US3373300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric bearing failure indicator
Assignee: FRANCIS P SULLIVAN
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Filing: 1966-02-04
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Granted: 1968-03-12
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Expires: 1986-02-04
Abstract
No abstract record available.
Inventors
- 👤 Francis P Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:15
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/34; G01R31/343
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A BEARING FAILURE INDICATOR FOR AN A.C. GENERATOR HAVING A HOUSING, A STATOR MOUNTED IN SAID HOUSING AND A ROTOR MOUNTED BY BEARINGS IN SAID HOUSING AND HAVING A PREDETERMINED AIR GAP BETWEEN SAID STATOR AND ROTOR, THE IMPROVEMENT COMPRISING A PAIR OF WINDINGS LOCATED 180* APART IN SLOTS IN SAID STATOR, AN INDICATOR, CIRCUIT MEANS CONNECTING SAID WINDINGS IN PHASE OPPOSITION IN SERIES WITH SAID INDICATOR, SAID WINDING BEING RESPONSIVE TO UNSYMMETRICAL CHANGES IN SAID AIR GAP TO ACTUATE SAID INDICATOR.
Claim 2
Dependent Claim
82 words
A BEARING FAILURE INDICATOR FOR AN A.C. GENERATOR HAVING A HOUSING, A STATOR MOUNTED IN SAID HOUSING AND A ROTOR MOUNTED BY BEARINGS IN SAID HOUSING AND HAVING A PREDETERMINED AIR GAP BETWEEN SAID STATOR AND ROTOR, THE IMPROVEMENT COMPRISING A PAIR OF WINDINGS LOCATED 180* APART IN SLOTS IN SAID STATOR, AN INDICATOR, CIRCUIT MEANS CONNECTING SAID WINDINGS IN PHASE OPPOSITION IN SERIES WITH SAID INDICATOR, SAID WINDING BEING RESPONSIVE TO UNSYMMETRICAL CHANGES IN SAID AIR GAP TO ACTUATE SAID INDICATOR.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |