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US3136499A
Expired / Lapsed
US
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Aircraft power transmission system
Assignee: North American Aviation Corp
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Filing: 1962-11-15
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Granted: 1964-06-09
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Expires: 1982-11-15
Abstract
No abstract record available.
Inventors
- 👤 James R Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:00
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033; B64C11/00; B64C11/30; B64C11/32; B64C11/34; B64D; B64D35/00; B64D35/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A VTOL-TYPE AIRPLANE, IN COMBINATION: A FUSELAGE, A TILT-WING CARRIED BY SAID FUSELAGE, INBOARD ENGINES CARRIED BY SAID TILT-WING AT OPPOSITE SIDES OF SAID FUSELAGE AND EACH HAVING A FREE-TURBINE POWER OUTPUT SECTION, OUTBOARD ENGINES CARRIED BY SAID TILT-WING AT OPPOSITE SIDES OF SAID FUSELAGE AND EACH HAVING A FREE-TURBINE POWER OUTPUT SECTION, INBOARD PROPELLER ASSEMBLIES RESPECTIVELY CONNECTED TO SAID INBOARD ENGINE FREE-TURBINE POWER OUTPUT SECTIONS, OUTBOARD PROPELLER ASSEMBLIES RESPECTIVELY CONNECTED TO SAID OUTBOARD ENGINE FREE-TURBINE POWER OUTPUT SECTIONS, A FIRST POWER TRANSFER MEANS CONNECTING SAID INBOARD PROPELLER ASSEMBLIES TO EACH OTHER, AND A SECOND POWER TRANSFER MEANS CONNECTING SAID OUTBOARD PROPELLER ASSEMBLIES TO EACH OTHER, EACH OF SAID POWER TRANSFER MEANS FUNCTIONING ENTIRELY INDEPENDENTLY OF THE OTHER OF SAID POWER TRANSFER MEANS, AND EACH OF SAID POWER TRANSFER MEANS BEING CAPABLE OF TRANSFERRING A MAXIMUM OF ONE-HALF THE MAXIMUM POSSIBLE DIFFERENCE BETWEEN THE OUTPUT POWERS OF THE RESPECTIVE ENGINE OUTPUT SECTIONS CONNECTED THERETO BETWEEN THE PROPELLER ASSEMBLIES CONNECTED THERETO.
Claim 2
Dependent Claim
161 words
IN A VTOL-TYPE AIRPLANE, IN COMBINATION: A FUSELAGE, A TILT-WING CARRIED BY SAID FUSELAGE, INBOARD ENGINES CARRIED BY SAID TILT-WING AT OPPOSITE SIDES OF SAID FUSELAGE AND EACH HAVING A FREE-TURBINE POWER OUTPUT SECTION, OUTBOARD ENGINES CARRIED BY SAID TILT-WING AT OPPOSITE SIDES OF SAID FUSELAGE AND EACH HAVING A FREE-TURBINE POWER OUTPUT SECTION, INBOARD PROPELLER ASSEMBLIES RESPECTIVELY CONNECTED TO SAID INBOARD ENGINE FREE-TURBINE POWER OUTPUT SECTIONS, OUTBOARD PROPELLER ASSEMBLIES RESPECTIVELY CONNECTED TO SAID OUTBOARD ENGINE FREE-TURBINE POWER OUTPUT SECTIONS, A FIRST POWER TRANSFER MEANS CONNECTING SAID INBOARD PROPELLER ASSEMBLIES TO EACH OTHER, AND A SECOND POWER TRANSFER MEANS CONNECTING SAID OUTBOARD PROPELLER ASSEMBLIES TO EACH OTHER, EACH OF SAID POWER TRANSFER MEANS FUNCTIONING ENTIRELY INDEPENDENTLY OF THE OTHER OF SAID POWER TRANSFER MEANS, AND EACH OF SAID POWER TRANSFER MEANS BEING CAPABLE OF TRANSFERRING A MAXIMUM OF ONE-HALF THE MAXIMUM POSSIBLE DIFFERENCE BETWEEN THE OUTPUT POWERS OF THE RESPECTIVE ENGINE OUTPUT SECTIONS CONNECTED THERETO BETWEEN THE PROPELLER ASSEMBLIES CONNECTED THERETO.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |