Rotary fluid motor

Claim 1

IN A PRESSURE FLUID OPERATED ROTARY MOTOR INCLUDING A HOUSING SECTION HAVING A ROTOR MOUNTED ECCENTRICALLY WITHIN A MOTOR CYLINDER MEMBER IN SAID HOUSING AND HAVING CIRCUMFERENTIALLY SPACED COMPRESSED FLUID INLET AND OUTLET PASSAGE COMMUNICATING WITH INTERIOR OF SAID MOTOR CYLINDER, SAID INLET PASSAGE HAVING A SOURCE OF PRESSURE FLUID CONNECTED THERETO, AND SAID ROTOR HAVING MEANS ASSOCIATED THEREWITH FOR OPERATIVELY DRIVING A WORK PIECE, THE IMPROVEMENT COMPRISING: A GENERALLY CYLINDRICAL OPENING FORMED IN SAID HOUSING SECTION, A PRESSURE FLUID MOTOR CYLINDER DISPOSED IN SAID CYLINDRICAL OPENING, SAID MOTOR CYLINDER HAVING AN OUTER DIAMETER LESS THAN THE INNER DIAMETER OF SAID CYLINDRICAL OPENING, A ROTOR MEMBER ECCENTRICALLY MOUNTED WITHIN SAID MOTOR CYLINDER AND HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED VANES ADAPTED TO FORM A CONTINUOUS ENGAGEMENT WITH THE INNER SURFACE OF SAID MOTOR CYLINDER WHEN THE SAID ROTOR IS ROTATED RAPIDLY, AND SPRING MEANS ENGAGING SAID MOTOR CYLINDER TO POSITION SAID MOTOR CYLINDER IN A FLUID SEALING AND SLIDING ENGAGEMENT WITH THE PERIPHERY OF SAID ROTOR.