| 摘要 |
<p>A pneumatic motor (10) is provided that includes an intake chamber (22) in fluid communication with at least one intake channel (28). Each intake channel (28) is in fluid communication with a corresponding cylinder (20), which receives a piston (12) that cycles upwardly and downwardly to rotate a motor axle. A member (30) is placed in each intake channel (28) to seal the corresponding cylinder (20) from each intake channel (28) when compressed fluid in the intake channel (28) has a higher pressure then pressure in the corresponding cylinder (20). An actuator (34) extends downwardly from each piston (12) and has a profile that, during a portion of the upward cycle of the piston (12), causes the actuator (34) to push the member (30) back into each intake channel (28) to allow compressed fluid into each of the corresponding cylinders (20). Exhaust grooves (38) are defined on sections (36) such that during the downward cycle of the piston (12) a seal is broken allowing compressed fluid in the cylinder (20) to bypass the piston (12) an escape through a vent above each cylinder (20).</p> |
