• All sections
• F - Mechanical engineeringlightingheatingweaponsblasting
• F16D - Couplings for transmitting rotationclutchesbrakes
• F16D 21/04 - Systems comprising a plurality of mechanically-actuated clutches for interconnecting three or more shafts or other transmission members in different ways with a shaft carrying a number of rotatable transmission members, e.g. gears, each of which can be connected to the shaft by a clutching member or members between the shaft and the hub of the transmission member

Patent holdings for IPC class F16D 21/04

Total number of patents in this class: 80

10-year publication summary

Principal owners for this class