Devices for changing the direction or speed of a vessel's motion by means of rudders, brakes, speed-retarders, and the like.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21, and 23+, for torpedoes with steering control means.
162, for tillers.
209, for drag anchors for speed-retarding and steering.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism, appropriate subclasses under Mechanical Movements.
91, Motors: Expansible Chamber Type, appropriate subclasses for expansible chamber motors for operating steering mechanism.
180, Motor Vehicles, 6.2+, for a motor vehicle which is steered by creating a difference between the driving effort developed by one or more traction elements located on one side of the vehicle and the driving effort developed by one or more traction elements located on the other side thereof; and subclasses 79+ for a motor vehicle having means for guiding it.
244, Aeronautics,
75+, for apparatus and devices for controlling aircraft. Subclasses 76+ is the generic subclass for the automatic steering of mobile craft in two and three dimensions. See subclass 175 and the classes specified in the notes thereto
for the classes which provide for electrically controlled or actuated apparatus for controlling the motion and/or steering of mobile devices and for a statement as to the line between the classes.
280, Land Vehicles,
263+, and 771+ for occupant steered vehicles.
318, Electricity: Motive Power Systems, appropriate subclasses for electric motor systems which might be used to steer a vessel particularly
580+, and 648+ for automatic control of electric motors in response to direction, inclination or angular position.
440, Marine Propulsion,
12, 13+, 21+, 40+, 53+, 90+, and 95+ for various types of steering-gear involved in and combined with propelling devices.
