CPC Definition - Subclass F03H

Last Updated Version: 2016.11
PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR (from combustion products F02K)
References
References out of a residual place

Examples of places in relation to which this place is residual:

Marine propulsion or steering

B63H

Propellers for aeroplanes

B64C 11/00

Rotors for helicopters

B64C 27/32

Jet-propulsion plants

F02K

Machines or engines for liquids

F03B

Informative references

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

F03G

Electric generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means

H02N 11/00

Using plasma to produce a reactive propulsive thrust (generating plasma H05H 1/00 ){(ion sources per se H01J 27/02, ion sources for plasma processing or ion beams H01J 37/08)}
Definition statement

This place covers:

Engines exhausting ions or a plasma (ions and electrons) to produce a reactive propulsive thrust.

Details thereof.

Relationships with other classification places

Multi-purpose ion sources which can be used inter alia as ion thruster should be classified only in H01J 27/00 and lower.

References
Limiting references

This place does not cover:

Adaptations of ion or plasma engines for fitting in or to, cosmonautic vehicles

B64G 1/405

Ion sources for plasma processing or for ion beams

H01J 37/08

Apparatus for generating ions to be introduced into non-enclosed gases

H01T 23/00

Plasma accelerators

H05H 1/54

Informative references

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

B64G 1/406

Electromagnetic launchers; Plasma-actuated launchers (railguns)

F41B 6/00

Special rules of classification

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.

Synonyms and Keywords

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

Use of photons to produce a reactive propulsive thrust
Definition statement

This place covers:

Engines exhausting photons to produce a reactive propulsive thrust .

References
Limiting references

This place does not cover:

Vehicle lighting

B60Q

Arrangements or adaptations of signal or lighting devices for fitting in or to aircraft

B64D 47/02

Adaptations of propulsion systems for fitting in or to, cosmonautic vehicles

B64G 1/40

Lighting in general

F21

Devices using stimulated emission, e.g. lasers

H01S

Electric lighting

H05B

Subject matter not provided for in other groups of this subclass
Definition statement

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.

References
Limiting references

This place does not cover:

Using plasma to produce a reactive propulsive thrust

F03H 1/00

Using photons to produce a reactive propulsive thrust

F03H 3/00

Jet-propulsion plants

F02K

Informative references

Attention is drawn to the following places, which may be of interest for search:

Unconventional spacecraft propulsion systems

B64G 1/409

Spring, weight, inertia or like motors; Mechanical-power producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for

F03G