Patent CH88280A successfully refreshed from Google Patents.
Patent US3576172A successfully refreshed from Google Patents.
US3576172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional flow exhaust regulator with fluid control
Assignee: Individual
•
Filing: 1969-06-09
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Granted: 1971-04-27
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Expires: 1989-06-09
Abstract
Abstract An exhaust system for an internal combustion engine in a boat having a first conduit through which gases are exhausted into the atmosphere, said first conduit communicating with a second conduit through which gases are exhausted under the water, a valve mounted on a bracket installed in said first conduit and having a closed position to exhaust gases through the second conduit and an open position to exhaust gases through the first conduit, a third conduit to direct a flow of water against said valve to establish and maintain said closed position when said boat is moving, and a cavitator disposed beneath the boat''s hull, and forwardly formed with a pressure chamber to receive water through a plurality of holes comprising an area greater than an escape hole so that water is forced through said escape hole into said third conduit under substantial pressure. The sidewalls of said cavitator are downwardly, outwardly angled to afford a downward pressure of water passing over said sidewalls to counteract any tendency of the cavitator to lift the boat from an even keel.
Inventors
- 👤 Lyle O Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:04
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
121 words
The combination with a boat having an internal combustion engine with an exhaust system, of an exhaust directional flow assembly incorporated in said system, said assembly including: a first conduit disposed to afford escape of exhaust gases into the atmosphere, a second conduit disposed to afford escape of exhaust gases into the water, a valve having an open position to exhaust gases from said first conduit and a closed position to exhaust gases from said second conduit, fluid flow means effective upon said valve to move said valve to its closed position when the boat moves, and an arcuately formed lever secured to said valve and upon which said fluid flow is directed to maintain said valve in its closed position.
Claim 2
Dependent Claim
121 words
The combination with a boat having an internal combustion engine with an exhaust system, of an exhaust directional flow assembly incorporated in said system, said assembly including: a first conduit disposed to afford escape of exhaust gases into the atmosphere, a second conduit disposed to afford escape of exhaust gases into the water, a valve having an open position to exhaust gases from said first conduit and a closed position to exhaust gases from said second conduit, fluid flow means effective upon said valve to move said valve to its closed position when the boat moves, and an arcuately formed lever secured to said valve and upon which said fluid flow is directed to maintain said valve in its closed position.
Claim 3
Dependent Claim
40 words
The combination as set forth in claim 1: means to provide water under pressure, said valve being disposed in said first conduit, and said fluid flow comprising a third conduit extending into said first conduit to direct said fluid flow.
Claim 4
Dependent Claim
87 words
The combination as set forth in claim 2: a bracket secured in said first conduit, said valve being mounted for rotation about an axis therein between said positions, said bracket having approximately parallel sidewalls, said valve being formed to accommodate said sidewalls, and said arcuate lever being disposed between said sidewalls when said valve is in said closed position to form a chamber therewith, whereby said chamber remains filled with water while the boat is in motion to resist return of said valve to its open position.
Claim 5
Dependent Claim
33 words
The combination as set forth in claim 3, means on said bracket to limit travel of said valve around said axis in one direction and to establish the Closed position of said valve.
Claim 6
Dependent Claim
32 words
The combination as set forth in claim 4, means on said bracket to limit travel of said valve around said axis in the other direction and to establish the open position thereof.
Claim 7
Dependent Claim
46 words
The combination as set forth in claim 5: a plate secured across said parallel walls to form a wall of said chamber, said third conduit having a fluid flow delivery end portion received and retained in said plate whereby said fluid flow is directed as desired.
Claim 8
Dependent Claim
50 words
The combination as set forth in claim 6: said parallel sidewalls terminating in outwardly, oppositely extending flanges, and said plate overlapping said flanges, screws securing said plate to said flanges, and having their threaded end portions projecting through said flanges to engage said valve and establish the open position thereof.
Claim 9
Dependent Claim
77 words
The combination as set forth in claim 1: a cavitator disposed beneath said boat and communicating with said fluid flow means, said cavitator being adapted to deliver a flow of water under pressure to said fluid flow means, said cavitator being formed with an exhaust-receiving chamber communicating with said second conduit, a perforate plate being disposed in said second conduit, whereby an exhaust stream emitting into said exhaust chamber is dispersed in a plurality of lesser streams.
Claim 10
Dependent Claim
58 words
The combination as set forth in claim 8: said exhaust chamber forwardly terminating in a pressure box, said box having a front wall, a plurality of water-receiving holes formed in said front wall, said pressure box having a rear wall, an aperture formed in said rear wall to afford a flow of water to said fluid flow means.
Claim 11
Dependent Claim
28 words
The combination as set forth in claim 8, said cavitator being formed with downwardly, outwardly divergent sidewalls, which receive a downward pressure from the passage of water thereon.
Claim 12
Dependent Claim
20 words
The combination as set forth in claim 10, said sidewalls diverging rearwardly of the boat hull to minimize water resistance.
Claim 13
Dependent Claim
59 words
The combination as set forth in claim 1: means to provide water under pressure, said fluid flow means being a third conduit communicating with said means and directing said water to said valve and to said lever, a cavitator disposed at the bottom of the boat hull, and communicating with the second conduit, and forming an exhaust outlet chamber.
Claim 14
Dependent Claim
43 words
The combination as set forth in claim 12: said cavitator forwardly terminating in a water pressure box, having a front wall formed with a plurality of perforations, a rear wall apertured to receive said third conduit to supply water to said third conduit.
References Cited (Backward Citations)
US2713841A
Cited
US3371645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |