US3127741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propulsion control system
Assignee: Individual
•
Filing: 1961-09-28
•
Granted: 1964-04-07
•
Expires: 1981-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John E Pottharst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:01
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/02; B63H11/10; B63H11/107; B63H11/117
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A CONTROL FOR A MARINE JET PROPULSION UNIT COMPRISING AN EXHAUST PASSAGE FOR DISCHARGING A JET STREAM TO IMPART FORWARD THRUST TO THE BOAT, MEANS DEFINING A REVERSE DISCHARGE PASSAGE FOR THE JET STREAM TO IMPART REVERSE THRUST TO THE BOAT, AND COUNTERBALANCED REVERSING GATES MOVABLE IN UNISON IN OPPOSITE DIRECTIONS TO THE JET STREAM FROM OPEN POSITIONS TO POSITIONS IN WHICH THEY COOPERATE TO DEFLECT THE JET STREAM INTO THE REVERSE DISCHARGE PASSAGE, ONE GATE MOVING AGAINST AND THE OTHER MOVING WITH THE JET STREAM.
References Cited (Backward Citations)
US1344518A
Cited
US1493280A
Cited
US2024274A
Cited
US2945346A
Cited
US3040526A
Cited
US3040527A
Cited
US3070956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |