Electrically-driven swimming aid - has foam-filled plastic housing and motor controlled by watertight press button

摘要

The electrically-driven swimming aid has a plastic housing, whose chambers are filled with foam material. Its propulsion mechanism comprises an electric motor, propellers and accumulators, while a watertight press-button on the housing handle closes the circuit via a relay. The plastic can be glass-fibre-reinforced, and polyurethane can be used for the foam. The propellers can be enclosed in cages to prevent injury. The handle can be at the stern and above the propellers, and there can be a carrying handle on an access hatch to the motor. ADVANTAGE - The aid is small, simple, unsinkable and non-polluting, and also usable for rescuing the drowning near river banks.