US PATENT SUBCLASS 137 / 40
.~ Position relative body of water (e.g., marine governors)

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

38  DF  CONTROL BY CHANGE OF POSITION OR INERTIA OF SYSTEM {5}
40.~ Position relative body of water (e.g., marine governors) {2}
41  DF  .~.~> Float controlled
42  DF  .~.~> Pressure or head controlled

DEFINITION

Classification: 137/40

(under subclass 38) Apparatus wherein the flow is controlled in response to the position of the system as a whole relative to a body of water in which the system is located.

(1) Note. To be classifiable in this or indented subclass the apparatus must include some means for sensing the position of the system relative to the body of water.

(2) Note. Marine governors operated in response to the shifting of the position of the system relative to gravity

(due to ocean wave motion for example) but which do not include means for sensing the position of the system relative the water are found in other subclasses of this group.

SEE OR SEARCH THIS CLASS, SUBCLASS:

146, for the plunge or immersion starting of siphons.

SEE OR SEARCH CLASS 440, Marine Propulsion,

74, for marine propulsion screw type propellers combined with propeller brakes to prevent racing of the propeller.