Various examples of compact piston compressors and vacuum pumps. All fit in the palm of my hand and are designed to weigh between 250-500g. They utilize BLDC motors and are made from die cast magnesium/aluminum and injection molded plastics. Shown as 3D model iterations and physical prototypes.
Single Pressure, Outside Rotating BLDC
Dual (Parallel) Pressure, Inside Rotating BLDC
Dual (Opposed) Pressure/Vacuum, Outside Rotating BLDC
Prototype Assemblies
Justin R. Palmer 