US3128403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor spider for electrical machines
Assignee: ABB Norden Holding AB
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Filing: 1960-02-29
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Granted: 1964-04-07
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Expires: 1980-02-29
Abstract
No abstract record available.
Inventors
- 👤 Gynt Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:14
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/28; H02K1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A ROTOR FOR ELECTRICAL MACHINES COMPRISING A SPIDER AND A RING OF MAGNETIC MATERIAL MOUNTED IN A PRE-STRESSED CONDITION ON SAID SPIDER, SAID SPIDER COMPRISING A BOSS, A PLURALITY OF ARMS SECURED TO AND EXTENDING OUTWARDLY FROM THE BOSS TO SAID RING AND ENGAGING SAID RING AT LEAST IN THE PERIPHERAL DIRECTION OF THE RING, AND A PLURALITY OF RODS ALSO EXTENDING BETWEEN SAID RING AND SAID BOSS, SAID PLURALITY OF RODS ABSORBING AT LEAST THE MAJOR PART
Claim 2
Dependent Claim
78 words
A ROTOR FOR ELECTRICAL MACHINES COMPRISING A SPIDER AND A RING OF MAGNETIC MATERIAL MOUNTED IN A PRE-STRESSED CONDITION ON SAID SPIDER, SAID SPIDER COMPRISING A BOSS, A PLURALITY OF ARMS SECURED TO AND EXTENDING OUTWARDLY FROM THE BOSS TO SAID RING AND ENGAGING SAID RING AT LEAST IN THE PERIPHERAL DIRECTION OF THE RING, AND A PLURALITY OF RODS ALSO EXTENDING BETWEEN SAID RING AND SAID BOSS, SAID PLURALITY OF RODS ABSORBING AT LEAST THE MAJOR PART
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |