The present invention relates to an engine or pump called rotary piston engine or pump, comprising a shape of revolution F relative to a delta axis, and rotatably movable about said delta axis in relation to an envelope V, and n cavities distributed over the perimeter of F. In each cavity is housed a rotating roller, characterized in that at least one roller has its center angle determined so as to obtain the closed volumes it delimits, as large as possible.

The present invention relates to an engine or pump called rotary piston engine or pump, comprising a shape of revolution F relative to a delta axis, and rotatably movable about said delta axis in relation to an envelope V, and n cavities distributed over the perimeter of F. In each cavity is housed a rotating roller, characterized in that at least one roller has its center angle determined so as to obtain the closed volumes it delimits, as large as possible.

A vane powered rotor system or a vane powered rotor may utilize a servomotor and may gently extract, meter, and extrude a product under low pressure. The system or rotor may maintain original product properties of the product during portioning or separation of the product. The system or rotor may include a first group of cavities that may become filled with the product, as the vane powered rotor continuously rotates. The product may be discharged through a second group of cavities opposite the first group of cavities. The first and second group of cavities may be arranged laterally about opposing sides of the vane powered rotor.

A vane powered rotor system or a vane powered rotor may utilize a servomotor and may gently extract, meter, and extrude a product under low pressure. The system or rotor may maintain original product properties of the product during portioning or separation of the product. The system or rotor may include a first group of cavities that may become filled with the product, as the vane powered rotor continuously rotates. The product may be discharged through a second group of cavities opposite the first group of cavities. The first and second group of cavities may be arranged laterally about opposing sides of the vane powered rotor.