John Pruyn, PE
Senior Mechanical Engineer

Washington Office


  • BSME, University of Cincinnati
  • MSME University of Cincinnati, Cincinnati, Ohio - Loop Gain-Phase Optimization in Quantitative Feedback Theory


  • Licensed PE in Washington
  • 1 U.S. patent:
    • 6196773, Tool with control of a fluid axis using reference information from other tool axes
  • Patent Application - PCT/US2012/044192, Apparatus for actuating a lift plate of a media tray

Interests / Obsessions

  • Family
  • Volunteering for MESA
  • Welded Sculpture
  • Microcontrollers

Favorite Quote

  • The trick is to combine your waking rational abilities with the infinite possibilities of your dreams. Because, if you can do that, you can do anything.
  • " The Waking Life
  • Expertise

    • 17 years across a variety of fields including energy, digital printing, industrial automation and life sciences.
    • Digital printing systems with emphasis in high volume product design of media handling and mechanisms including injection molded plastic and progressive die sheet metal parts.
    • Transient thermal analysis for a thermal depolymerization process
    • Linear Fresnel reflector based solar concentrating systems
    • Horizontal axis wind turbine and solar PV and thermal tracking device
    • Endo-surgical instrument development, research equipment (QPCR), lab on chip manufacturing tools
    • Thermal process control for a continuous plating line, 2 years production machine tools; 3 years food packaging automation


      • Development of machines using experimental and analytical methods. 
      • Kinetics and kinematics
      • Dynamic systems and control
      • FEA
      • DFM
      • Injection molding
      • Welding, 
      • Prog die sheet metal
      • SolidWorks
      • CoCreate/Creo Elements