Patent US3429311A successfully refreshed from Google Patents.
Patent US3391291A successfully refreshed from Google Patents.
US3391291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor construction
Assignee: EUGENE G BENSON
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Filing: 1965-08-06
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Granted: 1968-07-02
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Expires: 1985-08-06
Abstract
No abstract record available.
Inventors
- 👤 Eugene G Benson
- 👤 John W O'neil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:10
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/173; H02K5/1732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
AN ELECTRIC MOTOR COMPRISING: A STATIONARY FRAME, A ROTOR HAVING A GENERALLY TUBULAR SHAFT IN SAID FRAME, SAID SHAFT HAVING AN AXIALLY EXTENDING OPENING THERETHROUGH WITH OUTWARDLY FACING CONICALLY TAPERED SIDEWALLS AT OPPOSITE ENDS OF SAID OPENING, SAID FRAME HAVING OPENINGS THEREIN ALIGNED WITH SAID SHAFT, SAID FRAME OPENINGS HAVING OUTWARDLY FACING SHOULDERS, STUB SHAFTS EXTENDING THROUGH SAID FRAME OPENINGS AND HAVING TAPERED ENDS RECEIVED IN SAID TAPERED SIDEWALLS OF SAID OPENING IN SAID SHAFT, ONE OF SAID STUB SHAFTS HAVING AN AXIALLY EXTENDING OPENING THERETHROUGH AND THE OTHER OF SAID STUB SHAFTS HAVING AN AXIALLY EXTENDING THREADED OPENING COMMUNICATING WITH ITS INNER END, ANNULAR BEARINGS FITTED IN SAID FRAME OPENINGS IN ENGAGEMENT WITH SAID SHOULDERS AND SUPPORTING SAID STUB SHAFTS FROM SAID FRAME, SHOULDER MEANS ON AT LEAST ONE OF SAID STUB SHAFTS FOR ENGAGEMENT WITH THE INNER FACE OF ITS ANNULAR SUPPORTING BEARING, AND A ROD EXTENDING THROUGH THE OPENING IN SAID ONE OF SAID STUB SHAFTS AND THREADED INTO THE OPENING ON THE OTHER OF SAID STUB SHAFTS FOR HOLDING SAID SHAFTS TOGETHER.
Claim 2
Dependent Claim
176 words
AN ELECTRIC MOTOR COMPRISING: A STATIONARY FRAME, A ROTOR HAVING A GENERALLY TUBULAR SHAFT IN SAID FRAME, SAID SHAFT HAVING AN AXIALLY EXTENDING OPENING THERETHROUGH WITH OUTWARDLY FACING CONICALLY TAPERED SIDEWALLS AT OPPOSITE ENDS OF SAID OPENING, SAID FRAME HAVING OPENINGS THEREIN ALIGNED WITH SAID SHAFT, SAID FRAME OPENINGS HAVING OUTWARDLY FACING SHOULDERS, STUB SHAFTS EXTENDING THROUGH SAID FRAME OPENINGS AND HAVING TAPERED ENDS RECEIVED IN SAID TAPERED SIDEWALLS OF SAID OPENING IN SAID SHAFT, ONE OF SAID STUB SHAFTS HAVING AN AXIALLY EXTENDING OPENING THERETHROUGH AND THE OTHER OF SAID STUB SHAFTS HAVING AN AXIALLY EXTENDING THREADED OPENING COMMUNICATING WITH ITS INNER END, ANNULAR BEARINGS FITTED IN SAID FRAME OPENINGS IN ENGAGEMENT WITH SAID SHOULDERS AND SUPPORTING SAID STUB SHAFTS FROM SAID FRAME, SHOULDER MEANS ON AT LEAST ONE OF SAID STUB SHAFTS FOR ENGAGEMENT WITH THE INNER FACE OF ITS ANNULAR SUPPORTING BEARING, AND A ROD EXTENDING THROUGH THE OPENING IN SAID ONE OF SAID STUB SHAFTS AND THREADED INTO THE OPENING ON THE OTHER OF SAID STUB SHAFTS FOR HOLDING SAID SHAFTS TOGETHER.
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |