CPC Definition - Subclass F01B
This place covers:
Machines or engines, in general or of positive-displacement type
This place does not cover:
Attention is drawn to the following places, which may be of interest for search:
Steam engine plants | |
Cyclically operating valves for machines or engines | |
Lubrication of machines or engines in general | |
Internal combustion engines | |
Internal combustion aspects of reciprocating piston engines | |
Crankshafts, crossheads, connecting-rods | |
Flywheels | |
Gearings for interconverting rotary motion and reciprocating motion in general | |
Pistons, piston rods, cylinders for engines in general |
In patent documents, the following abbreviations are often used:
Engine | a device for continuously converting fluid energy into mechanical power, Thus, this term includes, for example, steam piston engines or steam turbines, per se, or internal-combustion piston engines, but it excludes single-stroke devices. |
Machine | a device which could equally be an engine and a pump, and not a device which is restricted to an engine or one which is restricted to a pump. |
Pump | a device for continuously raising, forcing, compressing, or exhausting fluid by mechanical or other means. Thus, this term includes fans or blowers; |
Positive displacement | Means the way the energy of a working fluid is transformed into mechanical energy, in which variations of volume created by the working fluid in a working chamber produce equivalent displacements of the mechanical member transmitting the energy, the dynamic effect of the fluid being of minor importance, and vice versa ; |
Non-positive displacement | means the way the energy of a working fluid is transformed into mechanical energy, by transformation of the energy of the working fluid into kinetic energy, and vice versa ; |
Oscillating-piston machine | means a positive-displacement machine in which a fluid-engaging work-transmitting member oscillates. This definition applies also to engines and pumps |
Rotary-piston machine | means a positive-displacement machine in which a fluid-engaging work-transmitting member rotates about a fixed axis or about an axis moving along a circular or similar orbit. This definition applies also to engines and pumps |
Rotary piston | means the work-transmitting member of a rotary-piston machine and may be of any suitable form, e.g., like a toothed gear; |
Free piston | means a piston of which the length of stroke is not defined by any member driven thereby; |
Cylinders | "cylinders" means positive-displacement working chambers in general. Thus, this term is not restricted to cylinders of circular cross-section; |
Main shaft | means the shaft which converts reciprocating piston motion into rotary motion or vice versa ; |
Plant | means an engine together with such additional apparatus as is necessary to run the engine. For example, a steam engine plant includes a steam engine and means for generating the steam |
Working fluid | means the driven fluid in a pump or the driving fluid in an engine. The working fluid can be in a compressible, gaseous state, called elastic fluid, e.g. steam; in a liquid state; or in a state where there is coexistence of an elastic fluid and liquid phase. |
Illustrative example of subject matter classified in F01B 1/0603
Illustrative example of subject matter classified in F01B 1/062
Illustrative example of subject matter classified in F01B 3/0002
Illustrative example of subject matter classified in F01B 3/0005
Illustrative example of subject matter classified in F01B 3/0008
Illustrative example of subject matter classified in F01B 3/0011
Illustrative example of subject matter classified in F01B 3/0014
Illustrative example of subject matter classified in F01B 3/0032
Illustrative example of subject matter classified in F01B 3/0038
Illustrative example of subject matter classified in F01B 3/0041
Illustrative example of subject matter classified in F01B 3/0047
Illustrative example of subject matter classified in F01B 3/005
Illustrative example of subject matter classified in F01B 3/0052
Illustrative example of subject matter classified in F01B 3/0061
Illustrative example of subject matter classified in F01B 3/007
Illustrative example of subject matter classified in F01B 3/0076
This place covers:
having pistons with rotary and reciprocating motion, i.e. spinning pistons. The piston reciprocates and e.g. by means of a curved groove on the outer circumference will also rotate, (spin) along its longitudinal axis.
Attention is drawn to the following places, which may be of interest for search:
Illustrative example of subject matter classified in F01B 3/045
Illustrative example of subject matter classified in F01B 3/103
Illustrative example of subject matter classified in F01B 3/104
Illustrative example of subject matter classified in F01B 3/106
Illustrative example of subject matter classified in F01B 3/108
This place does not cover:
By changing the inclination of the swash plate |
Illustrative example of subject matter classified in F01B 3/109
Illustrative example of subject matter classified in F01B 5/003
Illustrative example of subject matter classified in F01B 5/006
This place does not cover:
Coaxial cylinders in opposite arrangement relative to main shaft |
Illustrative example of subject matter classified in F01B 7/00
This place covers:
Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups.
