US3153455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding mechanism
Assignee: Boeing Co
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Filing: 1962-10-15
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Granted: 1964-10-20
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Victor S Mosinskis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; B64C27/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A MECHANISM FOR FOLDING AND UNFOLDING ROTOR BLADE MEANS OF A ROTARY WING AIRCRAFT ABOUT HINGE PINS IN THE ROTOR SYSTEM COMPRISING ACTUATING MEANS HAVING TORQUE OUTPUTS IN OPPOSITE DIRECTIONS, CONTROL MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS TO CAUSE A FIRST OF SAID TORQUE OUTPUTS TO BE OPERATIVE AND A SECOND OF SAID TORQUE OUTPUTS TO BE INOPERATIVE DURING UNFOLDED CONDITION OF SAID ROTOR BLADE MEANS, LOCK MEANS IN SAID MECHANISM RESPONSIVE TO SAID ACTUATING MEANS, SAID ACTUATING MEANS MOVING SAID LOCK MEANS TO ITS LOCKING POSITION THROUGH SAID FIRST TORQUE OUTPUT, AND MEANS RESPONSIVE TO THE FIRST OF THE TORQUE OUTPUTS OF SAID ACTUATING MEANS FOR ADVANCING SAID ROTOR BLADE MEANS ABOUT A LEAD-LAG AXIS IN THE ROTOR SYSTEM TO A FOLDING POSITION AFTER SAID LOCK MEANS IS IN LOCKING POSITION, SAID CONTROL MEANS BEING RESPONSIVE TO SAID ACTUATING MEANS TO CAUSE SAID FIRST TORQUE OUTPUT TO BECOME INOPERATIVE AND SAID SECOND TORQUE OUTPUT TO BECOME OPERATIVE WHEN THE MEASN RESPONSVE TO THE FIRST OF THE TORQUE OUTPUTS OF SAID ACTUATING MEANS HAS ADVANCED A ROTOR BLADE TO ITS FOLDING POSITION WHEREBY SAID ACTUATING MEANS CAN MOVE THE ROTOR BLADE MEANS TO ITS FOLDED POSITION.
Claim 2
Dependent Claim
197 words
A MECHANISM FOR FOLDING AND UNFOLDING ROTOR BLADE MEANS OF A ROTARY WING AIRCRAFT ABOUT HINGE PINS IN THE ROTOR SYSTEM COMPRISING ACTUATING MEANS HAVING TORQUE OUTPUTS IN OPPOSITE DIRECTIONS, CONTROL MEANS OPERATIVELY CONNECTED TO SAID ACTUATING MEANS TO CAUSE A FIRST OF SAID TORQUE OUTPUTS TO BE OPERATIVE AND A SECOND OF SAID TORQUE OUTPUTS TO BE INOPERATIVE DURING UNFOLDED CONDITION OF SAID ROTOR BLADE MEANS, LOCK MEANS IN SAID MECHANISM RESPONSIVE TO SAID ACTUATING MEANS, SAID ACTUATING MEANS MOVING SAID LOCK MEANS TO ITS LOCKING POSITION THROUGH SAID FIRST TORQUE OUTPUT, AND MEANS RESPONSIVE TO THE FIRST OF THE TORQUE OUTPUTS OF SAID ACTUATING MEANS FOR ADVANCING SAID ROTOR BLADE MEANS ABOUT A LEAD-LAG AXIS IN THE ROTOR SYSTEM TO A FOLDING POSITION AFTER SAID LOCK MEANS IS IN LOCKING POSITION, SAID CONTROL MEANS BEING RESPONSIVE TO SAID ACTUATING MEANS TO CAUSE SAID FIRST TORQUE OUTPUT TO BECOME INOPERATIVE AND SAID SECOND TORQUE OUTPUT TO BECOME OPERATIVE WHEN THE MEASN RESPONSVE TO THE FIRST OF THE TORQUE OUTPUTS OF SAID ACTUATING MEANS HAS ADVANCED A ROTOR BLADE TO ITS FOLDING POSITION WHEREBY SAID ACTUATING MEANS CAN MOVE THE ROTOR BLADE MEANS TO ITS FOLDED POSITION.
References Cited (Backward Citations)
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US2623711A
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US2925130A
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US2950767A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |