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Kirby Sentria (2006–2012) Jim Kirby (1884–1971) designed the first Kirby vacuums for George Scott and Carl Fetzer after World War I, although the Kirby name was not used on a vacuum cleaner until the 1930s. [4]
A company by the same name was formed to produce and market Minigrip bags. It turned out to be enormously successful. Box of 1 US gallon (3.7 L) Ziploc bags. At that time, plastic bags were being produced in 25 countries at a line speed of 30 feet per minute, but none were being sold to consumers, because they were too expensive to produce.
The Roots blower is one example of a vacuum pump. A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity. [1]
The Wisconsin Motor Manufacturing Company of Milwaukee, Wisconsin, has been manufacturing internal combustion engines since 1909. In its early years Wisconsin made a full range of engines for automobiles, trucks, heavy construction machines, and maritime use.
The bag may be disposable, or designed to be cleaned and re-used. Bagless: In non-cyclonic bagless models, the role of the bag is taken by a removable container and a reusable filter, equivalent to a reusable fabric bag. Cyclonic separation: A vacuum cleaner employing this method is also bagless. It causes intake air to be cycled or spun so ...
An oil diffusion pump is used to achieve higher vacuum (lower pressure) than is possible by use of positive displacement pumps alone. Although its use has been mainly associated within the high-vacuum range, down to 1 × 10 −9 mbar (1 × 10 −7 Pa), diffusion pumps today can produce pressures approaching 1 × 10 −10 mbar (1 × 10 −8 Pa) when properly used with modern fluids and accessories.