US3117749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground control for helicopters
Assignee: RTX Corp
•
Filing: 1959-06-26
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Granted: 1964-01-14
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Expires: 1979-06-26
Abstract
No abstract record available.
Inventors
- 👤 Henry R Angel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:11
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/04; G05D1/06; G05D1/0607; G05D1/0653; G05D1/0676; B; B64; B64C; B64C27/00; B64C27/32; B64C27/54; G05D1/0011; G05D1/0033; G05D1/0661; G05D1/0669
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN COMBINATION, A HELICOPTER HAVING BLADES MOUNTED FOR PITCH CHANGING MOVEMENT, FIRST MEANS FOR CONTROLLING THE COLLECTIVE PITCH OF SAID BLADES, SECOND MEANS FOR CONTROLLING THE CYCLIC PITCH OF SAID BLADES, FIRST TRANSDUCER MEANS BEING CONNECTED TO SAID SECOND MEANS FOR ACTUATING THEM, SECOND TRANSDUCER MEANS BEING CONNECTED TO SAID FIRST MEANS FOR ACTUATING THEM, A FIRST TUBULAR MEMBER ON SAID HELICOPTER MOUNTED FOR ANGULAR MOVEMENT, SAID FIRST TRANSDUCER MEANS BEING CONNECTED TO SAID FIRST TUBULAR MEMBER AND RESPONSIVE TO ANGULAR MOVEMENTS THEREOF, A SECOND ROD MEMBER MOUNTED FOR SMALL AXIAL MOVEMENT IN SAID FIRST TUBULAR MEMBER, SAID SECOND TRANSDUCER MEANS BEING CONNECTED TO SAID SECOND ROD MEMBER AND RESPONSIVE TO AXIAL MOVEMENTS THEREOF, SAID SECOND ROD MEMBER BEING MOVEABLE BY AN OPERATOR IN A POSITION OUTSIDE OF SAID HELICOPTER, AXIAL MOVEMENTS OF SAID SECOND ROD MEMBER BEING CONVEYED DIRECTLY TO SAID SECOND TRANSDUCER MEANS AND ANGULAR MOVEMENTS OF SAID SECOND ROD MEMBER BEING
Claim 2
Dependent Claim
154 words
IN COMBINATION, A HELICOPTER HAVING BLADES MOUNTED FOR PITCH CHANGING MOVEMENT, FIRST MEANS FOR CONTROLLING THE COLLECTIVE PITCH OF SAID BLADES, SECOND MEANS FOR CONTROLLING THE CYCLIC PITCH OF SAID BLADES, FIRST TRANSDUCER MEANS BEING CONNECTED TO SAID SECOND MEANS FOR ACTUATING THEM, SECOND TRANSDUCER MEANS BEING CONNECTED TO SAID FIRST MEANS FOR ACTUATING THEM, A FIRST TUBULAR MEMBER ON SAID HELICOPTER MOUNTED FOR ANGULAR MOVEMENT, SAID FIRST TRANSDUCER MEANS BEING CONNECTED TO SAID FIRST TUBULAR MEMBER AND RESPONSIVE TO ANGULAR MOVEMENTS THEREOF, A SECOND ROD MEMBER MOUNTED FOR SMALL AXIAL MOVEMENT IN SAID FIRST TUBULAR MEMBER, SAID SECOND TRANSDUCER MEANS BEING CONNECTED TO SAID SECOND ROD MEMBER AND RESPONSIVE TO AXIAL MOVEMENTS THEREOF, SAID SECOND ROD MEMBER BEING MOVEABLE BY AN OPERATOR IN A POSITION OUTSIDE OF SAID HELICOPTER, AXIAL MOVEMENTS OF SAID SECOND ROD MEMBER BEING CONVEYED DIRECTLY TO SAID SECOND TRANSDUCER MEANS AND ANGULAR MOVEMENTS OF SAID SECOND ROD MEMBER BEING
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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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |