CPC Definition - Subclass F03H
Examples of places in relation to which this place is residual:
Marine propulsion or steering | |
Propellers for aeroplanes | |
Rotors for helicopters | |
Jet-propulsion plants | |
Machines or engines for liquids |
Attention is drawn to the following places, which may be of interest for search:
Spring, weight, inertia or like motors; mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for | |
Electric generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means |
This place covers:
Engines exhausting ions or a plasma (ions and electrons) to produce a reactive propulsive thrust.
Details thereof.
Multi-purpose ion sources which can be used inter alia as ion thruster should be classified only in H01J 27/00 and lower.
This place does not cover:
Adaptations of ion or plasma engines for fitting in or to, cosmonautic vehicles | |
Ion sources for plasma processing or for ion beams | |
Apparatus for generating ions to be introduced into non-enclosed gases | |
Plasma accelerators |
Attention is drawn to the following places, which may be of interest for search:
Arcjets and other resistojets for fitting in or to cosmonautic vehicles | |
Electromagnetic launchers; Plasma-actuated launchers (railguns) |
Aspects related to the generation of ions (resp. plasma) should be classified in H01J 27/02 (resp. H05H 1/24) and lower.
For example, a microwave ion thruster with a peculiar acceleration grid should be classified in H01J 27/16 and F03H 1/0043.
In patent documents, the following abbreviations are often used:
FEEP | Field Emission Electric Propulsion |
HET | Hall-Effect Thruster |
MPD | Magneto Plasma Dynamic |
PPT | Pulsed Plasma Thruster |
SPT | Stationary Plasma Thruster, a kind of Hall-Effect Thruster |
This place covers:
Engines exhausting photons to produce a reactive propulsive thrust .
This place does not cover:
This place covers:
Engines producing a reactive propulsive thrust without exhausting a fluid, a plasma or photons .
Engines allegedly producing a reactive propulsive thrust without exhausting anything, in violation of the Newtonian law of action and reaction.
This place does not cover:
Attention is drawn to the following places, which may be of interest for search:
Unconventional spacecraft propulsion systems | |
Spring, weight, inertia or like motors; Mechanical-power producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for |