Motor, pump or compressor with a piston rotatable within a housing

Claim 1

MOTOR, PUMP OR COMPRESSOR COMPRISING A PISTON ROTATABLE WITHIN A HOUSING, SAID HOUSING BEING BOUNDED BY TWO PARALLEL SIDE WALLS AND IN CROSS SECTION HAVING THE SHAPE OF AN EQUIANGULAR TRIANGLE WITH CONVEX OUTWARDLY CURVED SIDES WHICH ARE CONNECTED BY ROUNDED APICES, SAID PISTON BEING AN OVAL DISC LOCATED BETWEEN THEPARALLEL WALLS AND HAVING LONG SIDES CORRESPONDING SUBSTANTIALLY TO THE SHAPE OF THE SIDES OF SAID TRIANGLE AND SHORT SIDES CORRESPONDING SUBSTANTIALLY TO THE SHAPE OF SAID ROUNDED APICES, SEALING MEANS DISPOSED IN THE SHORT SIDES OF SAID PISTON SUBSTANTIALLY IN THE MAJOR AXIS THEREOF, AND MEANS FOR ROTATING THE PISTON WITHIN THE HOUSING SUCH THAT AS THE PISTON MAKES A COMPLETE REVOLUTIN TURNING FROM A POSITION IN WHICH ONE LONG SIDE ABUTS A SIDE OF THE HOUSING TRIANGLE THROUGH SUBSEQUENT POSITIONS IN WHICH EACH SHORT SIDE ALTERNATELY PASSES ALONG A SIDE OF THE TRIANGLE WHILE THE OPPOSITE SHORT SIDE TURNS IN THE OPPOSITE ROUNDED APEX SO AS TO SLIDINGLY ENGAGE SAID SEALING MEANS AGAINST THE TRIANGLE SIDES AND APICES SUBSTANTIALLY PERPENDICULARLY AT ALL TIMES DURING SAID COMPLETE ROTATION.