Patent US4957340A successfully refreshed from Google Patents.
US3076906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eddy current clutch control for a synchronized drive
Assignee: Eaton Corp
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Filing: 1959-04-06
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Granted: 1963-02-05
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Expires: 1979-04-06
Abstract
No abstract record available.
Inventors
- 👤 Frank E Simo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:27
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A MULTIPLE DRIVE SYSTEM THE COMBINATION COMPRISING, A PAIR OF VARIABLE SPEED DRIVES ADAPTED TO BE INDEPENDENTLY COUPLED IN DRIVING RELATION TO A COMMON LOAD, EACH OF SAID DRIVES INCLUDING AN ELECTRO-RESPONSIVE SPEED TRANSLATOR HAVING INDEPENDENT SPEED CONTROL MEANS, EACH SPEED CONTROL MEANS HAVING MEANS COACTING IN RESPONSE TO VARIATIONS IN THE SPEED OF THE CORRESPONDING DRIVE TO AUTOMATICALLY COMPENSATE FOR SUCH SPEED VARIATIONS IN EACH DRIVE RESPECTIVELY, INDEPENDENT MEANS FOR TRANSLATING THE SPEED OF EACH DRIVEN MEMBER RESPECTIVELY INTO A CORRESPONDING ELECTRICAL SIGNAL, MEANS FOR COMPARING SAID SIGNALS AND COACTING WITH THE SPEED CONTROL OF ONE OF SAID DRIVES IN RESPONSE TO A DIFFERENTIAL BETWEEN THE COMPARED SIGNALS TO SYNCHRONIZE THE SPEED OF SAID ONE DRIVE WITH THE SPEED OF THE OTHER DRIVE, AND MEANS COUPLED TO AND COACTING WITH SAID SYNCHRONIZING MEANS TO INTRODUCE A SIGNAL TO PROVIDE A SELECTED OFFSET IN THE SPEED OF SAID ONE DRIVE WITH RESPECT TO THE SPEED OF THE OTHER DRIVE.
Claim 2
Dependent Claim
160 words
IN A MULTIPLE DRIVE SYSTEM THE COMBINATION COMPRISING, A PAIR OF VARIABLE SPEED DRIVES ADAPTED TO BE INDEPENDENTLY COUPLED IN DRIVING RELATION TO A COMMON LOAD, EACH OF SAID DRIVES INCLUDING AN ELECTRO-RESPONSIVE SPEED TRANSLATOR HAVING INDEPENDENT SPEED CONTROL MEANS, EACH SPEED CONTROL MEANS HAVING MEANS COACTING IN RESPONSE TO VARIATIONS IN THE SPEED OF THE CORRESPONDING DRIVE TO AUTOMATICALLY COMPENSATE FOR SUCH SPEED VARIATIONS IN EACH DRIVE RESPECTIVELY, INDEPENDENT MEANS FOR TRANSLATING THE SPEED OF EACH DRIVEN MEMBER RESPECTIVELY INTO A CORRESPONDING ELECTRICAL SIGNAL, MEANS FOR COMPARING SAID SIGNALS AND COACTING WITH THE SPEED CONTROL OF ONE OF SAID DRIVES IN RESPONSE TO A DIFFERENTIAL BETWEEN THE COMPARED SIGNALS TO SYNCHRONIZE THE SPEED OF SAID ONE DRIVE WITH THE SPEED OF THE OTHER DRIVE, AND MEANS COUPLED TO AND COACTING WITH SAID SYNCHRONIZING MEANS TO INTRODUCE A SIGNAL TO PROVIDE A SELECTED OFFSET IN THE SPEED OF SAID ONE DRIVE WITH RESPECT TO THE SPEED OF THE OTHER DRIVE.
References Cited (Backward Citations)
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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) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |