US3360217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duct rotation system for vtol aircraft
Assignee: Individual
•
Filing: 1965-05-26
•
Granted: 1967-12-26
•
Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 John C Trotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:40
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0033; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5116
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A VERTICAL TAKE-OFF AND LAND AIRPLANE, HAVING TURBINE GAS ENGINES AND PROPELLERS HOUSED IN TWO FORWARD AND TWO AFT DUCTS, A SYSTEM OF CONTROLLING THE ROTATION OF THE PROPELLER HOUSING DUCTS COMPRISING: A PLURALITY OF HYDRAULIC PUMPS OPERATED BY THE TURBINE GAS ENGINES; A PLURALITY OF HYDRAULIC MOTORS OPERATED BY THE PRESSURE OF THE HYDRAULIC FLUID GENERATRO BY SAID PUMPS; A MOTION TRANSMITTING MECHANISM CONNECTED TO EACH OF THE HYDRAULIC MOTORS AND TO EACH OF THE DUCTS TO TRANSMIT THE ROTATION OF THE MOTORS TO A PARTIAL ROTATION TO THE DUCTS, SAID ROTATION OF SAID DUCTS BEING LIMITED TO 91* OF ARC; MEANS CONNECTING ALL OF THE DUCTS TO SYNCHRONIZE THE ROTATION THEREOF; MEANS ASSOCIATED WITH SAID CONNECTING MEANS TO PREVENT ROTATION OF THE CONNECTING MEANS AND CONSEQUENTLY ROTATION OF THE DUCTS; MEANS CONNECTING THE FORWARD DUCTS TO OPERATE IN SYNCHRONISM; MEANS CONNECTING THE AFT DUCTS TO ROTATE IN SYNCHRONISM; MEANS FOR ADJUSTING THE RELATIVE ROTATION OF EACH OF THE FORWARD DUCTS TO EACH OTHER TO ORIGINALLY SYNCHRONIZE THE ROTATIONAL MOVEMENT OF THE FORWARD DUCTS.
Claim 2
Dependent Claim
176 words
IN A VERTICAL TAKE-OFF AND LAND AIRPLANE, HAVING TURBINE GAS ENGINES AND PROPELLERS HOUSED IN TWO FORWARD AND TWO AFT DUCTS, A SYSTEM OF CONTROLLING THE ROTATION OF THE PROPELLER HOUSING DUCTS COMPRISING: A PLURALITY OF HYDRAULIC PUMPS OPERATED BY THE TURBINE GAS ENGINES; A PLURALITY OF HYDRAULIC MOTORS OPERATED BY THE PRESSURE OF THE HYDRAULIC FLUID GENERATRO BY SAID PUMPS; A MOTION TRANSMITTING MECHANISM CONNECTED TO EACH OF THE HYDRAULIC MOTORS AND TO EACH OF THE DUCTS TO TRANSMIT THE ROTATION OF THE MOTORS TO A PARTIAL ROTATION TO THE DUCTS, SAID ROTATION OF SAID DUCTS BEING LIMITED TO 91* OF ARC; MEANS CONNECTING ALL OF THE DUCTS TO SYNCHRONIZE THE ROTATION THEREOF; MEANS ASSOCIATED WITH SAID CONNECTING MEANS TO PREVENT ROTATION OF THE CONNECTING MEANS AND CONSEQUENTLY ROTATION OF THE DUCTS; MEANS CONNECTING THE FORWARD DUCTS TO OPERATE IN SYNCHRONISM; MEANS CONNECTING THE AFT DUCTS TO ROTATE IN SYNCHRONISM; MEANS FOR ADJUSTING THE RELATIVE ROTATION OF EACH OF THE FORWARD DUCTS TO EACH OTHER TO ORIGINALLY SYNCHRONIZE THE ROTATIONAL MOVEMENT OF THE FORWARD DUCTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |