US3169203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Square wave pulse generator
Assignee: International Business Machines Corp
•
Filing: 1961-03-28
•
Granted: 1965-02-09
•
Expires: 1981-03-28
Abstract
No abstract record available.
Inventors
- 👤 Audrew J Lavin
- 👤 Wendell J Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:20
CPC Classifications
H; H02; H02K; H02K39/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
A SQUARE WAVE GENERATOR COMPRISING: A STATOR HAVING A PREDETERMINED NUMBER OF ARCUATELY SPACED CLOSED WINDING SLOTS, EACH SLOT TERMINATING AT ONE END IN CLOSE PROXIMITY TO THE INNER PERIPHERY OF SAID STATOR TO PROVIDED A NUMBER OF OF VIRTUAL STATOR TEETH EQUAL IN NUMBER TO SAID PREDETERMINED NUMBER OF WINDING SLOTS, SAID VIRTUAL STATOR TEETH BEING SEPARATED BY A SECTIONAL THICKNESS WHICH BECOMES MAGNETICALLY SATURATED WITHOUT SHORTING THE MAGNETIC FLIELDS OF SAID VIRTUAL STATOR TEETH; A ROTATABLE ROTOR HAVING POLARIZED MAGNETIC POLES EQUAL TO HALF THE NUMBER OF VIRTUAL STATOR TEETH, SAID POLES HAVING SUBSTANTIALLY THE SAME WIDTH AS SAID VIRTUAL STATOR TEETH, THE WIDTH OF SAID POLES AND VIRTUAL STATOR TEETH BEING SUBSTANTIALLY EQUAL TO ONE-HALF THE PITCH; AND A NUMBER OF COILS EQUAL TO HALF THE NUMBER OF SAID VIRTUAL STATOR TEETH, EACH COIL THREADING A PAIR OF WINDING SLOTS SO AS TO EMBRACE A PORTION OF THE STATOR BETWEEN SAID PAIR OF WINDING SLOTS WHEREBY THE MAGNETIC CIRCUIT FOR THE FLUX LINKING SAID COILS HAS SUBSTANTIALLY THE SAME RELUCTANCE OF THE MAGNETIC CURCUIT FOR THE NON-LINKING FLUX SO THAT A VOLTAGE WAVE FROM WITH DISCONTINUTIES IS GENERATED IN EACH COIL DUE TO THE TIME RATE OF CHANGE OF FLUX LINKAGES AS SAID ROTOR AND STATOR RELATIVELY ROTATE UNIFOMLY.
Claim 2
Dependent Claim
212 words
A SQUARE WAVE GENERATOR COMPRISING: A STATOR HAVING A PREDETERMINED NUMBER OF ARCUATELY SPACED CLOSED WINDING SLOTS, EACH SLOT TERMINATING AT ONE END IN CLOSE PROXIMITY TO THE INNER PERIPHERY OF SAID STATOR TO PROVIDED A NUMBER OF OF VIRTUAL STATOR TEETH EQUAL IN NUMBER TO SAID PREDETERMINED NUMBER OF WINDING SLOTS, SAID VIRTUAL STATOR TEETH BEING SEPARATED BY A SECTIONAL THICKNESS WHICH BECOMES MAGNETICALLY SATURATED WITHOUT SHORTING THE MAGNETIC FLIELDS OF SAID VIRTUAL STATOR TEETH; A ROTATABLE ROTOR HAVING POLARIZED MAGNETIC POLES EQUAL TO HALF THE NUMBER OF VIRTUAL STATOR TEETH, SAID POLES HAVING SUBSTANTIALLY THE SAME WIDTH AS SAID VIRTUAL STATOR TEETH, THE WIDTH OF SAID POLES AND VIRTUAL STATOR TEETH BEING SUBSTANTIALLY EQUAL TO ONE-HALF THE PITCH; AND A NUMBER OF COILS EQUAL TO HALF THE NUMBER OF SAID VIRTUAL STATOR TEETH, EACH COIL THREADING A PAIR OF WINDING SLOTS SO AS TO EMBRACE A PORTION OF THE STATOR BETWEEN SAID PAIR OF WINDING SLOTS WHEREBY THE MAGNETIC CIRCUIT FOR THE FLUX LINKING SAID COILS HAS SUBSTANTIALLY THE SAME RELUCTANCE OF THE MAGNETIC CURCUIT FOR THE NON-LINKING FLUX SO THAT A VOLTAGE WAVE FROM WITH DISCONTINUTIES IS GENERATED IN EACH COIL DUE TO THE TIME RATE OF CHANGE OF FLUX LINKAGES AS SAID ROTOR AND STATOR RELATIVELY ROTATE UNIFOMLY.
References Cited (Backward Citations)
US522580A
Cited
US1396521A
Cited
US1504145A
Cited
US1898728A
Cited
US2432117A
Cited
US2871384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |