Patent US3204699A successfully refreshed from Google Patents.
US3204699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller
Assignee: Aerojet Rocketdyne Inc
•
Filing: 1964-02-28
•
Granted: 1965-09-07
•
Expires: 1984-02-28
Abstract
No abstract record available.
Inventors
- 👤 Calvin A Gongwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:38
CPC Classifications
A; A63; A63B; A63B35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A FLUID PROPELLER COMPRISING A FRAME MEMBER ADAPTED TO PARTAKE OF TO AND FRO MOTION, A PAIR OF VANES RESPECTIVELY DISPOSED ON OPPOSITE SIDES OF SAID FRAME MEMBER IN SYMMETRICAL RELATIONSHIP WITH RESPECT TO EACH OTHER AND WITH RESPECT TO SAID FRAME MEMBER, A SHAFT FIXEDLY ATTACHED TO SAID FRAME MEMBER AND EXTENDING OUTWARDLY FROM THE OPPOSITE SIDES THEREOF, EACH OF SAID VANES BEING RESPECTIVELY MOUNTED ON SAID SHAFT FOR PIVOTAL MOVEMENT ABOUT AN AXIS DISPOSED FORWARDLY OF THE LONGITUDINAL AXIS OF SAID VANE AND PARALLEL THERETO, AND AN ELASTIC MEMBER CONNECTING A CORRESPONDING POINT OF EACH OF SAID VANES REARWARDLY OF THE LONGITUDINAL AXIS THEREOF TO SAID FRAME MEMBER FOR RESILIENTLY URGING SAID VANES TO RESPECTIVE NORMAL CENTER POSITIONS, SAID VANES PIVOTALLY OSCILLATING ABOUT SAID SHAFT IN RESPONSE TO A TO AND FRO MOTION BEING IMPARTED TO SAID FRAME MEMBER IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE RESULTING RELATIVE FLUID FLOW DEVELOPED BY THE PIVOTAL OSCILLATION OF SAID VANES.
Claim 2
Dependent Claim
160 words
A FLUID PROPELLER COMPRISING A FRAME MEMBER ADAPTED TO PARTAKE OF TO AND FRO MOTION, A PAIR OF VANES RESPECTIVELY DISPOSED ON OPPOSITE SIDES OF SAID FRAME MEMBER IN SYMMETRICAL RELATIONSHIP WITH RESPECT TO EACH OTHER AND WITH RESPECT TO SAID FRAME MEMBER, A SHAFT FIXEDLY ATTACHED TO SAID FRAME MEMBER AND EXTENDING OUTWARDLY FROM THE OPPOSITE SIDES THEREOF, EACH OF SAID VANES BEING RESPECTIVELY MOUNTED ON SAID SHAFT FOR PIVOTAL MOVEMENT ABOUT AN AXIS DISPOSED FORWARDLY OF THE LONGITUDINAL AXIS OF SAID VANE AND PARALLEL THERETO, AND AN ELASTIC MEMBER CONNECTING A CORRESPONDING POINT OF EACH OF SAID VANES REARWARDLY OF THE LONGITUDINAL AXIS THEREOF TO SAID FRAME MEMBER FOR RESILIENTLY URGING SAID VANES TO RESPECTIVE NORMAL CENTER POSITIONS, SAID VANES PIVOTALLY OSCILLATING ABOUT SAID SHAFT IN RESPONSE TO A TO AND FRO MOTION BEING IMPARTED TO SAID FRAME MEMBER IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE RESULTING RELATIVE FLUID FLOW DEVELOPED BY THE PIVOTAL OSCILLATION OF SAID VANES.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |