|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES AND PUMPS

|  | F01 |
MACHINES OR ENGINES IN GENERAL (combustion engines Fulltext... Hierarchy... Expanded...F02; machines for liquids Fulltext... Hierarchy... Expanded...F03, Fulltext... Hierarchy... Expanded...F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES

|  | F01B |
MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type Fulltext... Hierarchy... Expanded...F01C; of non-positive-displacement type Fulltext... Hierarchy... Expanded...F01D; crankshafts, crossheads, connecting-rods Fulltext... Hierarchy... Expanded...F16C; flywheels Fulltext... Hierarchy... Expanded...F16F; gearings for interconverting rotary motion and reciprocating motion in general Fulltext... Hierarchy... Expanded...F16H; pistons, piston-rods, cylinders, for engines in general Fulltext... Hierarchy... Expanded...F16J)

|  | F01B |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01, especially as regards the definitions of "steam" and "special vapour". This sub-class comprises the following subject-matter, except the matter provided for in sub-classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01C-F01P: engines for elastic fluids, e.g. steam engines, engines for liquids and elastic fluids, machines for elastic fluids, machines for liquids and elastic fluids.

|  | F01B 1/00 |
Multi-cylinder reciprocating-piston machines or engines (Fulltext... Hierarchy... Expanded...F01B 3/00, Fulltext... Hierarchy... Expanded...F01B 5/00 take precedence)

|  | F01B 1/02 |
· | with cylinders all in one line

|  | F01B 1/04 |
· | with cylinders in V-arrangement

|  | F01B 1/06 |
· | with cylinders in star or fan arrangement

|  | F01B 1/08 |
· | with cylinders arranged oppositely relative to main shaft and of "flat" type

|  | F01B 1/10 |
· | with more than one main shaft, e.g. coupled to common output shaft (combinations of two or more machines or engines Fulltext... Hierarchy... Expanded...F01B 21/00)

|  | F01B 1/12 |
· | Separate cylinder-crankcase elements coupled together to form a unit

|  | F01B 3/00 |
Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis

|  | F01B 3/02 |
· | with wobble-plate

|  | F01B 3/04 |
· | the piston motion being transmitted by curved surfaces

|  | F01B 3/06 |
· · | by multi-turn helical surfaces and automatic reversal

|  | F01B 3/08 |
· · · | the helices being arranged on the pistons

|  | F01B 3/10 |
· | Control of working-fluid admission or discharge peculiar thereto (suitable for more general application Fulltext... Hierarchy... Expanded...F01L)

|  | F01B 5/00 |
Reciprocating-piston machines or engines with cylinder axes arranged substantially tangentially to a circle centred on main shaft axis

|  | F01B 7/00 |
Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft Fulltext... Hierarchy... Expanded...F01B 1/08)

|  | F01B 7/02 |
· | with oppositely reciprocating pistons

|  | F01B 7/04 |
· · | acting on same main shaft

|  | F01B 7/06 |
· · · | using only connecting-rods for conversion of reciprocatory into rotary motion or vice versa

|  | F01B 7/08 |
· · · · | with side rods

|  | F01B 7/10 |
· · · · | having piston-rod of one piston passed through other piston

|  | F01B 7/12 |
· · · | using rockers and connecting-rods

|  | F01B 7/14 |
· · | acting on different main shafts

|  | F01B 7/16 |
· | with pistons synchronously moving in tandem arrangement

|  | F01B 7/18 |
· | with differential piston (Fulltext... Hierarchy... Expanded...F01B 7/20 takes precedence)

|  | F01B 7/20 |
· | with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other

|  | F01B 9/00 |
Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups (connections disengageable during idling Fulltext... Hierarchy... Expanded...F01B 31/24)

|  | F01B 9/02 |
· | with crankshaft

|  | F01B 9/04 |
· | with rotary main shaft other than crankshaft

|  | F01B 9/06 |
· · | the piston motion being transmitted by curved surfaces

|  | F01B 9/08 |
· · | with ratchet and pawl

|  | F01B 11/00 |
Reciprocating-piston machines or engines without rotary main shaft, e.g. of free-piston type

|  | F01B 11/02 |
· | Equalising or cushioning devices

|  | F01B 11/04 |
· | Engines combined with reciprocatory driven devices, e.g. hammers (with pumps Fulltext... Hierarchy... Expanded...F01B 23/08; predominating aspects of driven devices, see the relevant classes for the devices)

|  | F01B 11/06 |
· · | for generating vibration only

|  | F01B 11/08 |
· | with direct fluid transmission link (Fulltext... Hierarchy... Expanded...F01B 11/02 takes precedence)

|  | F01B 13/00 |
Rotary machines or engines in which the working fluid is exclusively displaced by or, exclusively, displaced one or more reciprocating pistons

|  | F01B 13/02 |
· | with one cylinder only

|  | F01B 13/04 |
· | with more than one cylinder

|  | F01B 13/06 |
· · | in star arrangement

|  | F01B 15/00 |
Reciprocating-piston machines or engines with movable cylinders other than provided for Fulltext... Hierarchy... Expanded...F01B 13/00 (with movable cylinder sleeves for working-fluid control Fulltext... Hierarchy... Expanded...F01L)

|  | F01B 15/02 |
· | with reciprocating cylinders (with one piston within another Fulltext... Hierarchy... Expanded...F01B 7/20)

|  | F01B 15/04 |
· | with oscillating cylinder

|  | F01B 15/06 |
· · | Control of working-fluid admission or discharge peculiar thereto

|  | F01B 17/00 |
Reciprocating-piston machines or engines characterised by use of uniflow principle

|  | F01B 17/02 |
· | Engines

|  | F01B 17/04 |
· · | Steam engines

|  | F01B 19/00 |
Positive-displacement machines or engines of flexible-wall type

|  | F01B 19/02 |
· | with plate-like flexible members

|  | F01B 19/04 |
· | with tubular flexible members

|  | F01B 21/00 |
Combinations of two or more machines or engines (Fulltext... Hierarchy... Expanded...F01B 23/00 takes precedence; regulating or controlling, see the relevant groups; combinations of two or more pumps Fulltext... Hierarchy... Expanded...F04; fluid gearing Fulltext... Hierarchy... Expanded...F16H)

|  | F01B 21/02 |
· | the machines or engines being all of reciprocating-piston type

|  | F01B 21/04 |
· | the machines or engines being not all of reciprocating-piston type, e.g. of reciprocating steam engine with steam turbine

|  | F01B 23/00 |
Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby (Fulltext... Hierarchy... Expanded...F01B 11/00 takes precedence, aspects predominantly concerning driven devices see the relevant classes for these devices; regulating or controlling, see the relevant groups; fluid gearing Fulltext... Hierarchy... Expanded...F16H)

|  | F01B 23/02 |
· | Adaptations for driving vehicles, e.g. locomotives (arrangements in vehicles, see the relevant classes for vehicles)

|  | F01B 23/04 |
· · | the vehicles being waterborne vessels

|  | F01B 23/06 |
· | Adaptations for driving, or combinations with, hand-held tools or the like

|  | F01B 23/08 |
· | Adaptations for driving, or combinations with, pumps

|  | F01B 23/10 |
· | Adaptations for driving, or combinations with, electric generators

|  | F01B 23/12 |
· | Adaptations for driving rolling mills or other heavy reversing machinery

|  | F01B 25/00 |
Regulating, controlling, or safety means (regulating or controlling in general Fulltext... Hierarchy... Expanded...G05)

|  | F01B 25/02 |
· | Regulating or controlling by varying working-fluid admission or exhaust, e.g. by varying pressure or quantity (distributing or expansion valve gear Fulltext... Hierarchy... Expanded...F01L)

|  | F01B 25/04 |
· · | Sensing elements

|  | F01B 25/06 |
· · · | responsive to speed

|  | F01B 25/08 |
· · | Final actuators

|  | F01B 25/10 |
· · · | Arrangements or adaptations of working-fluid admission for discharge valves (valves per se Fulltext... Hierarchy... Expanded...F16K)

|  | F01B 25/12 |
· · | Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted (sensing elements alone Fulltext... Hierarchy... Expanded...F01B 25/04; final actuators alone Fulltext... Hierarchy... Expanded...F01B 25/08)

