Patent US3211399A successfully refreshed from Google Patents.
US3211399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft driven or borne by a plurality of hydraulic motors with substantially equal or proportional rotary velocity
Assignee: Individual
•
Filing: 1963-09-20
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Granted: 1965-10-12
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Eickmann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:08
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0008; B64C29/0016; B64C29/0025; B64C11/00; B64C27/00; B64C27/04; B64C27/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROPULSION SYSTEM FOR A FLUID BORM VEHICLE SUCH AS AN AIRCRAFT, OR WATER VEHICLE, COMPRISING FLUID FLOW PRODUCING MEANS, AT LEAST TWO POSITIVE DISPLACEMENT FLUID MOTORS EACH HAVING A ROTATING SHAFT DISPOSED SUBSTANTIALLY PARALLEL TO FLOW OF FLUID IN WHICH THE VEHICLE IS BORNE AND WITH A ROTATING PROPULSION MEMBER SECURED THERETO, AND CONDUIT MEANS DIRECTLY CONNECTING SAID TWO FLUID MOTORS AND SAID FLUID FLOW PRODUCING MEANS IN SERIES FOR DIRECTING FLUID UNDER PRESSURE FROM SAID FLUID FLOW PRODUCING MEANS TO EACH OF SAID FLUID MOTORS IN SUCCESSION AND TO RETURN THE FLOW TO SAID FLUID FLOW PRODUCING MEANS, WHEREBY TO ROTATE SAID FLUID MOTOR SHAFTS AND SAID ROTATING PROPULSION MEMBER AT DEFINITE PROPORTIONAL ANGULAR SPEEDS IN DEPENDENCE ON THE CAPACITIES OF SAID FLUID MOTORS.
Claim 2
Dependent Claim
126 words
A PROPULSION SYSTEM FOR A FLUID BORM VEHICLE SUCH AS AN AIRCRAFT, OR WATER VEHICLE, COMPRISING FLUID FLOW PRODUCING MEANS, AT LEAST TWO POSITIVE DISPLACEMENT FLUID MOTORS EACH HAVING A ROTATING SHAFT DISPOSED SUBSTANTIALLY PARALLEL TO FLOW OF FLUID IN WHICH THE VEHICLE IS BORNE AND WITH A ROTATING PROPULSION MEMBER SECURED THERETO, AND CONDUIT MEANS DIRECTLY CONNECTING SAID TWO FLUID MOTORS AND SAID FLUID FLOW PRODUCING MEANS IN SERIES FOR DIRECTING FLUID UNDER PRESSURE FROM SAID FLUID FLOW PRODUCING MEANS TO EACH OF SAID FLUID MOTORS IN SUCCESSION AND TO RETURN THE FLOW TO SAID FLUID FLOW PRODUCING MEANS, WHEREBY TO ROTATE SAID FLUID MOTOR SHAFTS AND SAID ROTATING PROPULSION MEMBER AT DEFINITE PROPORTIONAL ANGULAR SPEEDS IN DEPENDENCE ON THE CAPACITIES OF SAID FLUID MOTORS.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |