DIFF Subgroup
G04B 11/02 Devices allowing the motion of a rotatable part in only one direction
Introduced: January 1980
Full Title
Full titles differ between systems:
IPC:
Click devices, stop clicks or clutches for winding > Devices allowing the motion of a rotatable part in only one direction
CPC:
Click devices; Stop clicks; Clutches > Devices allowing the motion of a rotatable part in only one direction
CPC subdivides this area 4x more granularly than IPC with 3 additional codes.
3 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- G04B 11/04 Pawl constructions therefor, e.g. pawl secured to an oscillating member actuating a ratchet since 1980 IPC+CPC Available in IPC and CPC