US3106964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter rotor
Assignee: Lockheed Martin Corp
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Filing: 1962-01-22
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Granted: 1963-10-15
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Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Irven H Culver
- 👤 Henry C Danielson
- 👤 Johnston J Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:03
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/54; B64C27/58; B64C27/59; B64C27/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A HELICOPTER; (A) A RIGID ROTOR HAVING A PLURALITY OF BLADES EACH WITH FREEDOM OF MOVEMENT ABOUT ITS FEATHERING AXIS ONLY, (B) A ROTOR CONTROL GYRO ADAPTED TO ROTATE IN A PLANE PARALLEL TO THE ROTOR PLANE OF ROTATION, (C) A PILOT CONTROL MEANS, (D) A CONTROL LINKAGE MEANS BETWEEN THE PILOT CONTROL MEANS AND THE CONTROL GYRO,
Claim 2
Dependent Claim
59 words
IN A HELICOPTER; (A) A RIGID ROTOR HAVING A PLURALITY OF BLADES EACH WITH FREEDOM OF MOVEMENT ABOUT ITS FEATHERING AXIS ONLY, (B) A ROTOR CONTROL GYRO ADAPTED TO ROTATE IN A PLANE PARALLEL TO THE ROTOR PLANE OF ROTATION, (C) A PILOT CONTROL MEANS, (D) A CONTROL LINKAGE MEANS BETWEEN THE PILOT CONTROL MEANS AND THE CONTROL GYRO,
References Cited (Backward Citations)
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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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |