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Many people use cordless vacuum cleaners, and 'Changeable Inlet Ports'
can be put under the different cleaning conditions, which makes users bothersome.
Main concept of the 'Revolver' is to make it easier to change the inlet ports.
The cylinder that rotates like a revolver pistol helps to change the cordless vacuum cleaner inlet ports.
When you touch the desired inlet ports on the display, the corresponding inlet is automatically inserted.
An-seong, South Korea
Cheol Su Park,