US3129349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator and commutator connections construction
Assignee: Motors Liquidation Co
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Filing: 1960-09-16
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Granted: 1964-04-14
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Expires: 1980-09-16
Abstract
No abstract record available.
Inventors
- 👤 William W Ervin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:12
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/32; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
AN ARMATURE FOR A DYNAMOELECTRIC MACHINE COMPRISING, A SHAFT, A SLOTTED ARMATURE CORE CARRIED BY SAID SHAFT, A COMMUTATOR CARRIED BY SAID SHAFT INCLUDING A PLURALITY OF METAL COMMUTATOR SEGMENTS EACH FORMED WITH A COMMUTATOR SLOT, AN ARMATURE WINDING CARRIED BY SAID ARMATURE CORE HAVING END CONDUCTORS PRESS-FITTED WITHIN SAID COMMUTATOR SLOTS TO TIGHTLY ENGAGE THE INTERNAL WALLS OF SAID COMMUTATOR SLOTS, AND AN ANNULAR MASS OF PLASTIC MATERIAL ENCOMPASSING SAID ARMARTURE CONDUCTORS ADJACENT THE END FACES OF SAID COMMUTATOR SEGMENTS AND AT LEAST PARTIALLY FILLING SAID COMMUTATOR SLOTS TO BOND SAID ARMATURE CONDUCTORS TO THE INTERNAL WALLS OF SAID COMMUTATOR SLOTS, SAID MASS OF PLASTIC MATERIAL FORMING THE SOLE BONDING MEANS FOR SECURING THE CONDUCTORS TO SAID COMMUTATOR SEGMENTS.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |