US3332643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for aircraft
Assignee: Piasecki Aircraft Corp
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Filing: 1965-10-05
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Granted: 1967-07-25
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Expires: 1985-10-05
Abstract
No abstract record available.
Inventors
- 👤 Charles V Toner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:17
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C27/00; B64C27/32; B64C27/54; B64C27/82; B64C2027/8236; B64C2027/8254
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A CONTROL SYSTEM FOR AIRCRAFT HAVING AN OVERHEAD ROTOR, A SHROUDED TAIL PROPELLER, VERTICAL AND HORIZONTAL VANES PIVOTALLY CARRIED BY THE SHROUD, AND WINGS HAVING MOVABLE ELEMENTS ON THE TRAILING EDGE THEREOF COMPRISING, A PILOT''S POSITION, A CYCLIC STICK AND A COLLECTIVE STICK AT THE PILOT''S POSITION, CYCLIC LINKAGE INTERCONNECTING THE CYCLIC STICK AND THE OVERHEAD ROTOR FOR TILTING THE ROTOR LATERALLY UPON LATERAL MOVEMENT OF THE CYCLIC STICK, CYCLIC LINKAGE INTERCONNECTING THE CYCLIC STICK AND THE OVERHEAD ROTOR FOR TILTING THE ROTOR LONGITUDINALLY UPON FORE AND AFT MOVEMENT OF THE CYCLIC STICK, COLLECTIVE LINKAGE INTERCONNECTING THE COLLECTIVE STICK AND THE TWO-MENTIONED CYCLIC LINKAGES TO VARY THE OVERHEAD ROTOR BLADE PITCH UPON MOVEMENT OF THE COLLECTIVE STICK, MEANS FOR ADJUSTING THE PITCH OF THE TAIL PROPELLER, AND MEANS INTERCONNECTING THE TAIL PROPELLER PITCH CHANGING MEANS AND THE TWOMENTIONED CYCLIC LINKAGES TO REDUCE THE CONTROL MOVEMENT IMPARTED BY THE TWO-MENTIONED CYCLIC LINKAGES TO THE OVERHEAD ROTOR IN RESPONSE TO CYCLIC STICK MOVEMENT UPON OPERATION OF THE TAIL PROPELLER PITCH CONTROL MEANS TO INCREASE THE PITCH OF THE TAIL PROPELLER.
Claim 2
Dependent Claim
178 words
A CONTROL SYSTEM FOR AIRCRAFT HAVING AN OVERHEAD ROTOR, A SHROUDED TAIL PROPELLER, VERTICAL AND HORIZONTAL VANES PIVOTALLY CARRIED BY THE SHROUD, AND WINGS HAVING MOVABLE ELEMENTS ON THE TRAILING EDGE THEREOF COMPRISING, A PILOT''S POSITION, A CYCLIC STICK AND A COLLECTIVE STICK AT THE PILOT''S POSITION, CYCLIC LINKAGE INTERCONNECTING THE CYCLIC STICK AND THE OVERHEAD ROTOR FOR TILTING THE ROTOR LATERALLY UPON LATERAL MOVEMENT OF THE CYCLIC STICK, CYCLIC LINKAGE INTERCONNECTING THE CYCLIC STICK AND THE OVERHEAD ROTOR FOR TILTING THE ROTOR LONGITUDINALLY UPON FORE AND AFT MOVEMENT OF THE CYCLIC STICK, COLLECTIVE LINKAGE INTERCONNECTING THE COLLECTIVE STICK AND THE TWO-MENTIONED CYCLIC LINKAGES TO VARY THE OVERHEAD ROTOR BLADE PITCH UPON MOVEMENT OF THE COLLECTIVE STICK, MEANS FOR ADJUSTING THE PITCH OF THE TAIL PROPELLER, AND MEANS INTERCONNECTING THE TAIL PROPELLER PITCH CHANGING MEANS AND THE TWOMENTIONED CYCLIC LINKAGES TO REDUCE THE CONTROL MOVEMENT IMPARTED BY THE TWO-MENTIONED CYCLIC LINKAGES TO THE OVERHEAD ROTOR IN RESPONSE TO CYCLIC STICK MOVEMENT UPON OPERATION OF THE TAIL PROPELLER PITCH CONTROL MEANS TO INCREASE THE PITCH OF THE TAIL PROPELLER.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |