US3112797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller blades
Assignee: Deutsche Propellerbau Gesellschaft Haw and Co
•
Filing: 1959-07-13
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Granted: 1963-12-03
•
Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Reichelt Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:06
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/16; B63; B63H; B63H1/00; B63H1/02; B63H1/12; B63H1/14; B63H1/15; B63H1/26; B64C11/20; B64C11/24; Y; Y10; Y10S; Y10S416/00; Y10S416/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROPELLER BLADE COMPRISING A TENSION MEMBER ARRANGED INSIDE THEREOF ONTO WHICH FORCES ACTING ON THE BLADE ARE TRANSFERRED, SAID TENSION MEMBER BEING PROVIDED WITH INDIVIDUAL SPACED APART VIBRATION DAMPING RIBS FORMIN PART THEREOF AND RIGIDLY CONNECTED THERETO, WITH SAID RIBS EXTENDING BETWEEN THE LEADING AND TRAILING EDGES OF THE BLADE, SAID TENSION MEMBER BEING COMPRISED OF BEAM FLANGES FORMING A FORK, SAID FLANGES EACH BEING DISPOSED ADJACENT A RESPECTIVE FACE OF THE BLADE, WITH THE INTERMEDIATE PORTIONS OF SAID DAMPING RIBS BEING DISPOSED BETWEEN THE BEAM FLANGES OF SAID TENSION MEMBER AND FIRMLY CONNECTED THERETO.
Claim 2
Dependent Claim
96 words
A PROPELLER BLADE COMPRISING A TENSION MEMBER ARRANGED INSIDE THEREOF ONTO WHICH FORCES ACTING ON THE BLADE ARE TRANSFERRED, SAID TENSION MEMBER BEING PROVIDED WITH INDIVIDUAL SPACED APART VIBRATION DAMPING RIBS FORMIN PART THEREOF AND RIGIDLY CONNECTED THERETO, WITH SAID RIBS EXTENDING BETWEEN THE LEADING AND TRAILING EDGES OF THE BLADE, SAID TENSION MEMBER BEING COMPRISED OF BEAM FLANGES FORMING A FORK, SAID FLANGES EACH BEING DISPOSED ADJACENT A RESPECTIVE FACE OF THE BLADE, WITH THE INTERMEDIATE PORTIONS OF SAID DAMPING RIBS BEING DISPOSED BETWEEN THE BEAM FLANGES OF SAID TENSION MEMBER AND FIRMLY CONNECTED THERETO.
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |