Quieted front exhaust motor

A pneumatic motor comprising:

• a rotor housing defining a cavity, a first intake, and a second intake, the first intake and the second intake in fluid communication with the cavity, the rotor housing configured to receive compressed air from either the first intake or the second intake;
• a rotor housed by the rotor housing, the rotor including an output shaft such that the rotor is configured to rotate about an axis defined by the output shaft, the rotor including a plurality of vanes that extend radially from the axis, the rotor configured to rotate when the compressed air exerts work against one or more vanes among the plurality of vanes, the traversal of compressed air through the pneumatic motor defines an airflow;
• an endplate coupled to the rotor housing, the endplate configured to receive the output shaft through the endplate, the endplate defining a channel in fluid communication with the cavity for directing the airflow from the rotor housing;
• and
• a wear plate disposed between the endplate and the rotor housing, the wear plate defining an exhaust port, wherein the airflow is configured to pass through the exhaust port from the cavity to the channel,
• wherein the exhaust port of the wear plate is biased such that a first distance traversed by an airflow measured from the first intake to the exhaust port is greater than a second distance traversed by an airflow measured from the second intake to the exhaust port, resulting in a power output of the pneumatic motor that is greater when the airflow traverses the first distance than when the airflow traverses the second distance, and
• wherein the wear plate is reversible, such that, when the wear plate is reversed, the first distance traversed by the airflow measured from the first intake to the exhaust port is less than the second distance traversed by the airflow measured from the second intake to the exhaust port, resulting in a power output of the pneumatic motor that is greater when the airflow traverses the second distance than when the airflow traverses the first distance.

A pneumatic wrench comprising:

• a housing;
• and
• a pneumatic motor housed by the housing, the pneumatic motor including:
• a rotor housing defining a cavity and an intake, the intake in fluid communication with the cavity, the rotor housing configured to receive compressed air from the intake,
• a rotor housed by the rotor housing, the rotor including an output shaft such that the rotor is configured to rotate about an axis defined by the output shaft, the rotor including a plurality of vanes that extend radially from the axis, the rotor configured to rotate when the compressed air exerts work against one or more vanes among the plurality of vanes, the traversal of compressed air through the pneumatic motor defines an airflow,
• an endplate coupled to the rotor housing, the endplate configured to receive the output shaft through the endplate, the endplate defining a channel in fluid communication with the cavity for directing the airflow from the rotor housing, and
• a wear plate disposed between the endplate and the rotor housing, the wear plate defining an exhaust port, wherein the airflow is configured to pass through the exhaust port from the cavity to the channel, wherein the airflow measured from the intake to the exhaust port defines a first distance,
• wherein the wear plate is swappable for a second wear plate, wherein the airflow measured from the intake to an exhaust port of the second wear plate defines a second distance, the second distance being either greater or less than the first distance, and
• wherein the second wear plate is reversible, such that, when the second wear plate is reversed, the airflow measured from the intake to the exhaust port of the second wear plate defines a third distance, the third distance being either greater or less than the second distance.