US3108641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter control system
Assignee: Individual
•
Filing: 1961-03-16
•
Granted: 1963-10-29
•
Expires: 1981-03-16
Abstract
No abstract record available.
Inventors
- 👤 Taylor Dana Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:57
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A FLIGHT CONTROL FOR MODEL HELICOPTERS HAVING A FLIGHT SUSTAINING ROTOR ASSEMBLY INCLUDING A PLURALITY OF ROTOR EXTENDING LATERALLY OF A MAIN ROTOR SHAFT AND EACH ROTOR BLADE BEING PIVOTALLY MOUNTED ON A SHINGLE SUPPORT ARM PROVIDING A PIVOT MOVEMENT OF EACH ROTOR BLADE FOR CHANGING THE PITCH THEREOF, COMPRISING A WEIGHT SUPPORT ARM PIVOTALLY SECURED TO EACH SAID ROTOR ARM, A SEPARATE INDEPENDENT WEIGHT MOUNTED ON EACH SAID ARM AND ARRANGED TO MOVE FROM AN EFFECTIVE POSITION BELOW THE HORIZONTAL PLANE THROUGH ITS PIVOTAL CONNECTION WITH SAID
Claim 2
Dependent Claim
88 words
A FLIGHT CONTROL FOR MODEL HELICOPTERS HAVING A FLIGHT SUSTAINING ROTOR ASSEMBLY INCLUDING A PLURALITY OF ROTOR EXTENDING LATERALLY OF A MAIN ROTOR SHAFT AND EACH ROTOR BLADE BEING PIVOTALLY MOUNTED ON A SHINGLE SUPPORT ARM PROVIDING A PIVOT MOVEMENT OF EACH ROTOR BLADE FOR CHANGING THE PITCH THEREOF, COMPRISING A WEIGHT SUPPORT ARM PIVOTALLY SECURED TO EACH SAID ROTOR ARM, A SEPARATE INDEPENDENT WEIGHT MOUNTED ON EACH SAID ARM AND ARRANGED TO MOVE FROM AN EFFECTIVE POSITION BELOW THE HORIZONTAL PLANE THROUGH ITS PIVOTAL CONNECTION WITH SAID
References Cited (Backward Citations)
USRE18957E
Cited
DE236749C
Cited
US860447A
Cited
US1350312A
Cited
US2489343A
Cited
US2620592A
Cited
US2940526A
Cited
GB751837A
Cited
US2827968A
Cited
US2931132A
Cited
US2971584A
Cited
FR1168842A
Cited
US2934151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |