Doy Presley

Doy Presley was granted a patent for a Magnetic motor having rotating and reciprocating permanent magnets under United States Patent No. 4196365. The below is the background of his invention as he described it in the patent.

5 1. Field of the Invention

The present invention relates to magnetic motors, and more particularly magnetic motor having rotating and reciprocating permanent magnets.

Description of the Prior Art

A variety of prior art magnetic motors have been developed based on the repulsion forces created by the interaction of similar poles of either electromagnets or permanent magnets.

U.S. Pat. No. 1692761 (Osser) discloses a magnetic motor having a plurality of fixed electromagnets, a rotary disc having iron core inserts and a cam/electrical switch assembly for selectively energizing the electromagnets.

U.S. Pat. No. 3895245 (Bode) discloses a magnetic motor composed of two counter-rotating discs having intermeshing gears and each carrying a plurality of permanent magnets radially arranged with the same poles at the periphery of both discs. A cam and an electrical switch coupled thereto selectively energizing an electromagnet as the two discs rotate.

U.S. Pat. No. 3879622 (Ecklin) discloses a permanent magnet motor utilizing a spring-biased rotating magnetized member positioned between two permanent magnets. A magnetic shield alternately shields and exposes the members to the magnetic field to produce a reciprocating motion.

U.S. Pat. No. 3899703 (kinnison) discloses a permanent magnet motor having movable magnets and a diverter device which is switched between two positions for alternatively diverting the magnetic fields of the stationary magnet. This systematic movement creates a repulsion force which causes the continued movement of the movable magnet.

U.S. Pat. No 4011477 (Scholin) discloses a device for converting variations in magnetic force between two magnets, one rotating and one non-rotating, into reciprocating linear motion. This device includes a motor driven rotatable permanent bar magnet and non-rotatable permanent bar magnet disposed adjacent thereto. The alternate attraction and repulsion resulting from the magnetic forces between the two magnets produce the reciprocating movement.

The following United States Patents disclose related types of permanent magnet motors: U.S. Pat. No. 689483 (Gilman); U.S. Pat. No. 1724446 (Worthington); U.S. Pat. No. 1859643 (Worthington); U.S. Pat. No. 3703653 (Tracy) and U.S. Pat. No. 3935487 (Czernaik)

Refereces Cited

3688136 - Salverda - MAGNETIC MOTORS

Referenced by

4371798 - Magnetic cylinder
4598221 - Permanent magnet motor having rockable rotor magnets
4600849 - Fluid-activated motor having magnetic propulsion
6232689 - Energy extracting mechanism having a magnetic spring
6550767 - Children's toy
6700248 - Non-linear magnetic motion converter
6731035 - Apparatus for generating autogenic energy
6867514 - Permanent magnet motor
6930421 - Torque converter and system using the same
7145276 - Torque converter system and method of using the same
7151332 - Motor having reciprocating and rotating permanent magnets


U.S. Pat. No. 4001477 today has No. 4011477