Patent US4501382A successfully refreshed from Google Patents.
Patent US3400285A successfully refreshed from Google Patents.
US3400285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hysteresis synchronous motor and improved shaft sub-assembly therefor
Assignee: Individual
•
Filing: 1965-12-20
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Granted: 1968-09-03
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Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Willard E Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:57
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/08; H02K7/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN ELECTRICALLY-OPERATED, HIGH-SPEED ROTATING ASSEMBLY COMPRISING: AN ELONGATE HOUSING HAVING ENDPLATES AT OPPOSITE ENDS THEREOF AND THE INTERIOR DIVIDED INTO A MOTOR COMPARTMEMT AND A MIRROR COMPARTMENT ARRANGED IN END-TO-END COMMUNICATING RELATION, MEANS FORMING A STATUS STRUCTURE FOR A SYNCHRONOUS MOTOR MOUNTED IN THE MOTOR COMPARTMENT, SHAFT BEARINGS MOUNTED IN OPPOSITE ENDS OF THE HOUSING, A UNITARY SHAFT JOURNALLED FOR ROTATION WITHIN THE SHAFT BEARINGS, A ROTOR FORMED OF A MAGNETIC MATERIAL CARRIED BY THE SHAFT FOR ROTATION THEREWITH INSIDE THE STATOR IN RESPONSE TO A REVOLVING FLUX ACTING THEREON, AND AT LEAST ONE MIRROR HAVING A PLANE POLISHED REFLECTING SURFACE CARRIED BY THE SHAFT FOR ROTATION THEREWITH INSIDE THE MIRROR COMPARTMENT IN CLOSCOUPLED RELATION TO THE ROTOR.
Claim 2
Dependent Claim
118 words
AN ELECTRICALLY-OPERATED, HIGH-SPEED ROTATING ASSEMBLY COMPRISING: AN ELONGATE HOUSING HAVING ENDPLATES AT OPPOSITE ENDS THEREOF AND THE INTERIOR DIVIDED INTO A MOTOR COMPARTMEMT AND A MIRROR COMPARTMENT ARRANGED IN END-TO-END COMMUNICATING RELATION, MEANS FORMING A STATUS STRUCTURE FOR A SYNCHRONOUS MOTOR MOUNTED IN THE MOTOR COMPARTMENT, SHAFT BEARINGS MOUNTED IN OPPOSITE ENDS OF THE HOUSING, A UNITARY SHAFT JOURNALLED FOR ROTATION WITHIN THE SHAFT BEARINGS, A ROTOR FORMED OF A MAGNETIC MATERIAL CARRIED BY THE SHAFT FOR ROTATION THEREWITH INSIDE THE STATOR IN RESPONSE TO A REVOLVING FLUX ACTING THEREON, AND AT LEAST ONE MIRROR HAVING A PLANE POLISHED REFLECTING SURFACE CARRIED BY THE SHAFT FOR ROTATION THEREWITH INSIDE THE MIRROR COMPARTMENT IN CLOSCOUPLED RELATION TO THE ROTOR.
References Cited (Backward Citations)
US1186712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |