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Sprayers range in size from man-portable units (typically backpacks with spray guns) to trailed sprayers that are connected to a tractor, to self-propelled units similar to tractors with boom mounts of 4–30 feet (1.2–9.1 m) up to 60–151 feet (18–46 m) in length depending on engineering design for tractor and land size.
A manual backpack-type sprayer Space treatment against mosquitoes using a thermal fogger Grubbs Vocational College students spraying Irish potatoes. Pesticide application is the practical way in which pesticides (including herbicides, fungicides, insecticides, or nematode control agents) are delivered to their biological targets (e.g. pest organism, crop or other plant).
In 1970, Kyoritsu claimed to have 'revolutionized' outdoor cleaning with the PB-9, a backpack power blower. The Echo brand of hand-held petrol powered tools including chainsaws, brushcutters, hedge trimmers and leaf blowers are manufactured in Yokosuka and Morioka , with other major plants in Shenzhen , China and Lake Zurich , Illinois .
The man-portable flamethrower consists of two elements—the backpack and the gun. The backpack element usually consists of two or three cylinders. In a two-cylinder system, one cylinder holds compressed, inert propellant gas (usually nitrogen), and the other holds flammable liquid, typically some form of petrochemical. A three-cylinder system ...
Backpack models exist for wildland firefighting and may be solid material such as metal or fiberglass, or collapsible vinyl or rubber bags for ease of storage. Stored pressure water cools burning material by absorbing heat via conversion of liquid water to steam.
Pletz entered the finished backpack project in a design contest sponsored by the Aluminum Company of America and won the prize. [ 4 ] Using the contest award money, [ 4 ] JanSport was founded in 1967 in Seattle, Washington , United States by Murray Pletz, his future wife (they married two years later) [ 3 ] Janis "Jan" Lewis (for whom the ...
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