US3081052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable stabilizing means
Assignee: RTX Corp
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Filing: 1957-06-03
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Granted: 1963-03-12
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Expires: 1977-06-03
Abstract
No abstract record available.
Inventors
- 👤 Philip L Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:29
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; G05D1/0858; B; B64; B64C; B64C27/00; B64C27/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A HELICOPTER, A BODY, A SUSTAINING ROTOR FOR SAID BODY, SAID ROTOR HAVING BLATES THEREON MOUNTED FOR PITCH CHANGING MOVEMENT, A COLLECTIVE PITCH LEVER FOR CONTROLLING SAID BLADES, A MEMBER HAVING AN AERODYNAMIC SURFACE, SAID MEMBER EXTENDING LATERALLY FROM THE SIDE OF SAID BODY, MEANS FIXING SAID MEMBER AGAINST ROTATION ABOUT A VERTICAL AXIS, SAID MEMBER BEING MOVABLE TO DIFFERENT ANGLES OF INCIDENCE, MEANS CONNECTED TO SAID MEMBER FOR VARYING ITS ANGLE OF INCIDENCE WITH RESPECT TO SAID BODY, SAID LAST NAMED MEANS BEING RESPONSIVE TO MOVEMENT OF SAID PILOT''S COLLECTIVE PITCH LEVER TO POSITION SAID MEMBER BETWEEN A SMALL POSITIVE ANGLE OF ATTACK AND A SMALL NEGATIVE ANGLE OF ATTACK.
Claim 2
Dependent Claim
112 words
IN A HELICOPTER, A BODY, A SUSTAINING ROTOR FOR SAID BODY, SAID ROTOR HAVING BLATES THEREON MOUNTED FOR PITCH CHANGING MOVEMENT, A COLLECTIVE PITCH LEVER FOR CONTROLLING SAID BLADES, A MEMBER HAVING AN AERODYNAMIC SURFACE, SAID MEMBER EXTENDING LATERALLY FROM THE SIDE OF SAID BODY, MEANS FIXING SAID MEMBER AGAINST ROTATION ABOUT A VERTICAL AXIS, SAID MEMBER BEING MOVABLE TO DIFFERENT ANGLES OF INCIDENCE, MEANS CONNECTED TO SAID MEMBER FOR VARYING ITS ANGLE OF INCIDENCE WITH RESPECT TO SAID BODY, SAID LAST NAMED MEANS BEING RESPONSIVE TO MOVEMENT OF SAID PILOT''S COLLECTIVE PITCH LEVER TO POSITION SAID MEMBER BETWEEN A SMALL POSITIVE ANGLE OF ATTACK AND A SMALL NEGATIVE ANGLE OF ATTACK.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |