DIFF Subgroup
F01D 1/38 of the screw type
Introduced: January 1990
Full Title
Full titles differ between systems:
IPC:
Non-positive-displacement machines or engines, e.g. steam turbines > characterised by non-bladed rotor, e.g. with drilled holes > of the screw type
CPC:
Non-positive-displacement machines or engines, e.g. steam turbines (wit working-fluid flows in opposite axial directions for balancing axial thrust F01D3/02; with other than pure rotation F01D23/00; turbines characterised by their use in special steam systems, cycles, or processes, regulating devices therefor F01K) > characterised by non-bladed rotor, e.g. with drilled holes (F01D1/32 takes precedence; sirens G10K7/00 ) > of the screw type
No child classifications to compare. This is a leaf node in both IPC and CPC.