US3272999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air bearings for dynamoelectric machine
Assignee: Individual
•
Filing: 1963-10-17
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Granted: 1966-09-13
•
Expires: 1983-10-17
Abstract
No abstract record available.
Inventors
- 👤 James R Turk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:47
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/161; F; F16; F16C; F16C21/00; H02K7/00; H02K7/08; H02K7/083; F16C17/00; F16C17/04; F16C17/047; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2380/00; F16C2380/26; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1005; H02K5/167; H02K5/1672; H02K5/173; H02K5/1732
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A DYNAMOELECTRIC MACHINE COMPRISING A STATOR ASSEMBLY HAVING A SMOOTH CYLINDRICAL BORE; A ROTOR HAVING A ROTOR SHAFT CONCENTRICALLY DISPOSED WITHIN SAID BORE, SAID ROTOR HAVING A SMOOTH CYLINDRICAL SURFACE WHICH IS COMPLEMENTAL WITH THE SURFACE OF SAID STATION BORE AND DEFINES THEREWITH A MINUTE AIR GAP IN WHICH THERE IS PRODUCED AN AIR FILM WHEN SAID ROTOR IS ROTATED AT OPERATIONAL SPEEDS; BALL BEARINGS DISPOSED ADJACENT THE ENDS OF SAID STATOR ASSEMBLY, THE ENDS OF SAID ROTOR SHAFT BEING JOURNALED IN SAID BALL BEARINGS; MINUTE AIR GAPS BETWEEN THE ENDS OF SAID ROTOR SHAFT AND SAID BALL BEARINGS, SAID AIR GAPS BEING SLIGHTLY SMALLER THAN THE AIR GAP BETWEEN THE SURFACES OF SAID BORE AND ROTOR SO THAT WHEN THE ROTOR IS AT REST OR IS ROTATING AT STARTING AND STOPPING
Claim 2
Dependent Claim
132 words
A DYNAMOELECTRIC MACHINE COMPRISING A STATOR ASSEMBLY HAVING A SMOOTH CYLINDRICAL BORE; A ROTOR HAVING A ROTOR SHAFT CONCENTRICALLY DISPOSED WITHIN SAID BORE, SAID ROTOR HAVING A SMOOTH CYLINDRICAL SURFACE WHICH IS COMPLEMENTAL WITH THE SURFACE OF SAID STATION BORE AND DEFINES THEREWITH A MINUTE AIR GAP IN WHICH THERE IS PRODUCED AN AIR FILM WHEN SAID ROTOR IS ROTATED AT OPERATIONAL SPEEDS; BALL BEARINGS DISPOSED ADJACENT THE ENDS OF SAID STATOR ASSEMBLY, THE ENDS OF SAID ROTOR SHAFT BEING JOURNALED IN SAID BALL BEARINGS; MINUTE AIR GAPS BETWEEN THE ENDS OF SAID ROTOR SHAFT AND SAID BALL BEARINGS, SAID AIR GAPS BEING SLIGHTLY SMALLER THAN THE AIR GAP BETWEEN THE SURFACES OF SAID BORE AND ROTOR SO THAT WHEN THE ROTOR IS AT REST OR IS ROTATING AT STARTING AND STOPPING
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |