抄録
A rescue device concept for water accident at river is proposed. This device consists of a plate, a handle and a couple of ropes which connect the plate to the handle. The inclination angle of the plate in water can be controlled by the handle or the rope length difference which produces a thrust force rectangle direction to the rope. Therefore the handle can maneuver the plate position in river intentionally. A float can be delivered to people left in river by this device. Experiments have been achieved successfully. An electro-mechanical device with double winch system also has been manufactured and tested. Finally the plate of this device went across the river and arrived to the opposite bank.
