Motor utilizing basic factor and having generator function

a c A motor which has an improved energy efficiency, is excellent in practical use and has a generator function at the same time. The motor is provided with a basic factor having working surfaces and on both sides thereof, respectively, and movable members made of a magnetic material and arranged opposite to the working surfaces, respectively. Further, the basic factor is provided with an electromagnet element and permanent magnets arranged on both sides thereof through contact surfaces, respectively, and the working surfaces and the contact surfaces are held opposite to each other through the permanent magnets respectively.