F01M LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
Introduced: September 1968
Description
F01M covers lubrication systems and components for machines and engines, including oil supply mechanisms, filters, and circulation equipment applicable across various engine types. Within internal-combustion engines, it addresses crankcase ventilation systems designed to manage blow-by gases and maintain proper pressure differentials. This subclass encompasses lubricant distribution methods, cooling systems integrated with lubrication, and components such as oil pumps, regulators, and splash lubrication systems. Related aspects of engine design covered in adjacent classes (F01B–F01N) address specific engine types and combustion processes, while general fluid handling appears in other F-series sections.
Title
Titles differ between systems:
IPC: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING
CPC: LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
Full Title
Full titles differ between systems:
LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING
LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
Additional Content IPC
Glossary
Lubrication Apparatus, arrangements or methods for introducing or applying a thin layer of a discrete lubricant between two or more relatively-moving adjacent solid surfaces of a device or apparatus, for the specific purpose of reducing friction, heat or wear between the adjacent surfaces. Lubricant Any fluid (e.g. water, oil), fluent material (e.g. particulate graphite), semi-fluid material (e.g. oil with thickener), or semisolid material (e.g. grease), or any mixture of such types of substance, which is used for the specific purpose of lubrication. Engine engines 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. Pump pumps A device for continuously raising, forcing, compressing or exhausting fluid by mechanical or other means. Thus, this term includes fans or blowers. This term also includes methods of operation, unless otherwise specifically provided for. Machine machines A device which could equally be an engine or a pump, but not a device which is restricted to an engine or one which is restricted to a pump. Positive displacement 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 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. Working fluid The driven fluid in a pump or the driving fluid in an engine. The working fluid may be in a gaseous state, i.e. compressible, or liquid. In the former case coexistence of two states is possible.
Limiting references
Arrangement of lubricant coolers in engine cooling systems
Application references
Lubrication of steam engines Lubrication of rotary-piston or oscillating-piston machines or engines Lubrication of non-positive displacementmachines or engines, e.g. steam turbines Lubrication of gas-turbine plants Lubrication of cylinders of combustion engines Lubrication of pumps for elastic fluids Lubrication of rotary-piston or oscillating-piston pumps for elastic fluids Lubrication of non-positive displacementpumps
Of 8 combined children, 7 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
4 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F01M 11/00 Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00 +2 CPC IPC+CPC Available in IPC and CPC
- F01M 3/00 Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture (separating lubricant from air or fuel-air mixture before entry into cylinder F01M11/08) IPC+CPC Available in IPC and CPC
- F01M 5/00 Heating, cooling, or controlling temperature of lubricant (arrangement of lubricant coolers in engine cooling system F01P11/08); Lubrication means facilitating engine starting +4 CPC IPC+CPC Available in IPC and CPC
- F01M 7/00 Lubrication means specially adapted for machine or engine running-in IPC+CPC Available in IPC and CPC
- F01M 9/00 Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F01,2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 8,496
- UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
- SAFRAN AIRCRAFT ENGINES FR 5,503
- TOYOTA MOTOR CORPORATION 4,556
- SIEMENS DE 3,992
- HYUNDAI MOTOR COMPANY KR 3,929
- RAYTHEON TECHNOLOGIES CORPORATION US 3,534
- FORD GLOBAL TECHNOLOGIES US 3,407
- TOYOTA MOTOR CORPORATION JP 3,042
- WEICHAI POWER COMPANY 2,888
Top Applicants (CPC)
Class F01,2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 9,989
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
- SAFRAN AIRCRAFT ENGINES FR 6,248
- HYUNDAI MOTOR COMPANY KR 4,530
- SIEMENS DE 4,461
- FORD GLOBAL TECHNOLOGIES US 4,029
- RAYTHEON TECHNOLOGIES CORPORATION US 3,947
- TOYOTA MOTOR CORPORATION JP 3,734
- GE (GENERAL ELECTRIC COMPANY) 3,415
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063