US3347045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine jet propulsion units
Assignee: Cape Marine Propulsion Ltd
•
Filing: 1966-04-18
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Granted: 1967-10-17
•
Expires: 1986-04-18
Abstract
No abstract record available.
Inventors
- 👤 Warren Reginald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:52
CPC Classifications
B; B63; B63H; B63H11/00; B63H11/02; B63H11/10; B63H11/107; B63H11/117; B63H11/113
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
A JET PROPULSION UNIT COMPRISING AN AXIAL FLOW IMPELLER, AN IMPELLER DUCT INCLUDING A FRUSTO-CONICAL SECTION CLOSELY SURROUNDING THE IMPELLER, THE DIAMETER OF THE FRUSTO-CONICAL SECTION DECREASING IN THE DIRECTION FROM THE LEADING EDGES TOWARDS THE TRAILING EDGES OF THE BLADES OF THE IMPELLER, AND AT LEAST ONE SECTION SELECTED FROM AN INLET SECTION, EXTENDING FORWARDLY FROM THE FRUSTO-CONICAL SECTION, THE DIAMETER OF THE INLET SECTION INCREASING STEEPLY AND UNIFORMLY FROM THE FRUSTO-CONICAL SECTION, AND AN OUTLET SECTION OF SUBSTANTIALLY UNIFORM CROSS SECTION EXTENDING REARWARDLY FROM THE FRUSTO-CONICAL SECTION, THE INDIVIDUAL LENGTH OF SAID SECTIONS BEING NOT GREATER THAN THAT OF THE FRUSTO-CONICAL SECTION, AND THAT THE BOSS OF THE IMPELLER INCREASES IN DIAMETER FROM THE LEADING EDGES TO THE TRAILING EDGES OF BLADES EXTENDING FROM THE BOSS.
Claim 2
Dependent Claim
128 words
A JET PROPULSION UNIT COMPRISING AN AXIAL FLOW IMPELLER, AN IMPELLER DUCT INCLUDING A FRUSTO-CONICAL SECTION CLOSELY SURROUNDING THE IMPELLER, THE DIAMETER OF THE FRUSTO-CONICAL SECTION DECREASING IN THE DIRECTION FROM THE LEADING EDGES TOWARDS THE TRAILING EDGES OF THE BLADES OF THE IMPELLER, AND AT LEAST ONE SECTION SELECTED FROM AN INLET SECTION, EXTENDING FORWARDLY FROM THE FRUSTO-CONICAL SECTION, THE DIAMETER OF THE INLET SECTION INCREASING STEEPLY AND UNIFORMLY FROM THE FRUSTO-CONICAL SECTION, AND AN OUTLET SECTION OF SUBSTANTIALLY UNIFORM CROSS SECTION EXTENDING REARWARDLY FROM THE FRUSTO-CONICAL SECTION, THE INDIVIDUAL LENGTH OF SAID SECTIONS BEING NOT GREATER THAN THAT OF THE FRUSTO-CONICAL SECTION, AND THAT THE BOSS OF THE IMPELLER INCREASES IN DIAMETER FROM THE LEADING EDGES TO THE TRAILING EDGES OF BLADES EXTENDING FROM THE BOSS.
Claim 3
Dependent Claim
22 words
A JET PROPULSION UNIT AS CLAIMED IN CLAIM 1 IN WHICH THE THRUST FACE OF EACH IMPELLER BLADE COMPRISES A PLANE SURFACE.
Claim 4
Dependent Claim
122 words
A JET PROPULSION UNIT AS CLAIMED IN CLAIM 12, INCLUDING CONTROL MEANS COMPRISING A TUBULAR CASING ADAPTED TO BE MOUNTED DOWNSTREAM OF AND IN AXIAL ALIGNMENT WITH THE OUTLET OF THE JET PROPULSION UNIT SO AS TO CONSTITUTE A SECONDARY JET OUTLET, A STEERING DEFLECTOR MOUNTED WITHIN THE DOWNSTREAM END OF THE CASING FOR PIVOTAL MOVEMENT ABOUT A VERTICAL AXIS, VALVE MEANS PIVOTALLY MOUNTED WITHIN THE CASING UPSTREAM OF THE STERRING DEFLECTOR FOR MOVEMENT BETWEEN A POSITION IN WHICH THE TUBULAR CASING IS SUBSTANTIALLY UNOBSTRUCTED, AND A POSITION IN WHICH IT IS SUBSTANTIALLY OBTURATED, AND A FORWARDLY DIRECTED AUXILIARY JET OUTLET COMMUNICATING WITH THE TUBULAR CASING UPSTREAM OF THE VALVE MEANS, THE AUXILIARY JET OUTLET BEING ANGULARLY DISPLACEABLE IN A HORIZONTAL PLANE.
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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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |