Patent ID: 8517707

Claim:
A compressed air motor for converting energy from compressed air into mechanical rotary energy, said compressed air motor comprising: a shaft rotor driven by compressed air and operating as a rotary piston, a counterpart rotor, a single piece housing receiving the shaft rotor and the counterpart rotor, the single piece housing, shaft rotor, and counterpart rotor defining a motor work chamber, the single piece housing having an interior surface engaged with both the shaft rotor and counterpart rotor, the single piece housing having a first open end and a second open end, a support stopper positioned in the first open end, and a support nut positioned in the second open end, an inlet connection and an outlet conduit of the motor work chamber for the compressed air or for depressurized waste air, the shaft rotor configured to be coupled to a drive shaft of an assembly that generates mechanical rotary energy, the shaft rotor having a trochoid toothing which cooperates with the counterpart rotor, said counterpart rotor meshing with the trochoid toothing and driving the shaft rotor, each of the shaft rotor and the counterpart rotor having an axis of rotation, the axis of rotation of the shaft rotor forming an angle other than 180° with the axis of rotation of the counterpart rotor thereby causing a corresponding increase or decrease in the volume of the motor work chamber with a corresponding relief of air pressure, and a first roller bearing, at least one of the rotors being supported by the first roller bearing.