Patent US3780712A successfully refreshed from Google Patents.
US3780712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine engine cooling
Assignee: Acustar Inc
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Filing: 1972-11-13
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Granted: 1973-12-25
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Expires: 1992-11-13
Abstract
Abstract Improved water jacketed manifolds for marine engine cooling systems of the type wherein heated water which has circulated through an engine cooling system for cooling purpose is mixed in the improved engine exhaust manifold water jacket according to this invention with raw, relatively cool water to controllably cool the manifold and avoid condensing water from the exhaust gases flowing through the exhaust manifold.
Inventors
- 👤 J Pace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:29
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/14; F01N; F01N3/00; F01N3/02; F01N3/04; F28; F28D; F28D7/00; F28D7/10; F28D7/106; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
89 words
A water jacketed marine engine manifold comprising: a central conduit for carrying exhaust gases from the engine; a water jacket surrounding the central conduit; a water inlet and outlet pair in the jacket adapted to be connected to an engine cooling system for circulating water through the jacket; another water inlet and outlet pair in the jacket for providing a flow of raw water therethrough, the inlet and outlet being closely disposed relative to each other and in a higher position in the jacket then the first mentioned pair.
Claim 2
Dependent Claim
89 words
A water jacketed marine engine manifold comprising: a central conduit for carrying exhaust gases from the engine; a water jacket surrounding the central conduit; a water inlet and outlet pair in the jacket adapted to be connected to an engine cooling system for circulating water through the jacket; another water inlet and outlet pair in the jacket for providing a flow of raw water therethrough, the inlet and outlet being closely disposed relative to each other and in a higher position in the jacket then the first mentioned pair.
Claim 3
Dependent Claim
98 words
The manifold according to claim 1 wherein: the raw water inlet is substantially at one end of the jacket and the raw water outlet is provided by the open end of a horizontally disposed tube in the jacket; the open end thereof being disposed relatively close to the raw water inlet, the opposite end of the tube being connected to an outlet opening at the substantially opposite end of the jacket whereby alternate paths for water entering the raw water inlet are established, the first path being through the tube, the second path being through the jacket proper.
Claim 4
Dependent Claim
33 words
The manifold according to claim 2 wHerein: the tube is made of a heat exchange material to promote heat exchange between the cool water flowing therethrough and the heated water in the jacket.
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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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |