Blade connection for helicopters
Abstract
Abstract IN COMBINATION WITH A HELICOPTER ROTOR HAVING A SHAFT AND HUB BODY CONNECTED TO SAID SHAFT, A BLADE CONNECTED WHICH INCLUDES: ROTOR BLADE MEANS HAVING THE INNER PORTION THEREOF FORK-SHAPED AND STRADDLING A PORTION OF SAID HUB BODY, BOLT MEANS EXTENDING IN A DIRECTION PERPENDICULAR TO THE LONGITUDINAL EXTENSION OF SAID ROTOR BLADE MEANS AND CONNECTING SAID INNER PORTION OF SAID BLADE MEANS TO SAID HUB BODY, AND ONEJOINT BEARING MEANS INCLUDING BALL BODY MEANS PASSED THROUGH BY SAID BOLT MEANS AND HAVING OPPOSITELY LOCATED PERIPHERAL AREAS OF SAID BALL BODY MEANS FLATTENED WHERE SAID BOLT MEANS ENTERS AND LEAVES SAID BALL BODY MEANS, SAID BALL BODY MEANS ALSO INCLUDING AN OUTER BODY SUBSTANTIALLY COAXIALLY ARRANGED WITH AND SURROUNDING SAID BALL BODY MEANS.
Inventors
- 👤 Christoph Fischer
Bibliographic Details
Claims Analysis
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |