Automatic pneumatic valve reset system

An air valve assembly comprising:

• a plate having a first chamber port, a second chamber port, an exhaust port, and a reset port;
• an air valve body;
• an air valve piston slidably positioned inside the air valve body;
• and
• a cup being moveable between a first exhaust position, a stall position, and a second exhaust position, the cup comprising:
• a cup body having a sliding face as one side of the cup body, the sliding face being adjacent to the plate;
• a gas cavity that extends into the cup body through the sliding face, the gas cavity being fluidly connected to the exhaust port;
• a first pilot slot that extends from the gas cavity and into the cup body through the sliding face, wherein the first pilot slot is fluidly connected to the reset port when the cup is in the stall position;
• a second pilot slot that extends from the gas cavity and into the cup body through the sliding face;
• and
• a protrusion from the cup body that is captured by the air valve piston, wherein the cup moves with the air valve piston.

A positive displacement pneumatic motor comprising:

• a motor body;
• a pneumatic inlet attached to the motor body for receiving compressed gas for the motor;
• a primary piston positioned in the motor body, the primary piston being movable due to force from the compressed air;
• an air valve assembly including a cup that is slidable between a first position, a stall position, and a second position, wherein the position of the cup controls the flow of compressed air in the motor, the air valve assembly comprising:
• a plate having a first chamber port, a second chamber port, an exhaust port, and a reset port;
• wherein the cup comprises:
• a cup body having a sliding face as one side of the cup body, the sliding face being adjacent to the plate;
• a gas cavity that extends into the cup body through the sliding face, the gas cavity being fluidly connected to the exhaust port;
• and
• a first pilot slot that extends from the gas cavity and into the cup body through the sliding face, wherein the first pilot slot is fluidly connected to the reset port when the cup is in the stall position which sends the second signal by providing a fluidly connected pathway for exhausting gas in the air valve assembly;
• and
• a second pilot slot that extends from the gas cavity and into the cup body through the sliding face;
• a limit switch that is activated when the primary piston moves a sufficient distance, the limit switch sending a first pneumatic signal when it is activated to the air valve assembly, wherein the air valve assembly moves the cup between the first and second positions due to the first pneumatic signal;
• and
• wherein the cup sends a second signal to the air valve assembly when the air valve assembly is in the stall position to move the cup to the first-position.