US PATENT SUBCLASS 239 / 204
.~.~.~ Elevating means responsive to flow of spray fluid

Current as of: June, 1999
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239 /   HD   FLUID SPRINKLING, SPRAYING, AND DIFFUSING

200  DF  WITH FIXED SUPPORT FOR OR GROUND INSTALLED SUPPLY MEANS (E.G., STATIC CONSTRUCTIONAL INSTALLATIONS) {4}
201  DF  .~ Embedded or buried sprinkler {2}
203  DF  .~.~ With sprinkler head elevating means {1}
204.~.~.~ Elevating means responsive to flow of spray fluid {2}
205  DF  .~.~.~.~> With spring assisted retraction
206  DF  .~.~.~.~> Distributor continuously moves during spraying

DEFINITION

Classification: 239/204

(under subclass 203) Apparatus in which the motion for raising the sprinkler results from means responsive to the flow of spray fluid.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type, appropriate subclasses for a fluid operated expansible chamber motor, per se, which may be used to elevate the sprinkler, and for the combination of such a motor with a nominally recited distributor means in the absence of claimed structure to discharge the motor exhaust fluid through the distributor.

418, Rotary Expansible Chamber Devices, appropriate subclasses for a rotary expansible chamber motor, per se,

which may be used to elevate the sprinkler, and for the combination of such a motor with a nominally recited distributor means in the absence of claimed structure to discharge the motor exhaust fluid through the distributor.