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+ - Dyson Patents Hint At 'Silent' Hair Dryer->

Submitted by dryriver
dryriver (1010635) writes "The Guardian reports: Whisper it, but it looks like Sir James Dyson – creator of the bladeless fan and bagless vacuum cleaner – is building a silent hair dryer. When Dyson, now 66, became frustrated with his wheelbarrow, he invented the 'Ballbarrow' – replacing the wheel with a ball so it would turn more easily. When he had to vacuum the house, his annoyance at conventional bag cleaners led to the invention of the Dyson cyclone cleaner. Possibly Dyson has become annoyed at the time and especially noise involved in drying his full head of hair. Diagrams that have surfaced at the UK's patents office show that his company has filed patents for 'a hand-held blower with an insulating chamber' – in other words, a hairdryer, which is already being dubbed 'the Hairblade', playing on the name of its Airblade hand dryer. Crucially, he seems to be aiming to make it much quieter than current models – rather as the Dyson bladeless fan is almost silent. Standard hairdryers are extremely loud, reaching up to 75 decibels – as loud as a vacuum cleaner, but held beside your head. The patents, which become public earlier this week, are surprisingly detailed, and show what looks like a hairdryer with an air chamber linked by two smaller cylinders to a smaller base unit. The air would flow through the two cylinders and into the base. The patent publication is a rare slip-up by Dyson, which goes to extraordinary lengths to keep its new products secret. It shrouded the launch of its most recent product – a combined tap-and-hand-dryer – in secrecy, demanding journalists sign non-disclosure agreements. Key among the phrases used in the application in the 56-page application show that it would have 'sound absorbing' and 'vibration absorbing' properties 'tuned to the resonant frequencies of the appliance2. Dyson has also focused on the safety aspect of hairdryers, where anything that gets sucked into the air intake can come into contact with the electrically heated wires which warm up the incoming air and cause a short circuit. It moves the warming element away from the air intake: 'if something is inserted into the appliance, it cannot contact the heater directly,' it says."
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Dyson Patents Hint At 'Silent' Hair Dryer

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