Patent US3587797A successfully refreshed from Google Patents.
US3587797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual speed clutches with brake
Assignee: Engins Matra SA
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Filing: 1969-05-14
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Granted: 1971-06-28
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Expires: 1989-05-14
Abstract
Abstract A DEVICE FOR DRIVING AND STOPPING A MACHINE, MORE PARTICULARLY A SEWING MACHINE. BETWEEN AND ELECTRIC DRIVING MOTOR AND AN OUTPUT PULLEY OR THE LIKE CONNECTED TO THE MACHINE, THERE IS PROVIDED A SPEED-REDUCING TRAIN AND AN ELECTROMAGNETIC-CLUTCHING AND -BRAKING DEVICE. THE LATTER COMPRISES TWO COAXIAL COILS, ONE OF WHICH CONTROLS THE CLUTCHING BY CAUSING, UPON EXICITATION, THE MOVEMENT OF AN ASSEMBLY INTEGRAL WITH A CLUTCH-COUPLING MEMBER AND THE OTHER ONE OF WHICH CONTROL THE BRAKING BY APPLICATION OF A FRACTION PACKING HOUSED IN A SUPPORT OF SAID ELECTROMAGNETIC DEVICE AGAINST A PLATE INTEGRAL WITH THE MOVEABLE ASSEMBLY.
Inventors
- 👤 Laszlo Szekely
- 👤 Claude Pigache
- 👤 Michel Lafaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:34
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/22; F; F16; F16D; F16D67/00; F16D67/02; F16D67/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |