← Back to Patent Explorer
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
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag