| 摘要 |
A stator comprising a cylindrical permanent magnet and a helical charging coil wound thereon and embedded inside a cylindrical plastic casing, and a reciprocator comprising two cylindrical electromagnets with helical charging coils wound thereon and a helical charging coil embedded inside a hollow cylindrical plastic casing enclosing the stator. The two electromagnets are mounted at opposite ends of the permanent magnet and are axially aligned therewith, with an intervening space to allow for longitudinal movement of the electromagnets. The helical charging coil occupies the electromagnetic field of the permanent magnet. The helical charging coils of the electromagnets are wound in opposite directions so that when one electromagnet attracts one end of the permanent magnet, the other electromagnet repels the opposite end. A reciprocating reverse-circuit switch reverses the circuit through the electromagnets which alternately attract and repel the permanent magnet, and the reciprocator carries the helical discharging coil back and forth through the electromagnetic field of the permanent magnet, discharging by induction the electricity which had been stored in the permanent magnet by the helical charging coil. The device is a simple and efficient means of storing and retrieving electricity in large quantities.
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