-04-01), Meshberg
patent: 3814326 (1974-06-01), Bartlett
patent: 4784325 (1988-11-01), Walker et al.

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