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The rotolliptic mechanism was invented by Greg Montie and is a modern device for moving fluids efficiently at a high flow rate and at pressure. The rotolliptic device is a rotary positive displacement device that draws in and discharges fluid continually, without the need for valves. The mechanism operates based on a principle that an ellipse of a specific geometry, rotating about its centre at half the rate as its circular orbit maintains a contact vertex on the housing. This allows for a separation of intake and outlet regions and facilitates a movement of fluid trapped between the rotor and the housing. This design produces a cyclical continuous flow with no valves. .
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