US3577952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system of propeller for ships
Assignee: Yanmar Co Ltd
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Filing: 1969-09-22
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Granted: 1971-05-11
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Expires: 1989-09-22
Abstract
Abstract An exhaust tube is mounted in an exhaust pipe connected to the exhaust port of the engine of a propeller apparatus. A deflector member defining obliquely radially extending channels and having a concaved outer surface is provided at the lower end of the exhaust tube integrally therewith, so as to divert the path of gas flow in the exhaust pipe and also repulse the water particles sucked up by being entrained by the wave of negative pressure of the engine reflecting on the surface of water present in the lower portion of the exhaust pipe.
Inventors
- 👤 Hiroshi Tado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/12; B; B63; B63H; B63H20/00; B63H20/24; B63H20/245; F02; F02B; F02B75/00; F02B75/16; F02B61/00; F02B61/04; F02B61/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
An exhaust system of a propeller for ships through which the exhaust of the propeller is discharged into water, said exhaust system comprising an exhaust pipe connected to the exhaust port of an engine and an exhaust tube mounted in said exhaust pipe, said exhaust tube being provided at its lower end with an integral deflector member which defines obliquely radially extending channels and has a concaved outer face.
Claim 2
Dependent Claim
69 words
An exhaust system of a propeller for ships through which the exhaust of the propeller is discharged into water, said exhaust system comprising an exhaust pipe connected to the exhaust port of an engine and an exhaust tube mounted in said exhaust pipe, said exhaust tube being provided at its lower end with an integral deflector member which defines obliquely radially extending channels and has a concaved outer face.
References Cited (Backward Citations)
US2144631A
Cited
US3310022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |