Patent US3229931A successfully refreshed from Google Patents.
US3229931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency removal of aircraft sustaining means
Assignee: Individual
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Filing: 1964-07-20
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Granted: 1966-01-18
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Agnew E Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:58
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A ROTOR HUB ARRANGEMENT FOR AIRCRAFT HAVING ROTATABLE SUSTAINING MEANS, COMPRISING A HUB CONSTRUCTION HAVING MEANS FOR SECUREMENT TO A DRIVING MEANS AND INCLUDING A PLURALITY OF PORTIONS EACH HAVING ATTACHMENT MEANS FOR CONNECTION OF A CORRESPONDING PART OF SAID SUSTAINING MEANS THERETO, BALLISTIC CHARGE MEANS EMBEDDED WITHIN SAID HUB AT PREDETERMINED LOCATIONS, AND MEANS FOR IGNITING SAID CHARGE MEANS, SO CONSTRUCTED AND ARRANGED THAT WHEN AN AIRCRAFT PROVIDED WITH SAID ARRANGEMENT ENCOUNTERS INSURMOUNTABLE DIFFCULTIES, SAID CHARGE MEANS MAY BE IGNITED FOR DEMOLITION AND DISCARDING OF SAID PORTIONS AND THEIR RESPECTIVE ATTACHMENTS, WHEREBY SUFFICIENT CLEARANCE IS PROVIDED FOR USE OF CONVENTIONAL OCCUPLANT-SEAT EJECTION APPARATUS.
Claim 2
Dependent Claim
104 words
A ROTOR HUB ARRANGEMENT FOR AIRCRAFT HAVING ROTATABLE SUSTAINING MEANS, COMPRISING A HUB CONSTRUCTION HAVING MEANS FOR SECUREMENT TO A DRIVING MEANS AND INCLUDING A PLURALITY OF PORTIONS EACH HAVING ATTACHMENT MEANS FOR CONNECTION OF A CORRESPONDING PART OF SAID SUSTAINING MEANS THERETO, BALLISTIC CHARGE MEANS EMBEDDED WITHIN SAID HUB AT PREDETERMINED LOCATIONS, AND MEANS FOR IGNITING SAID CHARGE MEANS, SO CONSTRUCTED AND ARRANGED THAT WHEN AN AIRCRAFT PROVIDED WITH SAID ARRANGEMENT ENCOUNTERS INSURMOUNTABLE DIFFCULTIES, SAID CHARGE MEANS MAY BE IGNITED FOR DEMOLITION AND DISCARDING OF SAID PORTIONS AND THEIR RESPECTIVE ATTACHMENTS, WHEREBY SUFFICIENT CLEARANCE IS PROVIDED FOR USE OF CONVENTIONAL OCCUPLANT-SEAT EJECTION APPARATUS.
Claim 3
Dependent Claim
111 words
IN AN AIRCRAFT HAVING UPWARDLY DIRECTED OCCUPANTSEAT EJECTION MEANS AND ROTATABLE SUSTAINING MEANS NORMALLY OBSTRUCTING THE OPERATIONAL PATH OF SAID EJECTION MEANS, A HUB CARRYING SAID SUSTAINING MEANS, A ROTOR SHAFT, MEANS FOR DRIVINGLY ENGAGING SAID HUB WITH SAID SHAFT, END THRUST RESTRAINING MEANS FOR NORMALLY MAINTAINING SAID HUB UPON SAID SHAFT, BALLISTIC CHARGE MEANS FOR EXERTING A SUBSTANTIAL AXIAL FORCE UPON SAID RESTRAINING MEANS, AND MEANS FOR IGNITING SAID CHARGE MEANS, SO CONSTRUCTED AND ARRANGED THAT UPON EMERGENCY IGNITION OF SAID CHARGE MEANS, SAID RESTRAINING MEANS IS RENDERED INEFFECTIVE TO ENABLE RAPID REMOVAL OF SAID HUB AND SUSTAINING MEANS AND CLEAR SAID PATH FOR EMERGENCY ACTUATION OF SAID EJECTION MEANS.
Claim 4
Dependent Claim
111 words
IN AN AIRCRAFT HAVING UPWARDLY DIRECTED OCCUPANTSEAT EJECTION MEANS AND ROTATABLE SUSTAINING MEANS NORMALLY OBSTRUCTING THE OPERATIONAL PATH OF SAID EJECTION MEANS, A HUB CARRYING SAID SUSTAINING MEANS, A ROTOR SHAFT, MEANS FOR DRIVINGLY ENGAGING SAID HUB WITH SAID SHAFT, END THRUST RESTRAINING MEANS FOR NORMALLY MAINTAINING SAID HUB UPON SAID SHAFT, BALLISTIC CHARGE MEANS FOR EXERTING A SUBSTANTIAL AXIAL FORCE UPON SAID RESTRAINING MEANS, AND MEANS FOR IGNITING SAID CHARGE MEANS, SO CONSTRUCTED AND ARRANGED THAT UPON EMERGENCY IGNITION OF SAID CHARGE MEANS, SAID RESTRAINING MEANS IS RENDERED INEFFECTIVE TO ENABLE RAPID REMOVAL OF SAID HUB AND SUSTAINING MEANS AND CLEAR SAID PATH FOR EMERGENCY ACTUATION OF SAID EJECTION MEANS.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |