US3083312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor for contra rotating fans
Assignee: Moore Co
•
Filing: 1960-08-29
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Granted: 1963-03-26
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Expires: 1980-08-29
Abstract
No abstract record available.
Inventors
- 👤 Robert D Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:02
CPC Classifications
F; F04; F04D; F04D19/00; F04D19/02; F04D19/024; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; H; H02; H02K; H02K7/00; H02K7/08; H02K7/083; H02K7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN APPARATUS OF THE CHARACTER DESCRIBED, INCLUDING A SHELL PROVIDING A STATIONARY SUPPORT, AN ELECTRIC MOTOR ENCLOSED IN THE SHELL AND HAVING CONTRA-ROTATING FIELD AND ARMATURE ROTORS, AXIALLY ALIGNED ANTIFRICTION BEARINGS MOUNTED IN THE SHELL AT OPPOSITE ENDS OF THE MOTOR, A MAIN SHAFT CARRYING ONE OF THE ROTORS AND HAVING ONE END JOURNALED DIRECTLY BY ONE OF SAID ANTIFRICTION BEARINGS WITH THE OTHER END PROJECTING THROUGH THE OTHER ANTIFRICTION BEARING, A TUBULAR SHAFT CARRYING THE OTHER ROTOR AND COAXIALLY MOUNTED EXTERIORLY OF THE MAIN SHAFT AND HAVING A MIDPORTION THEREOF DIRECTLY JOURNALED BY SAID OTHER ANTIFRICTION BEARING, AND MEANS SPACED FROM THE RESPECTIVE SIDES OF SAID OTHER ANTIFRICTION BEARING FOR JOURNALING THE RESPECTIVE ENDS OF THE TUBULAR SHAFT ON THE MAIN SHAFT WHEREBY AXIAL THRUST OF EACH SHAFT IS DIRECTLY SUPPORTED RESPECTIVELY BY ONE OF SAID ANTIFRICTION BEARINGS.
Claim 2
Independent Claim
139 words
AN APPARATUS OF THE CHARACTER DESCRIBED, INCLUDING A SHELL PROVIDING A STATIONARY SUPPORT, AN ELECTRIC MOTOR ENCLOSED IN THE SHELL AND HAVING CONTRA-ROTATING FIELD AND ARMATURE ROTORS, AXIALLY ALIGNED ANTIFRICTION BEARINGS MOUNTED IN THE SHELL AT OPPOSITE ENDS OF THE MOTOR, A MAIN SHAFT CARRYING ONE OF THE ROTORS AND HAVING ONE END JOURNALED DIRECTLY BY ONE OF SAID ANTIFRICTION BEARINGS WITH THE OTHER END PROJECTING THROUGH THE OTHER ANTIFRICTION BEARING, A TUBULAR SHAFT CARRYING THE OTHER ROTOR AND COAXIALLY MOUNTED EXTERIORLY OF THE MAIN SHAFT AND HAVING A MIDPORTION THEREOF DIRECTLY JOURNALED BY SAID OTHER ANTIFRICTION BEARING, AND MEANS SPACED FROM THE RESPECTIVE SIDES OF SAID OTHER ANTIFRICTION BEARING FOR JOURNALING THE RESPECTIVE ENDS OF THE TUBULAR SHAFT ON THE MAIN SHAFT WHEREBY AXIAL THRUST OF EACH SHAFT IS DIRECTLY SUPPORTED RESPECTIVELY BY ONE OF SAID ANTIFRICTION BEARINGS.
References Cited (Backward Citations)
US2451990A
Cited
US2462182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |