Top IPC subclasses
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1
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F16D
|
18
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couplings for transmitting rotationclutchesbrakes
|
|
2
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B23B
|
9
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turningboring
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|
3
|
F02F
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9
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cylinders, pistons, or casings for combustion enginesarrangements of sealings in combustion engines
|
|
4
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F16J
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8
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pistonscylinderspressure vessels in generalsealings
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|
5
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F16B
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7
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devices for fastening or securing constructional elements or machine parts together, e.g. nails, bol
|
|
6
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F16L
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5
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Pipes; joints or fittings for pipes; supports for pipes, cables or protective tubing; means for thermal insulation in general
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|
7
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F16H
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4
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gearing
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|
8
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F01D
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4
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non-positive-displacement machines or engines, e.g. steam turbines
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|
9
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B43L
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4
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articles for writing or drawing uponaccessories for writing or drawing
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|
10
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F04B
|
3
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positive-displacement machines for liquidspumps
|
|
11
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F16C
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3
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shaftsflexible shaftselements of crankshaft mechanismsrotary bodies other than gearing elementsbeari
|
|
12
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B23C
|
2
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milling
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|
13
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B23Q
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2
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details, components, or accessories for machine tools, e.g. arrangements for copying or controllingm
|
|
14
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B62M
|
2
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rider propulsion of wheeled vehicles or sledgespowered propulsion of sledges or cyclestransmissions
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|
15
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B60B
|
1
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Vehicle wheels; castors; axles for wheels or castors; increasing wheel adhesion
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|
16
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B62K
|
1
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cyclescycle framescycle steering devicesrider-operated terminal controls specially adapted for cycle
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