Patent Classification Explorer PCE

DIFF Main Group

B23F 9/00

Making gears having teeth curved in their longitudinal direction

Introduced: September 1968

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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B23F 9/003 +1 CPC CPC only CPC only
B23F 9/02 by grinding +1 CPC IPC+CPC Available in IPC and CPC
B23F 9/04 by planing or slotting with reciprocating cutting tools IPC+CPC Available in IPC and CPC
B23F 9/08 by milling, e.g. with helicoidal hob +2 CPC IPC+CPC Available in IPC and CPC