Rotary two axis expansible chamber pump with pivotal link

A rotary device having a first housing with a rotor and a shaft mounted for rotation within the housing;

• the housing and rotor having a common planar face;
• a second housing, also with a planar face, which is fitted to the first housing in a sealing manner but able to shift the axes of the two housings relatively;
• the second housing having a grooved chamber, the chamber being of rectangular cross section and of constant width and depth;
• the chamber having a chamber surface on an inner hub, an end planar surface, an inner chamber surface on an outer portion of the second housing;
• the chamber being fitted with abutments which seal and subdivide the chamber between the two housings into sub-chambers;
• the rotor face having projections which extend axially into the chamber, which do not seal but which are fitted to engage and drive the abutments around the chamber at rotor velocity;
• the abutments having a shape so as to pivot with respect to the rotor drive projections and to the chamber while always maintaining sealing perpendicular surfaces with walls of the chamber;
• the second housing having inlet and discharge ports through any chamber surface, inner, outer or planar;
• such that the inlet and discharge ports do not communicate;
• the first housing also having two arcuate recessed ports located at the outer periphery of the rotor face, such that the arcuate ports communicate with the second housing ports in order that at no position of the axis shift is fluid trapped inside the sub-chambers of changing volume.