DIFF Subgroup
F16D 25/042 Full Title
Fluid-actuated clutches > in which the fluid actuates an elastic clutching, member, e.g. a diaphragm or a pneumatic tube (F16D25/02 takes precedence; coupling using a pneumatic tube F16D3/82)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.