US3121469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust diffuser and silencer for inboard motor boats
Assignee: "CAP" SCHELF AND ASSOCIATES Inc
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Filing: 1961-01-23
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Granted: 1964-02-18
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Schelf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:43
CPC Classifications
B; B63; B63G; B63G13/00; B63G13/02; F; F01; F01N; F01N1/00; F01N1/16; F01N1/18; Y; Y10; Y10S; Y10S60/00; Y10S60/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A DIFFUSER FOR USE WITH AN EXHAUST PIPE THROUGH WHICH IS VENTED BOTH HOT EXHAUST GASES AND HOT WATER COMPRISING A HOUSING, SAID HOUSING HAVING AN INLET APERTURE COUPLED TO SAID PIPE TO RECEIVE THE GASES AND WATER VENTED THROUGH SAID PIPE, SAID HOUSING EXTENDING FROM SAID INLET APERTURE IN A CHAMBER TERMINATING IN AN EXIT APERTURE ANGLED AWAY FROM THE AXIS OF SAID PIPE, AN IMPELLEER ROTATABLY MOUNTED WITHIN SAID EXIT APERTURE, THE AXIS OF ROTATION OF SAID IMPELLER BEING TRANSVERSE TO THE AXIS OF SAID PIPE, SAID IMPELLER BEING POSITIONED SO THAT THE VENTED WATER AND GAS WILL IMPINGE ON SAID IMPELLER TO ROTATABLY DRIVE SAID IMPELLER, THE ROTATION OF SAID IMPELLER THROWING SAID WATER INTO SAID EXHAUST GASES IN A SPRAY THEREBY TO COOL SAID WATER AND GASES WITHIN SAID CHAMBER.
Claim 2
Dependent Claim
134 words
A DIFFUSER FOR USE WITH AN EXHAUST PIPE THROUGH WHICH IS VENTED BOTH HOT EXHAUST GASES AND HOT WATER COMPRISING A HOUSING, SAID HOUSING HAVING AN INLET APERTURE COUPLED TO SAID PIPE TO RECEIVE THE GASES AND WATER VENTED THROUGH SAID PIPE, SAID HOUSING EXTENDING FROM SAID INLET APERTURE IN A CHAMBER TERMINATING IN AN EXIT APERTURE ANGLED AWAY FROM THE AXIS OF SAID PIPE, AN IMPELLEER ROTATABLY MOUNTED WITHIN SAID EXIT APERTURE, THE AXIS OF ROTATION OF SAID IMPELLER BEING TRANSVERSE TO THE AXIS OF SAID PIPE, SAID IMPELLER BEING POSITIONED SO THAT THE VENTED WATER AND GAS WILL IMPINGE ON SAID IMPELLER TO ROTATABLY DRIVE SAID IMPELLER, THE ROTATION OF SAID IMPELLER THROWING SAID WATER INTO SAID EXHAUST GASES IN A SPRAY THEREBY TO COOL SAID WATER AND GASES WITHIN SAID CHAMBER.
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |