Classification opinions
… a piston and blades on a thick tube (handgrip) and operated by compressed air triggered by the user's thumb and … : 2014 … 2. Pneumatic rake , of base metal, non-rotary, fan-shaped, used for harvesting olives, almonds and pistachios. … It is powered by air from a compressor. It can be operated in the hand without the use of accessories, but is …