The receiving device (17) is provided with a power take-off device for generating electricity or operating mechanical devices.

A power take off (PTO) device is coupled between the float and the spar for converting their relative motion into useful energy.

A power take off device (PTO) is coupled between the asymmetric float and the spar for converting their relative motion into useful power.

The engine drives the hydraulic pump through the transmission and the power take-off device.

A power take-off (PTO) device, located within the shell, coupled between the shell and the internal oscillator converts their relative motion into electrical energy.

A power takeoff (21, 22) is coupled to the wind turbine for driving a generator (24) electrically connected to the utility grid when exposed to an atmospheric wind condition.

A power-take-off device (50) is pivotally coupled to the car (40) and engages a pair of drive wheels (54) which are coupled to a generator (62).

The advantages of the power take-off device are to increase the transmission power and the durability, obviate requirement of continuous lubrication and minimize the noise during operation.

The second arm coupled to another power take off device in the third hull for transferring relative motion between the third hull and the second arm into electrical energy.

A power take-off apparatus for use on vehicles comprises a pulley (15) connected directly to the end of a vehicle engine crankshaft (14) coaxially with the crankshaft (14).