E.g. when no recognisable crank shaft is present or the main shaft is a cam shaft:
This place does not cover:
Idling devices characterised by disengagement of connections between pistons and main shafts during idling |
Illustrative example of subject matter classified in F01B 9/023
Illustrative example of subject matter classified in F01B 9/042
Illustrative example of subject matter classified in F01B 9/047
Attention is drawn to the following places, which may be of interest for search:
Free-piston combustion engines |
Illustrative example of subject matter classified in F01B 11/001
Illustrative example of subject matter classified in F01B 11/002
Illustrative example of subject matter classified in F01B 11/004
Illustrative example of subject matter classified in F01B 11/006
"...the steam supplied through the inlet 13 and the passage 12 enters the port 18, and acting upon the 1 upper face of the element 4 of the double piston (4,5), causes the latter to move downwards against the opposing action of the steam continuously supplied to the space 11...
Illustrative example of subject matter classified in F01B 11/007
Illustrative example of subject matter classified in F01B 11/008
Illustrative example of subject matter classified in F01B 11/009
Illustrative example of subject matter classified in F01B 11/02
This place does not cover:
Adaptations of engines for driving, or combinations with, pumps |
Illustrative example of subject matter classified in F01B 11/04
Illustrative example of subject matter classified in F01B 11/06
This place does not cover:
Equalising or cushioning devices |
Illustrative example of subject matter classified in F01B 11/08
This place does not cover:
Machines or engines of flexible-wall type |
Attention is drawn to the following places, which may be of interest for search:
Internal combustion engine aspects |
Illustrative example of subject matter classified in F01B 13/02
Illustrative example of subject matter classified in F01B 13/04
Illustrative example of subject matter classified in F01B 13/045
Illustrative example of subject matter classified in F01B 13/061
Illustrative example of subject matter classified in F01B 13/068
This place covers:
Reciprocating-piston machines or engines with movable cylinders other than provided for in group F01B 13/00.
E.g. reciprocating-piston machines or engines having reciprocating cylinders or pivoting and oscillating cylinders.
This place does not cover:
Movable cylinder sleeves for working fluid control |
This place covers:
Reciprocating-piston machines or engines characterised by use of uniflow principle:
E.g. compressed gas engines where the working fluid enter a working cylinder, expands and then exits the cylinder.
In this place, the following terms or expressions are used with the meaning indicated:
In patent document the word "uniflow" is often used with the meaning "open circuit where gas enters cylinder, expands, and is then released"
This place covers:
Compressed gas engines.
Attention is drawn to the following places, which may be of interest for search:
Arrangement or mounting of steam or gaseous-pressure propulsion units of the piston type in vehicles | |
Arrangement or mounting of plural diverse prime-moves for mutual or common propulsion, prime movers comprising combustion engines and a chargeable fluidic accumulator | |
Ultra-small engines, e.g. for driving models |
Illustrative example of subject matter classified in F01B 17/022
This place covers:
Separators for separating liquid or oil from compressed gas for gas engines.
This place does not cover:
Steam engine plants |
Attention is drawn to the following places, which may be of interest for search:
Toys | |
Ultra small engines: |
This place covers:
Positive-displacement machines or engines of flexible-wall type. E.g. where the piston is made of a diaphragm or bellows.
Illustrative example of subject matter classified in F01B 19/02
Illustrative example of subject matter classified in F01B 19/04
This place covers:
Combinations of two or more machines or engines. E.g. a combined internal combustion engine and steam engine.
This place does not cover:
Combinations of engines with devices driven thereby | |
Combinations of two or more pumps |
This place does not cover:
Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type | |
Adaptations of combustion engines for driving vehicles of for driving propellers | |
Adaptations of combustion engines for driving pumps, hand-held tools or electric generators; portable combinations of engine with engine-driven devices, e.g. with non driven apparatus |
This place does not cover:
Starting combustion engines |
Attention is drawn to the following places, which may be of interest for search:
Machine or engine casings, other than those peculiar to steam engines |