| 摘要 |
PURPOSE:To increase the power by a method wherein the polarities of electromagnets provided to the outside of a cylinder at both ends of the shaft direction are changed alternately and the reciprocating movement is given to a piston. CONSTITUTION:A piston 16 is composed of manetic disc-plates 18 whose front and back surfaces are magnetized to both N and S polarities at their circumferences and whose outside diameter is slightly smaller than the inner diameter of a cylinder 2 and thin non-magnetic disc-plate 18' whose diameter is smaller than that of the disc-plate 18' and which are made of non-magnetic material. The magnetic disc-plates 18 and the non-magnetic disc-plates 18' are laminated reciporcally and are made one body by a bolt 19. The double-step unevenness is given to the circumference surface of the piston and magnetic fluid 17 is adhered magnetically and simultaneously N and S poles are formed at both ends of the piston. The piston 16 can slide inside the cylinder 2 freely by utilizing the magnetic fluid 17 as the sealing material. Electro-magnets 21 and 22 are provided to the outside of the cylinder 2 at both ends of the shaft direction. The exciting coils of the electromagnets 21 and 22 are excited reciprocally via a terminal C connected to the source 23 by changing-over terminals A ad B at the oscillating frequency of an oscillator circuit, so that the reciprocating movement is given to the piston 16. |
