Permanent magnet field diverted to do useful work

• US 4,542,361 A
• Filed: 05/21/1984
• Issued: 09/17/1985
• Est. Priority Date: 05/21/1984
• Status: Expired due to Fees

• Current Assignee: Maghemite Incorporated
• Original Assignee: Maghemite Incorporated
• Inventors: Cavanagh, Patrick E.
• Primary Examiner(s): Harris, George
• Application Number:
  US06/612,242
• Time in Patent Office: 484 Days
• Field of Search: 335/229, 335/230, 335/289, 335/290, 335/291, 335/294
• US Class Current: 335/230
• CPC Class Codes: H01F 7/0257 Lifting, pick-up magnetic objects
• CPC Class Codes: H01F 7/064 Circuit arrangements for actuating electromagnets circuit arrangements for obtaining special operating characteristics H01F7/18; driving circuits for electromagnets making use of a switching regulator H01H47/325
• CPC Class Codes: H02K 25/00 DC interrupter motors or generators
• CPC Class Codes: H02K 33/00 Motors with reciprocating, oscillating or vibrating magnet, armature or coil system arrangements for handling mechanical energy structurally associated with motors H02K7/00, e.g. H02K7/06
• CPC Class Codes: H02K 33/10 wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures

Abstract

Permanent magnets are used to perform useful work. The field of a first permanent magnet is diverted by electromagnetic coils to such a low value that another opposing permanent magnet can approach the first magnet without the application of undue force. The field in the first magnet is restored to act on the second magnet so as to repel it. The force which results may be harnessed to effect reciprocal or rotary motion.

Claims

1. A method of manipulating permanent magnets, which comprises:

diverting the field of a first permanent magnet by an opposing magnetic field sufficient to permit a second opposing permament magnet to approach the first permanent magnet without the application of undue force,

restoring the intensity of the field of the first permanent magnet to act on the second permanent magnet to repel the same, and

harnessing the force resulting from the repulsion of the second magnet by the first magnet on restoring the field to do useful work.

2. The method of claim 1 wherein said force resulting from the repulsion is converted to reciprocal motion.

3. The method of claim 1 wherein said force resulting from the repulsion is converted to rotary motion.

4. A magnet machine comprising:

a first strong permanent magnet,

elongate upright side arms of ferromagnetic material operatively associated with said first magnet to establish opposite poles at the ends of said side arms

electromagnetic coils mounted on each of said side arms between the permanent magnet and the lower end of the arms,

a magnetic cross-piece traversing the lower ends of the arms, said cross-piece being connected to a pump piston, and

means for cyclically energizing and de-energizing said electromagnetic coils to generate, upon energizing, a magnetic field to oppose the field of the permanent magnet at the lower end of the arms, thereby to diminish the effect thereof and to cause said cross-piece to fall away from the lower ends so as to move the pump piston in a downward direction, and to restore, upon de-energizing, the magnetic field of the permanent magnet at the lower end of the arms, to cause said cross-piece to be attracted to the lower ends so as to move the pump piston in an upward direction, whereby the resulting repetitive reciprocal movement of the cross-piece effects a pumping action.

5. The magnet machine of claim 4, wherein said permanent magnet comprises a plurality of elongate rectangular strontium ferrite magnets joined together in side-abutting relationship.

6. The magnet machine of claim 4, wherein said coils are located between the permanent magnet and the lower ends of the arms, the lower ends of the arms are traversed by a magnetic cross-piece attracted to the lower ends, and generation of said magnetic field in said coil causes said cross-piece to fall away from the lower ends as a result of diminution of the field of the permanent magnet thereat.

8. The magnet machine of claim 10 wherein said side arms are oriented radially with respect to the centre of rotation of said rotary arm.

9. The magnet machine of claim 10 wherein said side arms are oriented tangentially with respect to the centre of rotation of said rotary arm.

10. The magnet machine of claim 5 wherein said means for cyclically energizing and de-energizing said electromagnetic coils comprises an electrical circuit comprising:

a d.c. source of electrical current,

a first lead connected from said d.c. source to one of said coils, and a second lead connected to said cross-piece,

series connection between said electrical coils, and

an electrical connection between the other of the coils and its associated arm, whereby said coils are energized when an electrical circuit is completed upon engagement between said cross-piece and said arms and said coils are de-energized when said cross-piece is disengaged from said arms and the electrical circuit is broken.

7. A magnet machine, comprising:

a generally H-shaped magnet assembly comprising;

a first strong permanent magnet,

elongate side arms of ferromagnetic material establishing opposite poles at the end thereof,

and electromagnetic coils mounted on each of said arms between the pemanent magnet and one end of the side arm;

means for energizing and de-energizing said electromagnetic coils to generate a magnetic field to oppose the field of the permanent magnet at the one end of the arms, thereby to diminish the effect thereof, and

a second permanent magnet mounted at the radial extremity of a rotary arm for movement in the arc of a circle passing between said one ends of the arms, whereby, when said coils are energized to diminish the magnetic field of said first permanent magnet, movement of said second magnet towards and into the gap between the side arms is permitted and, when said coils are de-energized, the restoration of the magnetic field of said first permanent magnet which results causes said second permanent magnet to be repulsed, whereby rotary motion of the second permanent magnet results.