US Patent Class 440
MARINE PROPULSION-- Main Headings




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Current as of: June, 1999
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CLASS NOTES
1  DF  MEANS TO CONTROL THE SUPPLY OF ENERGY RESPONSIVE TO A SENSED CONDITION
2  DF  WITH INDICATOR
3  DF  DIVERSE ENGINE MEANS
4  DF  PLURAL ENGINES WITH SINGLE PROPELLING MEANS
5  DF  HYDRAULIC FLUID DRIVE FOR PROPELLING MEANS
6  DF  ELECTRIC DRIVE FOR PROPELLING MEANS {1}
8  DF  WIND DRIVEN MOTORS
9  DF  WAVE POWERED PROPELLING MEANS {1}
11  DF  POWERED FROM LAND VEHICLE SUPPORTED BY VESSEL {1}
12.5  DF  SELF-PROPELLED VEHICLE HAVING LAND AND WATER PROPULSION MEANS (E.G., AMPHIBIOUS VEHICLE) {5}
13  DF  OSCILLATING PROPELLING MEANS {3}
21  DF  OPERATOR POWERED DRIVE FOR PROPELLING MEANS {6}
33  DF  TOWING {3}
37  DF  AIR PROPELLED BOAT
38  DF  JET DRIVE {5}
48  DF  HELICAL SCREW
49  DF  SCREW PROPELLER {12}
84  DF  ENGINE, MOTOR, OR TRANSMISSION CONTROL MEANS {3}
88  DF  MEANS FOR HANDLING ENGINE FLUIDS {1}
90  DF  PADDLE WHEEL {2}
94  DF  UPRIGHT REMAINING ORBITING PADDLES
95  DF  FLEXIBLE ENDLESS PROPELLING MEANS {1}
98  DF  BUOYANT PROPELLING MEANS {2}
101  DF  OAR OR PADDLE {2}
111  DF  INBOARD ENGINE MOUNT {1}
113  DF  MISCELLANEOUS
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CROSS-REFERENCE ART COLLECTION
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900  DF  OUTBOARD MOTORS AND OUTDRIVES