US PATENT SUBCLASS 37 / 309
.~ With means to control dredger operation (e.g., movement of dredged material) in response to sensed condition

Current as of: June, 1999
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37 /   HD   EXCAVATING

307  DF  BENEATH A BODY OF WATER (E.G., DREDGER) {11}
309.~ With means to control dredger operation (e.g., movement of dredged material) in response to sensed condition {3}
310  DF  .~.~> Swell compensator
311  DF  .~.~> Suction relief valve
312  DF  .~.~> Control of swing or swing speed

DEFINITION

Classification: 37/309

With means to control dredger operation (e.g., movement of dredged material) in response to sensed condition:

(under subclass 307) Apparatus wherein a means is provided for (a) sensing a change in either the excavation apparatus, the excavated material, or the environment associated therewith, and (b) regulating the excavation apparatus, the excavated material, or the environment associated therewith in response to that change.

(1) Note. For a patent to be classified in this subclass, the claim must include at least three elements: (a) a dredger, (b) a sensor to detect a condition, and (c) a controller which responds to the sensor (e.g., pump, motor, valve, solenoid).

SEE OR SEARCH CLASS

60, Power Plants,

445+, for condition responsive control of pump or motor displacement.

137, Fluid Handling,

2+, for a fluid handling process including control of flow by a condition or characteristic of a fluid.

299, Mining or In Situ Disintegration of Hard Material, 1, for subject matter relating to automatic control involved in recovering valuable earth material and disintegrating hard

material in situ.