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US3334253A Expired / Lapsed US ⏱️ 0.0 years remaining

Magnet traction motors

Assignee: Individual
•
Filing: 1966-04-25
•
Granted: 1967-08-01
•
Expires: 1986-04-25
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Abstract

No abstract record available.

Inventors

  • 👤 Francis A Hill

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 23:56
CPC Classifications
H; H02; H02K; H02K41/00; H02K41/06

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 313 words
A MAGNET TRACTION MOTOR COMPRISING A CASING, A PLURALITY OF HORSE SHOE STATOR MAGNETS, EACH WITH CONCAVE POLES EVENLY SPACED APART AND ARRANGED IN A CIRCLE INSIDE SAID CASING, A PLURALITY OF STATIONARY OUTER GEAR TEETH ARRANGED IN A CIRCLE ON AT LEAST ONE END MEMBER IN SAID CASING, A POWER OUTPUT SHAFT IN SAID CASING, AT LEAST ONE INNER GEAR DRIVING SAID POWER OUTPUT SHAFT AND HAVING FEWER TEETH THAN THE NUMBER OF OUTER GEAR TEETH SO AS TO ROLL AROUND INSIDE SAID OUTER GEAR TEETH SMOOTHLY AND EVENLY AT STEADY ANGULAR VELOCITY FOR ANY GIVEN SPEED WHILE CARRYING AN ARMATURE FASTENED TO IT, SAID ARMATURE HAVING FEWER POLES THAN THE NUMBER OF POLES IN SAID STATOR MAGNETS, SAID STATOR MAGNET POLE FACES JUST CLEARING WITH A SMALL AIR GAP THE POLE FACES OF SAID ARMATURE, AN ELECTRIC ENERGIZING COIL SURROUNDING EACH STATOR MAGNET, AN ELECTRIC CIRCUIT FOR ENERGIZING SAID COIL COMPRISING A LINE STATOR MAGNET, AN ELECTRIC CIRCUIT FOR ENERGIZING SAID COIL COMPRISING A LINE TERMINAL CONNECTED TO A SLIP RING AND ROTATING BRUSH IN A COMMUTATOR, SAID BRUSH CONTACTING A RING OF SECTORS IN SAID COMMUTATOR SUCCESSIVELY, EACH SECTOR CONNECTED TO ONE END OF A STATOR MAGNET COIL, ALL THE OTHER ENDS OF THE STATOR MAGNET COILS BEING CONNECTED TOGETHER AND TO ANOTHER LINE TERMINAL, AN ELECTRIC CURRENT FLOWING THROUGH SAID CIRCUIT TO ENERGIZE SUCCESSIVE MAGNETS ONLY WHILE AT LEAST ONE ARMATURE POLE IS BEING PULLED TOWARDS AT LEAST ONE STATOR POLE AFTER WHICH SAID ROTATING BRUSH DISCONNECTS SAID CURRENT FROM SAID ONE STATOR COIL, WHEREBY SAID ELECTRIC CIRCUIT CAUSES SAID ARMATURE TO REVOLVE AROUND ITS OWN CENTER IN A FIRST DIRECTION WHILE BEING CARRIED AROUND BY SAID INNER GEAR IN A CIRCULAR PATH IN THE OPPOSITE DIRECTION CAUSING SAID ARMATURE AND SAID INNER GEAR TO DRIVE A UNIVERSAL JOINT MEMBER AND ROTATE SAID POWER SHAFT IN SAID FIRST DIRECTION.
Claim 2
Dependent Claim 313 words
A MAGNET TRACTION MOTOR COMPRISING A CASING, A PLURALITY OF HORSE SHOE STATOR MAGNETS, EACH WITH CONCAVE POLES EVENLY SPACED APART AND ARRANGED IN A CIRCLE INSIDE SAID CASING, A PLURALITY OF STATIONARY OUTER GEAR TEETH ARRANGED IN A CIRCLE ON AT LEAST ONE END MEMBER IN SAID CASING, A POWER OUTPUT SHAFT IN SAID CASING, AT LEAST ONE INNER GEAR DRIVING SAID POWER OUTPUT SHAFT AND HAVING FEWER TEETH THAN THE NUMBER OF OUTER GEAR TEETH SO AS TO ROLL AROUND INSIDE SAID OUTER GEAR TEETH SMOOTHLY AND EVENLY AT STEADY ANGULAR VELOCITY FOR ANY GIVEN SPEED WHILE CARRYING AN ARMATURE FASTENED TO IT, SAID ARMATURE HAVING FEWER POLES THAN THE NUMBER OF POLES IN SAID STATOR MAGNETS, SAID STATOR MAGNET POLE FACES JUST CLEARING WITH A SMALL AIR GAP THE POLE FACES OF SAID ARMATURE, AN ELECTRIC ENERGIZING COIL SURROUNDING EACH STATOR MAGNET, AN ELECTRIC CIRCUIT FOR ENERGIZING SAID COIL COMPRISING A LINE STATOR MAGNET, AN ELECTRIC CIRCUIT FOR ENERGIZING SAID COIL COMPRISING A LINE TERMINAL CONNECTED TO A SLIP RING AND ROTATING BRUSH IN A COMMUTATOR, SAID BRUSH CONTACTING A RING OF SECTORS IN SAID COMMUTATOR SUCCESSIVELY, EACH SECTOR CONNECTED TO ONE END OF A STATOR MAGNET COIL, ALL THE OTHER ENDS OF THE STATOR MAGNET COILS BEING CONNECTED TOGETHER AND TO ANOTHER LINE TERMINAL, AN ELECTRIC CURRENT FLOWING THROUGH SAID CIRCUIT TO ENERGIZE SUCCESSIVE MAGNETS ONLY WHILE AT LEAST ONE ARMATURE POLE IS BEING PULLED TOWARDS AT LEAST ONE STATOR POLE AFTER WHICH SAID ROTATING BRUSH DISCONNECTS SAID CURRENT FROM SAID ONE STATOR COIL, WHEREBY SAID ELECTRIC CIRCUIT CAUSES SAID ARMATURE TO REVOLVE AROUND ITS OWN CENTER IN A FIRST DIRECTION WHILE BEING CARRIED AROUND BY SAID INNER GEAR IN A CIRCULAR PATH IN THE OPPOSITE DIRECTION CAUSING SAID ARMATURE AND SAID INNER GEAR TO DRIVE A UNIVERSAL JOINT MEMBER AND ROTATE SAID POWER SHAFT IN SAID FIRST DIRECTION.

References Cited (Backward Citations)

US2250947A Cited
US2561890A Cited
US2761079A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-07-31 1971-01-30 1971-08-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-07-31 1975-01-30 1975-08-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-07-31 1979-01-30 1979-08-01 $7700.00 Window Closed / Lapsed

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