Other attributes
Child Classification
Classification Type
Parent Classification
No article content yet.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them