| 1/00 | Pressure lubrication |
| 1/02 | Pressure lubrication using lubricating pumps |
| 1/04 | Pressure lubrication using pressure in working cylinder or crankcase to operate lubricant-feeding devices |
| 1/06 | Pressure lubrication Lubricating systems characterised by the provision therein of crankshafts or connecting-rods with lubricant passageways, e.g. bores |
| 1/08 | Pressure lubrication Lubricating systems characterised by the provision therein of lubricant-jetting means |
| 1/10 | Pressure lubrication Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters (mounting of, connecting of, or constructional details of lubricant purifying means F01M 11/03) |
| 1/12 | Pressure lubrication Closed-circuit lubricating systems not provided for in groups F01M 1/02-F01M 1/1 |
| 1/14 | Pressure lubrication Timed lubrication (F01M 1/08 takes precedence) |
| 1/16 | Pressure lubrication Controlling lubricant pressure or quantity |
| 1/18 | Pressure lubrication Indicating or safety devices (concerning lubricant level F01M 11/06, F01M 11/12) |
| 1/20 | Pressure lubrication Indicating or safety devices (concerning lubricant level F01M 11/06, F01M 11/12) concerning lubricant pressure |
| 1/22 | Pressure lubrication Indicating or safety devices (concerning lubricant level F01M 11/06, F01M 11/12) concerning lubricant pressure rendering machines or engines inoperative or idling on pressure failure |
| 1/24 | Pressure lubrication Indicating or safety devices (concerning lubricant level F01M 11/06, F01M 11/12) concerning lubricant pressure rendering machines or engines inoperative or idling on pressure failure acting on engine fuel system |
| 1/26 | Pressure lubrication Indicating or safety devices (concerning lubricant level F01M 11/06, F01M 11/12) concerning lubricant pressure rendering machines or engines inoperative or idling on pressure failure acting on engine ignition system |
| 1/28 | Pressure lubrication Indicating or safety devices (concerning lubricant level F01M 11/06, F01M 11/12) concerning lubricant pressure rendering machines or engines inoperative or idling on pressure failure acting on engine combustion-air supply |
| 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 F01M 11/08) |
| 3/02 | 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 F01M 11/08) with variable proportion of lubricant to fuel, lubricant to air, or lubricant to fuel-air mixture |
| 3/04 | 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 F01M 11/08) for upper cylinder lubrication only |
| 5/00 | Heating, cooling, or controlling temperature of lubricant (arrangement of lubricant coolers in engine cooling system F01P 11/08); Lubrication means facilitating engine starting |
| 5/02 | Heating, cooling, or controlling temperature of lubricant (arrangement of lubricant coolers in engine cooling system F01P 11/08); Lubrication means facilitating engine starting Conditioning lubricant for aiding engine starting, e.g. heating |