US3230404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping means for claw tooth rotors
Assignee: Old Carco LLC
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Filing: 1961-10-10
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Granted: 1966-01-18
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Expires: 1981-10-10
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:38
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/24; H02K1/243
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A DYNAMO-ELECTRODE MACHINE ROTOR COMPRISING A ROTOR HUB HAVING A ROTOR MAGNETIC COIL SUPPORTED THEREON, A PAIR OF CUP-LIKE POLE PIECES MOUNTED ON SAID HUB WITH THE CUP BOTTOM WALLS EXTENDING RADIALLY THEREFROM AND HAVING THE ROTOR COIL SANDWICHED THEREBETWEEN, SAID CUPS OPENING TOWARDS EACH OTHER AND HAVING THE SIDE WALLS THEREOF EACH FORMED WITH AXIALLY EXTENDING, CIRCUMFERENTIALLY SPACED, INTERMESHED, POLE FINGERS THAT ARE SPACED RADIALLY OUTWARDLY FROM AND SURROUNDING THE ROTOR COIL OUTER PERIPHERY, AND A POLE PIECE VIBRATION DAMPING MEANS ARRANGED CONCENTRICALLY BETWEEN THE ROTOR COIL AND THE POLE FINGERS WITH PORTIONS THEREOF ENGAGED WITH SAID FINGERS, SAID DAMPING MEANS COMPRISING A COMPRESSIBLE, RESILIENT METALLIC RING HAVING RADIALLY OUTWARDLY EXTENDING PORTIONS THEREOF COMPRESSED AGAINST AND EXTENDING BETWEEN AND INTERCONNECTING THE SIDES FACES OF ADJACENT POLE FINGERS AND EXERTING AN EXPANDING FORCE THEREAGAINST TO DAMP VIBRATIONS THEREOF.
Claim 2
Dependent Claim
139 words
IN A DYNAMO-ELECTRODE MACHINE ROTOR COMPRISING A ROTOR HUB HAVING A ROTOR MAGNETIC COIL SUPPORTED THEREON, A PAIR OF CUP-LIKE POLE PIECES MOUNTED ON SAID HUB WITH THE CUP BOTTOM WALLS EXTENDING RADIALLY THEREFROM AND HAVING THE ROTOR COIL SANDWICHED THEREBETWEEN, SAID CUPS OPENING TOWARDS EACH OTHER AND HAVING THE SIDE WALLS THEREOF EACH FORMED WITH AXIALLY EXTENDING, CIRCUMFERENTIALLY SPACED, INTERMESHED, POLE FINGERS THAT ARE SPACED RADIALLY OUTWARDLY FROM AND SURROUNDING THE ROTOR COIL OUTER PERIPHERY, AND A POLE PIECE VIBRATION DAMPING MEANS ARRANGED CONCENTRICALLY BETWEEN THE ROTOR COIL AND THE POLE FINGERS WITH PORTIONS THEREOF ENGAGED WITH SAID FINGERS, SAID DAMPING MEANS COMPRISING A COMPRESSIBLE, RESILIENT METALLIC RING HAVING RADIALLY OUTWARDLY EXTENDING PORTIONS THEREOF COMPRESSED AGAINST AND EXTENDING BETWEEN AND INTERCONNECTING THE SIDES FACES OF ADJACENT POLE FINGERS AND EXERTING AN EXPANDING FORCE THEREAGAINST TO DAMP VIBRATIONS THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |