Patent US3220218A successfully refreshed from Google Patents.
US3220218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for disconnecting engine driven aircraft accessories
Assignee: General Electric Co
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Filing: 1963-12-30
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Granted: 1965-11-30
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Rio Russell Lewis
- 👤 Kalikow Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:08
CPC Classifications
F; F16; F16D; F16D9/00; F02; F02C; F02C7/00; F02C7/32; F05; F05D; F05D2260/00; F05D2260/30; F05D2260/31; F05D2260/311; F05D2260/40; F05D2260/402; F05D2260/4023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
FOR DISCONNECTING A DRIVEN MEMBER FROM A DRIVING MEMBER, A SHAFT DISCONNECT DEVICE COMPRISING: (A) A ROTATABLY MOUNTED SHAFT CONNECTING THE DRIVING MEMBER TO THE DRIVEN MEMBER FOR TRANSMITTING TORQUE THEREBETWEEN, (B) HELICAL GUIDE MEANS ON THE SURFACE OF SAID SHAFT, (C) A STOP AT ONE END OF SAID HELICAL GUIDE MEANS, (D) A NUT MOUNTED ON SAID HELICAL GUIDE MEANS IN A NORMALLY FIXED POSITION RELATIVE TO SAID SHAFT IN WHICH SAID NUT IS SPACED AXIALLY FROM SAID STOP, (E) A LOCK MOVABLE BETWEEN RETRACTED AND EXTENDED POSITIONS, SAID LOCK IN SAID EXTENDED POSITION ENGAGING SAID NUT TO PREVENT ROTATION OF SAID NUT WITH SAID SHAFT AND THEREBY FORCCE SAID NUT AXIALLY ALONG SAID HELICAL GUIDE MEANS, SAID HELICAL GUIDE MEANS AND SAID STOP DISPOSED SUCCH THAT SAID NUT IS MOVED INTO CONTACT WITH SAID STOP BY SAID LOCK WHEN THE SHAFT IS ROTATING IN ITS NORMAL DRIVING DIRECTION, (F) AN ACTUATOR FORO SELECTIVELY MOVING SAID LOCK FROM ITS RETRACTED POSITION TO ITS EXTENDED POSITION IN WHICH SAID LOCK ENGAGES SAID NUT, (G) AND A REDUCED STRENGTH SHAFT PORTION HAVING TORQUE
Claim 2
Dependent Claim
182 words
FOR DISCONNECTING A DRIVEN MEMBER FROM A DRIVING MEMBER, A SHAFT DISCONNECT DEVICE COMPRISING: (A) A ROTATABLY MOUNTED SHAFT CONNECTING THE DRIVING MEMBER TO THE DRIVEN MEMBER FOR TRANSMITTING TORQUE THEREBETWEEN, (B) HELICAL GUIDE MEANS ON THE SURFACE OF SAID SHAFT, (C) A STOP AT ONE END OF SAID HELICAL GUIDE MEANS, (D) A NUT MOUNTED ON SAID HELICAL GUIDE MEANS IN A NORMALLY FIXED POSITION RELATIVE TO SAID SHAFT IN WHICH SAID NUT IS SPACED AXIALLY FROM SAID STOP, (E) A LOCK MOVABLE BETWEEN RETRACTED AND EXTENDED POSITIONS, SAID LOCK IN SAID EXTENDED POSITION ENGAGING SAID NUT TO PREVENT ROTATION OF SAID NUT WITH SAID SHAFT AND THEREBY FORCCE SAID NUT AXIALLY ALONG SAID HELICAL GUIDE MEANS, SAID HELICAL GUIDE MEANS AND SAID STOP DISPOSED SUCCH THAT SAID NUT IS MOVED INTO CONTACT WITH SAID STOP BY SAID LOCK WHEN THE SHAFT IS ROTATING IN ITS NORMAL DRIVING DIRECTION, (F) AN ACTUATOR FORO SELECTIVELY MOVING SAID LOCK FROM ITS RETRACTED POSITION TO ITS EXTENDED POSITION IN WHICH SAID LOCK ENGAGES SAID NUT, (G) AND A REDUCED STRENGTH SHAFT PORTION HAVING TORQUE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |