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2. Central vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Central_vacuum_cleaner

   Cyclonic and filtered central vacuum systems are the two main types of central vacuums, differentiated by the method used to separate dirt and dust from the incoming airstream. [ 4 ] True cyclonic cleaners do not use filtration bags, instead separating the dirt and dust into a detachable cylindrical collection vessel or bin.

3. Dirt Devil - Wikipedia

   en.wikipedia.org/wiki/Dirt_devil

   Dirt Devil is a brand name originally introduced (or debuted) in 1981 by the Royal Appliance Manufacturing Co, an American vacuum cleaner and floor care company. The company and the brand are now owned by TTI Floor Care North America, a subsidiary of Hong Kong–based Techtronic Industries, who also own Oreck, Vax, and Hoover North America.

4. List of vacuum cleaners - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_cleaners

   This is a list of vacuum cleaners and robot vacuum cleaner manufacturers. A vacuum cleaner is a device that uses an air pump to create a partial vacuum to suck up dust and dirt, usually from floors, and optionally from other surfaces as well. The dirt is gathered by either a dustbag or a rigid cartridge, which may be emptied and reused.

5. Vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Vacuum_cleaner

   The power unit of a typical central vacuum cleaner for residential use. Central vacuum cleaners, also known as built-in or ducted, are a type of canister/cylinder model which has the motor and dirt filtration unit located in a central location in a building, and connected by pipes to fixed vacuum inlets installed throughout the building.

6. David Oreck - Wikipedia

   en.wikipedia.org/wiki/David_Oreck

   By 1965, the firm was also the exclusive wholesaler for RCA products in Louisiana. His 8 pounds (3.6 kg) appliance was a third the weight of other machines available. Competitors used this to criticize Oreck's vacuum cleaner's effectiveness and durability. Oreck decided to first market to hotels where light weight would be a selling point. [6 ...

7. Dragline excavator - Wikipedia

   en.wikipedia.org/wiki/Dragline_excavator

   Built by Bucyrus-Erie in 1969, Big Muskie was the world's largest ever dragline, being 487 ft (148 m) in length, weighing some 13,500 short tons (12,247 t), and hoisting a 220 cu yd (168.2 m 3) bucket that could move 325 short tons (295 t) of material at a pass.