US3320448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic coupling for electric motor
Assignee: Individual
•
Filing: 1964-02-26
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Granted: 1967-05-16
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Expires: 1984-02-26
Abstract
No abstract record available.
Inventors
- 👤 James R Turk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:57
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN AN ELECTRIC MOTOR OF THE TYPE HAVING A STATOR ASSEMBLY, AND A ROTOR AND OUTPUT SHAFT CONCENTICALLY DISPOSED WITHIN A BORE IN SAID STATOR ASSEMBLY; MEANS MOUNTING SAID OUTPUT SHAFT AND ROTOR FOR RELATIVE ROTATIONAL MOVEMENT WITH RESPECT TO EACH OTHER; MEANS OPERATIVE TO MAINTAIN THE RELATIVE POSITIONS OF SAID ROTOR AND OUTPUT SHAFT WHEN SAID ROTOR IS ROTATED AND TRANSMIT A PREDETERMINED AMOUNT OF TORQUE DURING SUCH ROTATION FROM SAID ROTOR TO SAID OUTPUT SHAFT ONLY SO LONG AS THE TORQUE DEMAND ON SAID OUTPUT SHAFT DOES NOT EXCEED SAID PREDETERMINED AMOUNT OF TORQUE, SAID MEANS ALSO BEING OPERATIVE TO ALLOW SAID OUTPUT SHAFT TO COME TO A COMPLETE STANDSTILL DURING CONTINUED ROTATION OF SAID ROTOR AND ELIMINATE TORQUE TRANSMITTAL BETWEEN SAID ROTOR AND OUTPUT SHAFT IN RESPONSE TO THE TORQUE DEMAND EXCEEDING SUCH PREDETERMINED AMOUNT OF TORQUE.
Claim 2
Dependent Claim
140 words
IN AN ELECTRIC MOTOR OF THE TYPE HAVING A STATOR ASSEMBLY, AND A ROTOR AND OUTPUT SHAFT CONCENTICALLY DISPOSED WITHIN A BORE IN SAID STATOR ASSEMBLY; MEANS MOUNTING SAID OUTPUT SHAFT AND ROTOR FOR RELATIVE ROTATIONAL MOVEMENT WITH RESPECT TO EACH OTHER; MEANS OPERATIVE TO MAINTAIN THE RELATIVE POSITIONS OF SAID ROTOR AND OUTPUT SHAFT WHEN SAID ROTOR IS ROTATED AND TRANSMIT A PREDETERMINED AMOUNT OF TORQUE DURING SUCH ROTATION FROM SAID ROTOR TO SAID OUTPUT SHAFT ONLY SO LONG AS THE TORQUE DEMAND ON SAID OUTPUT SHAFT DOES NOT EXCEED SAID PREDETERMINED AMOUNT OF TORQUE, SAID MEANS ALSO BEING OPERATIVE TO ALLOW SAID OUTPUT SHAFT TO COME TO A COMPLETE STANDSTILL DURING CONTINUED ROTATION OF SAID ROTOR AND ELIMINATE TORQUE TRANSMITTAL BETWEEN SAID ROTOR AND OUTPUT SHAFT IN RESPONSE TO THE TORQUE DEMAND EXCEEDING SUCH PREDETERMINED AMOUNT OF TORQUE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |