Expansion mandrels

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Chucks; Expansion mandrels; Adaptations thereof for remote control > Expansion mandrels

CPC:

Chucks ; Expansion mandrels; Adaptations thereof for remote control (faceplates B23Q1/50; rotary devices holding by magnetic and/or electrical force acting directly on work B23Q3/152) > Expansion mandrels

CPC subdivides this area 7x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

Child Classifications

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B23B 31/4006 +3 CPC CPC only CPC only
B23B 31/404 +3 CPC CPC only CPC only
B23B 31/4073 CPC only CPC only
B23B 31/408 CPC only CPC only
B23B 31/4086 CPC only CPC only
B23B 31/4093 CPC only CPC only
B23B 31/42 characterised by features relating primarily to remote control of the gripping means IPC+CPC Available in IPC and CPC