US3356155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade fold adjustment and lock
Assignee: Individual
•
Filing: 1965-07-29
•
Granted: 1967-12-05
•
Expires: 1985-07-29
Abstract
No abstract record available.
Inventors
- 👤 Donald L Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:17
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; B64C27/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A MECHANISM FOR FOLDING HELICOPTER BLADES FROM AN EXTENDED TO A PRECISE FOLDED POSITION, SAID MECHANISM HAVING MESHED GEAR SEGMENTS ATTACHED TO THE HELICOPTER BLADE AND TO AN OPERATING PISTON, A MECHANISM FOR CHANGING THE EFFECTIVE LENGTH OF A PISTON ROD CONNECTING THE PISTON WITH THE GEAR SEGMENTS COMPRISING A PIVOT PIN ECCENTRICALLY MOUNTED IN THE GEAR SEGMENT AND PIVOTALLY SUPPORTING THE PISTON ROD; MEANS FOR ROTATING THE ECCENTRICALLY MOUNTING MEANS OF THE PIN TO CHANGE THE EFFECTIVE LENGTH OF THE PISTON ROD; AND MEANS FOR LOCKING THE ECCENTRICALLY MOUNTING MEANS IN ADJUSTED POSITION.
Claim 2
Dependent Claim
95 words
IN A MECHANISM FOR FOLDING HELICOPTER BLADES FROM AN EXTENDED TO A PRECISE FOLDED POSITION, SAID MECHANISM HAVING MESHED GEAR SEGMENTS ATTACHED TO THE HELICOPTER BLADE AND TO AN OPERATING PISTON, A MECHANISM FOR CHANGING THE EFFECTIVE LENGTH OF A PISTON ROD CONNECTING THE PISTON WITH THE GEAR SEGMENTS COMPRISING A PIVOT PIN ECCENTRICALLY MOUNTED IN THE GEAR SEGMENT AND PIVOTALLY SUPPORTING THE PISTON ROD; MEANS FOR ROTATING THE ECCENTRICALLY MOUNTING MEANS OF THE PIN TO CHANGE THE EFFECTIVE LENGTH OF THE PISTON ROD; AND MEANS FOR LOCKING THE ECCENTRICALLY MOUNTING MEANS IN ADJUSTED POSITION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |