US PATENT SUBCLASS 239 / 63
WITH CUTOFF OR FLOW VARYING MEANS OPERATED BY MEANS RESPONSIVE TO DISCHARGED FLUID (E.G., GROUND MOISTURE SENSING)

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

63WITH CUTOFF OR FLOW VARYING MEANS OPERATED BY MEANS RESPONSIVE TO DISCHARGED FLUID (E.G., GROUND MOISTURE SENSING) {2}
64  DF  .~> With overriding second control means
65  DF  .~> By level or weight in testing receiver

DEFINITION

Classification: 239/63

(under the class definition) Apparatus for commencing, terminating or changing the flow therefrom by means responsive, sensitive, or reactive to fluid which has left the system (or lack thereof) either in or on the surface of the ground or in the area being treated.

(1) Note. The responsive means react to the fluid leaving the system through the normal distributor openings. If part of the fluid is bled off from the normal path to the openings and is permitted to discharge into a pan or receptacle or against moisture sensitive means such patents will not be found in subclasses 63+ but will be found in subclasses 67 and 68.

(2) Note. For this and the indented subclasses, a system must at least be disclosed as a sprinkler apparatus with control means being responsive to a condition brought about by use of the said sprinkler. If there is no clear disclosure that the moisture sensing means is positioned within and senses the moisture in the area served by the sprinkler system, it is assumed that the means senses and responds only

to atmospheric rainfall. An apparatus with a means sensing atmospheric rainfall for control of a sprinkler or a spray outlet is classifiable in other appropriate subclasses in Class 239 if the sprinkler or spray outlet is positively claimed and in Class 137 if a mere fluid system is claimed.

(3) Note. Included are devices which respond to ground content moisture conditions to commence spraying because of lack of water in the ground or which terminate spraying because of a rain supplemented ground moisture condition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

67, for a spray system having a control means (e.g., volume, rate of flow or atmospheric rainfall responsive) for causing intermittent interruption of the supply. 238, for spray fluid motor drive means for moving distributors responding to weight of accumulated fluid for motion either of sprayed or diverted fluid.

SEE OR SEARCH CLASS

137, Fluid Handling,

78.2+, for systems in which the control means responds to atmospheric conditions to control fluid flow and subclasses 403+ for liquid level responsive systems involving the weight of accumulated fluid.