Pump noise attenuator and method thereof

A pump assembly having a longitudinal axis, the pump assembly comprising:

• a casing including a casing outlet passage;
• a pneumatic pump disposed within the casing and having a discharge passage operable to discharge compressed air;
• a tube fluidly connecting the discharge passage and the casing outlet passage, wherein the compressed air flows from the discharge passage through the tube prior to being discharged from the casing outlet passage;
• a motor disposed within the casing, the motor operable to drive the pneumatic pump;
• and
• a motor mount positioned between the casing and the motor,
• wherein the tube defines a first vibration-isolating connection between the pneumatic pump and a first end of the casing, and wherein the motor mount defines a second vibration-isolating connection between the motor and a second end of the casing opposite the first end,
• wherein the motor mount has a body that is coaxial with and surrounds the longitudinal axis such that the body is configured to provide vibration isolation in a radial direction perpendicular to the longitudinal axis.

A pump assembly comprising:

• a casing including a casing outlet passage;
• a pneumatic pump within the casing and having a discharge passage operable to discharge compressed air, wherein the discharge passage is in fluid communication with the casing outlet passage;
• a motor having a longitudinal axis and disposed within the casing and operable to drive the pneumatic pump, wherein a first end of the motor is disposed adjacent a first end of the pneumatic pump;
• a first resilient support positioned adjacent the first end of the pneumatic pump and adjacent the first end of the motor, wherein the first resilient support extends between the pneumatic pump and the casing;
• and
• a second resilient support extending between the motor and the casing, wherein the second resilient support is positioned adjacent a second end of the motor opposite the first end of the motor, and wherein the second resilient support has a body that is coaxial with the longitudinal axis and engages a central portion of the bottom of the motor,
• wherein the first resilient support defines a first vibration-isolating connection between the pneumatic pump and the casing and between the motor and the casing, and wherein the second resilient support defines a second vibration-isolating connection between the motor and the casing, and
• wherein the first and second resilient supports are coaxial and collectively support the pneumatic pump and the motor within the casing.