Patent US3135481A successfully refreshed from Google Patents.
US3135481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ducted rotor aircraft
Assignee: Helipod Inc
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Filing: 1961-07-17
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Granted: 1964-06-02
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Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Lyle K V Sudrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:59
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033; B64C27/00; B64C27/02; B64C27/04; B64C27/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN AIRCRAFT, COMPRISING: A ROTOR UNIT HAVING A CIRCULAR DUCT; A DRIVEN SUSTAINING ROTOR AXIALLY ROTATABLY MOUNTED IN SAID DUCT; A PASSENGER CONTAINING CABIN HAVING A RIGID UPPER HEAD MEMBER; SAID ROTOR UNIT BEING UNIVERSALLY PIVOTALLY ATTACHED TO SAID HEAD MEMBER; ACTUATING MEANS MOUNTED IN SAID HEAD MEMBER AND BEING CONNECTED TO CIRCUMFERENTIALLY SPACED PORTIONS OF SAID ROTOR UNIT; AND CONTROL MEANS IN SAID CABIN OPERATIVELY CONNECTED TO SAID ACTUATING MEANS TO OPERATE THE SAME SELECTIVELY AND TILT SAID ROTOR UNIT RELATIVE TO THE CABIN.
Claim 2
Dependent Claim
85 words
AN AIRCRAFT, COMPRISING: A ROTOR UNIT HAVING A CIRCULAR DUCT; A DRIVEN SUSTAINING ROTOR AXIALLY ROTATABLY MOUNTED IN SAID DUCT; A PASSENGER CONTAINING CABIN HAVING A RIGID UPPER HEAD MEMBER; SAID ROTOR UNIT BEING UNIVERSALLY PIVOTALLY ATTACHED TO SAID HEAD MEMBER; ACTUATING MEANS MOUNTED IN SAID HEAD MEMBER AND BEING CONNECTED TO CIRCUMFERENTIALLY SPACED PORTIONS OF SAID ROTOR UNIT; AND CONTROL MEANS IN SAID CABIN OPERATIVELY CONNECTED TO SAID ACTUATING MEANS TO OPERATE THE SAME SELECTIVELY AND TILT SAID ROTOR UNIT RELATIVE TO THE CABIN.
References Cited (Backward Citations)
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Cited
US2806662A
Cited
US2829846A
Cited
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Cited
US3055613A
Cited
US2966318A
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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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |