with toothed rotary pistons

Full Title

Rotary-piston machines or engines (with axes of co-operating members non parallel F01C3/00; with the working-chamber walls at least partly resiliently deformable F01C5/00; with fluid ring or the like F01C7/00; rotary-piston machines or engines in which the working fluid is exclusively displaced by, or exclusively displaces, one or more reciprocating pistons F01B13/00) > of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing > of other than internal-axis type > with toothed rotary pistons

Child Classifications

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• F01C 1/16 with helical teeth, e.g. chevron-shaped, screw type
• F01C 1/18 with similar tooth forms (F01C1/16 takes precedence)
• F01C 1/20 with dissimilar tooth forms (F01C1/16 takes precedence)