Twin involutes put air into a spin

Article Abstract:

UK-based oilfield engineering firm BHR developed a radical new vortex separation system which vacuum cleaner manufacturer Hoover has used in the design of its new filterless cleaner. BHR initially developed the cyclonic system to separate oil and gas at the point of extraction, although the design team soon realized the potential for use in the vacuum cleaner market. Dirt and air sucked up by the Hoover cleaner is passed through three stages of cleaning, making it one of the most efficient cleaners on the market.

Vacuum cleaners, Hydraulic engineering, Hoover Machine Co.

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Back in the eighties

Article Abstract:

Issues concerning the events and designs of the 1980s are presented, with reference to the Channel Tunnel, the Space Shuttle, Rubik's cube, and the designs of Clive Sinclair.

Technological innovations, 1980s (Decade) AD, Sinclair, Clive

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