| F | SK | SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
| F01 | USK | ENGINES OR PUMPS |
| F01 | KL | MACHINES OR ENGINES IN GENERAL (combustion engines F02; machines for liquids F03, F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES |
| F01M | UKL | LUBRICATING OF MACHINES OR ENGINES IN GENERAL (lubricating in general F16N); LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING [2] |
| F01M 1/00 | HGR | Pressure lubrication |
| F01M 1/02 | UGR1 | | . | using lubricating pumps (pumps in general F04; lubricating pumps per seF16N) |
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| F01M 1/04 | UGR1 | | . | using pressure in working cylinder or crankcase to operate lubricant-feeding devices |
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| F01M 1/06 | UGR1 | | . | Lubricating systems characterised by the provision therein of crankshafts or connecting-rods with lubricant passageways, e.g. bores (crankshafts, connecting-rods, per seF16C) |
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| F01M 1/08 | UGR1 | | . | Lubricating systems characterised by the provision therein of lubricant-jetting means |
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| F01M 1/10 | UGR1 | | . | 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) |
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| F01M 1/12 | UGR1 | |
| F01M 1/14 | UGR1 | | . | Timed lubrication (F01M 1/08 takes precedence) |
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| F01M 1/16 | UGR1 | | . | Controlling lubricant pressure or quantity (rendering machines or engines inoperative or idling on lubricant-pressure failure F01M 1/22) |
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| F01M 1/18 | UGR1 | |
| F01M 1/20 | UGR2 | | . . | concerning lubricant pressure (measuring fluid pressure in general G01L) |
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| F01M 1/22 | UGR3 | | . . . | rendering machines or engines inoperative or idling on pressure failure |
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| F01M 1/24 | UGR4 | | . . . . | acting on engine fuel system |
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| F01M 1/26 | UGR4 | | . . . . | acting on engine ignition system |
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| F01M 1/28 | UGR4 | | . . . . | acting on engine combustion-air supply |
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| F01M 3/00 | HGR | 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) |
| F01M 3/02 | UGR1 | | . | with variable proportion of lubricant to fuel, lubricant to air, or lubricant to fuel-air mixture |
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| F01M 3/04 | UGR1 | | . | for upper cylinder lubrication only |
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| F01M 5/00 | HGR | Heating, cooling, or controlling temperature of lubricant (arrangement of lubricant coolers in engine cooling system F01P 11/08); Lubrication means facilitating engine starting |
| F01M 5/02 | UGR1 | | . | Conditioning lubricant for aiding engine starting, e.g. heating |
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| F01M 5/04 | UGR2 | | . . | Diluting, e.g. with fuel |
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| F01M 7/00 | HGR | Lubrication means specially adapted for machine or engine running-in |
| F01M 9/00 | HGR | Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M 1/00-F01M 7/00 |
| F01M 9/02 | UGR1 | | . | having means for introducing additives to lubricant |
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| F01M 9/04 | UGR1 | | . | Use of fuel as lubricant |
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| F01M 9/06 | UGR1 | | . | Dip or splash lubrication |
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| F01M 9/08 | UGR1 | |
| F01M 9/10 | UGR1 | | . | Lubrication of valve gear or auxiliaries |
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| F01M 9/12 | UGR1 | | . | Non-pressurised lubrication, or non-closed-circuit lubrication, not otherwise provided for |
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| F01M 11/00 | HGR | Component parts, details, or accessories, not provided for in, or of interest apart from, groups F01M 1/00-F01M 9/00 |
| F01M 11/02 | UGR1 | | . | Arrangements of lubricant conduits |
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| F01M 11/03 | UGR1 | | . | Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means (filters B01D) [3] |
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| F01M 11/04 | UGR1 | | . | Filling or draining lubricant of or from machines or engines |
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| F01M 11/06 | UGR1 | | . | Means for keeping lubricant level constant or for accommodating movement or position of machines or engines |
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| F01M 11/08 | UGR1 | | . | Separating lubricant from air or fuel-air mixture before entry into cylinder (separating in general B01D) |
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| F01M 11/10 | UGR1 | | . | Indicating devices; Other safety devices |
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| F01M 11/12 | UGR2 | | . . | concerning lubricant level (level indicators in general G01F 23/00) |
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| F01M 13/00 | HGR | Crankcase ventilating or breathing [2] |
| F01M 13/02 | UGR1 | | . | by means of additional source of positive or negative pressure [2] |
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| F01M 13/04 | UGR1 | | . | having means for purifying air before leaving crankcase, e.g. removing oil [2] |
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| F01M 13/06 | UGR1 | | . | specially adapted for submersible engines, e.g. of armoured vehicles [2] |
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