Automatic closing of cupboard doors

Description:
Most marriage couples have one partner who closes cupboard doors, while the other partner leaves them open. This is a cause of frustration that can be eliminated by means of innovation. We seek an inexpensive mechanism to close a cupboard door automatically after a predetermined period like two, five or ten minutes. It should preferably not require electric connections or batteries, and able to be retrofitted to existing cupboard doors.


Technology #786