|  | F01B 25/14 |
· · | peculiar to particular kinds of machines or engines

|  | F01B 25/16 |
· | Safety means responsive to specific conditions (against water hammer or the like in steam engines Fulltext... Hierarchy... Expanded...F01B 31/34)

|  | F01B 25/18 |
· · | preventing rotation in wrong direction

|  | F01B 25/20 |
· | Checking operation of safety devices

|  | F01B 25/22 |
· | Braking by redirecting working fluid

|  | F01B 25/24 |
· · | thereby regenerating energy

|  | F01B 25/26 |
· | Warning devices

|  | F01B 27/00 |
Starting of machines or engines (starting combustion engines Fulltext... Hierarchy... Expanded...F02N)

|  | F01B 27/02 |
· | of reciprocating-piston engines

|  | F01B 27/04 |
· · | by directing working-fluid supply, e.g. by aid of by-pass steam conduits

|  | F01B 27/06 |
· · · | specially for compound engines

|  | F01B 27/08 |
· · | Means for moving crank off dead-centre (turning-gear in general Fulltext... Hierarchy... Expanded...F16H)

|  | F01B 29/00 |
Machines or engines with pertinent characteristics other than those provided for in preceding main groups

|  | F01B 29/02 |
· | Atmospheric engines, i.e. atmosphere acting against vacuum

|  | F01B 29/04 |
· | characterised by means for converting from one type to a different one

|  | F01B 29/06 |
· · | from steam engine into combustion engine

|  | F01B 29/08 |
· | Reciprocating-piston machines or engines not otherwise provided for

|  | F01B 29/10 |
· · | Engines (refrigerating expansion engines Fulltext... Hierarchy... Expanded...F25B)

|  | F01B 29/12 |
· · · | Steam engines (toy steam engines Fulltext... Hierarchy... Expanded...A63H 25/00)

|  | F01B 31/00 |
Component parts, details, or accessories not provided for in, or of interest apart from, other groups (machine or engine casings, other than those peculiar to steam engines, Fulltext... Hierarchy... Expanded...F16M)

|  | F01B 31/02 |
· | De-icing means for engines having icing phenomena

|  | F01B 31/04 |
· | Means for equalising torque in reciprocating-piston machines or engines (compensation of inertial forces, suppression of vibration in systems Fulltext... Hierarchy... Expanded...F16F)

|  | F01B 31/06 |
· | Means for compensating relative expansion of component parts

|  | F01B 31/08 |
· | Cooling of steam engines (cooling of fluid machines or engines in general Fulltext... Hierarchy... Expanded...F01P); Heating; Heat insulation (heat insulation in general Fulltext... Hierarchy... Expanded...F16L 59/00)

|  | F01B 31/10 |
· | Lubricating arrangements of steam engines (of fluid machines or engines in general Fulltext... Hierarchy... Expanded...F01M)

|  | F01B 31/12 |
· | Arrangements of measuring or indicating devices (warning apparatus Fulltext... Hierarchy... Expanded...F01B 25/26; measuring instruments or the like per se Fulltext... Hierarchy... Expanded...G01)

|  | F01B 31/14 |
· | Changing of compression ratio

|  | F01B 31/16 |
· | Silencers specially adapted for steam engines (arrangements of exhaust pipes or tubes on steam engines Fulltext... Hierarchy... Expanded...F01B 31/30; gas-flow silencers or exhaust silencers for machines or engines in general Fulltext... Hierarchy... Expanded...F01N)

|  | F01B 31/18 |
· | Draining

|  | F01B 31/20 |
· · | of cylinders

|  | F01B 31/22 |
· | Idling devices, e.g. having by-passing valves

|  | F01B 31/24 |
· · | Disengagement of connections between pistons and main shafts

|  | F01B 31/26 |
· | Other component parts, details, or accessories, peculiar to steam engines

|  | F01B 31/28 |
· · | Cylinders or cylinder covers

|  | F01B 31/30 |
· · | Arrangements of steam conduits

|  | F01B 31/32 |
· · | Arrangements or adaptations of vacuum breakers

|  | F01B 31/34 |
· · | Safety means against water hammer or against the penetration of water (steam traps per se Fulltext... Hierarchy... Expanded...F16T)

|  | F01B 31/36 |
· · · | automatically cutting-off steam supply