US3171995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary device for coupling, with slip, a variable speed driving shaft to a driven shaft having substantially consant speed
Assignee: Precision Mecanique Labinal SA
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Filing: 1962-04-17
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Granted: 1965-03-02
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Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ponsy Louis Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:38
CPC Classifications
F; F16; F16D; F16D37/00; F16D37/02; H; H02; H02K; H02K7/00; H02K7/10; H02K7/11; H02K7/18; F16D2037/002; F16H; F16H2200/00; F16H2200/003; F16H2200/0034; F16H3/00; F16H3/02; F16H3/08; F16H3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A ROTARY COUPLING DEVICE COMPRISING AN INDUCTION CLUTCH COUPLED BETWEEN A DRIVING SHAFT ROTATING AT A VARIABLE SPEED AND A DRIVEN SHAFT THE SPEED OF WHICH IS REQUIRED TO BE MAINTAINED SUBSTANTIALLY CONSTANT; A GEAR CHANGING MECHANISM COUPLED BETWEEN SAID INDUCTION CLUTCH AND SAID DRIVING SHAFT, SAID MECHANISM HAVING TWO DIFFERENT GEAR-RATIOS; ALTERNATIVELY-ACTING MEANS PROVIDED IN SAID MECHANISM FOR TRANSMITTING THE DRIVING TORQUE FROM SAID DRIVING SHAFT, SAID MEANS COMPRISING A FREEWHEEL DEVICE AND A MAGNETIC POWDER CLUTCH RESPECTIVELY, SAID POWDER CLUTCH INCORPORATING A MAGNETIC FIELD SYSTEM FIXED TO THE CASING OF SAID COUPLING DEVICE AND TWO ROTATABLE ARMATURES CO-OPERATING WITH SAID FIELD SYSTEM AND ADAPTED TO ROTATE EITHER SEPARATELY OR AS A UNIT AT WILL
Claim 2
Dependent Claim
116 words
A ROTARY COUPLING DEVICE COMPRISING AN INDUCTION CLUTCH COUPLED BETWEEN A DRIVING SHAFT ROTATING AT A VARIABLE SPEED AND A DRIVEN SHAFT THE SPEED OF WHICH IS REQUIRED TO BE MAINTAINED SUBSTANTIALLY CONSTANT; A GEAR CHANGING MECHANISM COUPLED BETWEEN SAID INDUCTION CLUTCH AND SAID DRIVING SHAFT, SAID MECHANISM HAVING TWO DIFFERENT GEAR-RATIOS; ALTERNATIVELY-ACTING MEANS PROVIDED IN SAID MECHANISM FOR TRANSMITTING THE DRIVING TORQUE FROM SAID DRIVING SHAFT, SAID MEANS COMPRISING A FREEWHEEL DEVICE AND A MAGNETIC POWDER CLUTCH RESPECTIVELY, SAID POWDER CLUTCH INCORPORATING A MAGNETIC FIELD SYSTEM FIXED TO THE CASING OF SAID COUPLING DEVICE AND TWO ROTATABLE ARMATURES CO-OPERATING WITH SAID FIELD SYSTEM AND ADAPTED TO ROTATE EITHER SEPARATELY OR AS A UNIT AT WILL
References Cited (Backward Citations)
US1775981A
Cited
US2120352A
Cited
US2211377A
Cited
US2534134A
Cited
US2860403A
Cited
US2883611A
Cited
US2897931A
Cited
US2885045A
Cited
US2927472A
Cited
US2995950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |