Patent US3221845A successfully refreshed from Google Patents.
US3221845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring-applied magnetically-released brake
Assignee: RH Stearns and Co
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Filing: 1963-03-04
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Granted: 1965-12-07
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Expires: 1983-03-04
Abstract
No abstract record available.
Inventors
- 👤 Quinten A Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:10
CPC Classifications
F; F16; F16D; F16D59/00; F16D59/02; F16D55/00; F16D55/24; F16D55/26; F16D55/28; H; H02; H02K; H02K7/00; H02K7/10; H02K7/102; H02K7/1021; H02K7/1023; F16D2055/0004; F16D2055/0062; F16D2121/00; F16D2121/18; F16D2121/20; F16D2121/22; F16D2127/00; F16D2127/02; F16D2127/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
THE COMBINATION WITH A ROTOR HAVING AT LEAST ONE DISK MOUNTED THEREON, COACTING DISK MEANS SUPPORTED FOR FRICTIONAL ENGAGEMENT WITH SAID ONE DISK, SAID DISK AND DISK MEANS BEING SUBSTANTIALLY COAXIAL, AND MEANS FOR SELECTIVELY ENGAGING AND RELIEVING FRICTIONAL ENGAGEMENT OF SAID COACTING DISK MEANS WITH SAID ONE DISK, SAID MEANS COMPRISING A MOUNTING PLATE, A YOKE LEVER EXTENDING TRANSVERSELY OF THE MOUNTING PLATEE, A PAIR OF BEARING BALLS AT OPPOSITE SIDES OF THE MOUNTING PLATE AND ENGAGED BY THE YOKE LEVER, SAID BALLS CONSTITUTING FULCRUM MEANS FOR PIVOTING THE YOKE LEVER FOR MOVEMENT WITH RESPECT TO THE MOUNTING PLATE, THE MOUNTING PLATE AND YOKE LEVER HAVING OPPOSING SOCKETS IN WHICH THE BEARING BALLS ARE PARTIALLY RECEIVED, MEANS FOR EXERTING BIAS ON THE YOKE LEVER IN ONE DIRECTION ABOUT THE FULCRUM MEANS THUS PROVIDED, MEANS CONNECTING THE YOKE LEVER WITH SAID COACTING DISK MEANS FOR TRANSMITTING YOKE LEVER MOVEMENT TO SAID DISK MEANS, AND ELECTROMAGNETIC MEANS FOR ACTUATING THE LEVER IN A DIRECTION OPPOSITE TO SAID BIAS.
Claim 2
Dependent Claim
167 words
THE COMBINATION WITH A ROTOR HAVING AT LEAST ONE DISK MOUNTED THEREON, COACTING DISK MEANS SUPPORTED FOR FRICTIONAL ENGAGEMENT WITH SAID ONE DISK, SAID DISK AND DISK MEANS BEING SUBSTANTIALLY COAXIAL, AND MEANS FOR SELECTIVELY ENGAGING AND RELIEVING FRICTIONAL ENGAGEMENT OF SAID COACTING DISK MEANS WITH SAID ONE DISK, SAID MEANS COMPRISING A MOUNTING PLATE, A YOKE LEVER EXTENDING TRANSVERSELY OF THE MOUNTING PLATEE, A PAIR OF BEARING BALLS AT OPPOSITE SIDES OF THE MOUNTING PLATE AND ENGAGED BY THE YOKE LEVER, SAID BALLS CONSTITUTING FULCRUM MEANS FOR PIVOTING THE YOKE LEVER FOR MOVEMENT WITH RESPECT TO THE MOUNTING PLATE, THE MOUNTING PLATE AND YOKE LEVER HAVING OPPOSING SOCKETS IN WHICH THE BEARING BALLS ARE PARTIALLY RECEIVED, MEANS FOR EXERTING BIAS ON THE YOKE LEVER IN ONE DIRECTION ABOUT THE FULCRUM MEANS THUS PROVIDED, MEANS CONNECTING THE YOKE LEVER WITH SAID COACTING DISK MEANS FOR TRANSMITTING YOKE LEVER MOVEMENT TO SAID DISK MEANS, AND ELECTROMAGNETIC MEANS FOR ACTUATING THE LEVER IN A DIRECTION OPPOSITE TO SAID BIAS.
References Cited (Backward Citations)
US2188766A
Cited
US3139160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |