Ball cages

Introduced: September 1968

Full Title

Parts of bearings; Special methods for making bearings or parts thereof > Parts of ball or roller bearings > Ball cages

CPC subdivides this area 3x more granularly than IPC with 8 additional codes.

8 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

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F16C 33/3806 CPC only CPC only
F16C 33/3812 CPC only CPC only
F16C 33/3818 CPC only CPC only
F16C 33/3825 CPC only CPC only
F16C 33/3831 CPC only CPC only
F16C 33/3837 +3 CPC CPC only CPC only
F16C 33/3887 CPC only CPC only
F16C 33/3893 CPC only CPC only
F16C 33/40 for multiple rows of balls +1 CPC IPC+CPC Available in IPC and CPC
F16C 33/41 comb-shaped +2 CPC IPC+CPC Available in IPC and CPC
F16C 33/42 made from wire or sheet metal strips (F16C33/40, F16C33/41 take precedence) +1 CPC IPC+CPC Available in IPC and CPC
F16C 33/44 Selection of substances (F16C33/40, F16C33/41 take precedence) +1 CPC IPC+CPC Available in IPC and CPC

Class F16,2013–2023, worldwide · Source: EPO PATSTAT

Class F16,2013–2023, worldwide · Source: EPO PATSTAT