The application of a Quasiturbine engine in portable machines would benefit users tremendously because a Quasiturbine is:

• Lighter than a piston engine for the same power output [about 4X lighter]
• Quieter than an internal combustion piston engine
• Vibration free
• Note that daily exposure to hand and arm vibration by workers who use vibrating tools can cause physical damage to the hands and arms.
  see: http://www.ohcow.on.ca/resources/handbooks/havs/HAVS.htm

• Chainsaws
• Run as a pneumatic engine
• runs under all conditions
• in heavy smoke
• under water
• Exhaust air can be used to supply breathable air/oxygen for civil defense personnel (fire, police, military etc.)
  
• Mowers
• Hedge/Grass Trimmers
• Brushcutters
  
• Branch Cutters
• Shredders
• Shredder chippers
• Sprayers
• Tillers
• Snowblowers
• Portable High Pressure Pumps
• Pressure Washers
• Power Blowers
• Portable Cutters
• Portable Generators
• Portable Pumps
  
• Log splitters
• Earth Drills, Earth Augers and Mining drills
• Cut-off Saws & Circlar Saws