of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member

Full Title

Rotary-piston pumps specially adapted for elastic fluids (with fluid ring or the like F04C19/00; rotary-piston pumps in which the working-fluid is exclusively displaced by one or more reciprocating pistons F04B) > of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing > of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member

Child Classifications

Navigate with arrow keys, Enter to open

• F04C 18/103
• F04C 18/107 with helical teeth
• F04C 18/113 the inner member carrying rollers intermeshing with the outer member