Patent ID: 6779991
Filing Date: 2004-08-24
Classification: F04B

Abstract:
An axial piston pump for use with a nebulizer having a cylinder and piston disposed along a piston axis and an electromagnet having a stator containing a wire coil driving an armature connected to the piston to reciprocate the piston within the cylinder along the piston axis and pass air through a valve head having an intake port and an exhaust port in communication with the cylinder and respective inlet and outlet ports of a two-piece housing, the housing includes a first housing part having an axially extending exterior wall defining an interior cavity containing the cylinder and having an axially extending interior partition wall that mates with the valve head to define an exhaust chamber isolating air at the exhaust port from air at the intake port and, wherein the first housing part further defines an outlet in communication with the exhaust chamber and the outside of the housing.