Industrial designer Arnaud Lapierre came up with the ultimate ‘Do Not Disturb’ sign. His concept doorknob uses a pulley system so that the knob outside can pulled in by twisting the knob inside.

(Source: arnaud-lapierre.com)

Posted 2 years ago
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  21. giovanna-alessandra reblogged this from design-beats and added:
    This is a great idea
  22. tom--blogs reblogged this from design-beats and added:
    Cannot disturb door knob
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