US PATENT SUBCLASS 440 / 38
JET DRIVE

Current as of: June, 1999
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440 /   HD   MARINE PROPULSION

38JET DRIVE {5}
39  DF  .~> Auxiliary use of propulsive fluid
40  DF  .~> Direction control for fluid jet {3}
44  DF  .~> Propulsion fluid is pressurized gas {1}
46  DF  .~> Having means to prevent clogging
47  DF  .~> Having means to increase fluid drive means efficiency

DEFINITION

Classification: 440/38

JET DRIVE:

(under the class definition) Device wherein the motive force is produced by a stream of fluid forcefully issuing from an outlet of the propulsion means which reacts with the fluid surrounding the propelling means thereby causing the vessel to move.

SEE OR SEARCH CLASS

60, Power Plants,

221+, for reaction propulsion devices wherein no more structure of the vessel is claimed than is necessary to mount the device.

239, Fluid Sprinkling, Spraying, and Diffusing,

127.1+, and 265.11+ for a reaction motor discharge nozzle, per se, as defined and limited in (1) Note and (2) Note under subclass 265.11.