US4984528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venting and drain arrangement for small watercraft
Assignee: Yamaha Motor Co Ltd
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Filing: 1989-11-27
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Granted: 1991-01-15
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Expires: 2009-11-27
Abstract
Abstract A venting and drain arrangement for a small watercraft that is formed with a tunnel in which the propulsion unit for the watercraft is formed. The venting arrangement includes a vent pipe that extends through a venting recess formed in the hull to the engine compartment. A well is formed in the venting recess in which water can accumulate and a drain conduit extends from the well to the tunnel for discharging water to the body of water in which the watercraft is operating without necessitating holes that will be visible when the watercraft is operating.
Inventors
- 👤 Noboru Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:17
CPC Classifications
B; B63; B63J; B63J2/00; B63J2/02; B63J2/06; B63B; B63B13/00; B63B34/00; B63B34/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
A hull construction for a small watercraft defining a tunnel on the underside of said hull for containing at least in part a propulsion unit, an engine compartment formed within said hull for accommodating an internal combustion engine for driving said propulsion unit, a venting recess formed in an upper portion of said hull, a vent pipe extending through said hull in said venting recess from an inlet end communicating with the atmosphere to an outlet end communicating with said engine compartment, a well formed by said venting recess in which water may accumulate, and drain means extending from said well to said tunnel for draining water from said well to the body of water in which said watercraft is operating.
Claim 2
Dependent Claim
121 words
A hull construction for a small watercraft defining a tunnel on the underside of said hull for containing at least in part a propulsion unit, an engine compartment formed within said hull for accommodating an internal combustion engine for driving said propulsion unit, a venting recess formed in an upper portion of said hull, a vent pipe extending through said hull in said venting recess from an inlet end communicating with the atmosphere to an outlet end communicating with said engine compartment, a well formed by said venting recess in which water may accumulate, and drain means extending from said well to said tunnel for draining water from said well to the body of water in which said watercraft is operating.
Claim 3
Dependent Claim
39 words
A hull construction as set forth in claim 1 wherein the hull further forms a protective cowling portion extending over the inlet end of said vent pipe and defining an opening for admitting atmospheric air to the venting recess.
Claim 4
Dependent Claim
18 words
A hull construction as set forth in claim 2 wherein the well extends transversely across the venting recess.
Claim 5
Dependent Claim
22 words
A hull construction as set forth in claim 3 wherein the drain means has an inlet opening positioned centrally of the well.
Claim 6
Dependent Claim
54 words
A hull construction as set forth in claim 1 wherein the tunnel is formed so that at least the upper portion of the tunnel is disposed above the level of water when the hull is operating therein and the drain means outlet opening extends into the portion of the tunnel above the water level.
Claim 7
Dependent Claim
39 words
A hull construction as set forth in claim 5 wherein the hull further forms a protective cowling portion extending over the inlet end of said vent pipe and defining an opening for admitting atmospheric air to the venting recess.
Claim 8
Dependent Claim
18 words
A hull construction as set forth in claim 6 wherein the well extends transversely across the venting recess.
Claim 9
Dependent Claim
22 words
A hull construction as set forth in claim 7 wherein the drain means has an inlet opening positioned centrally of the well.
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) | 1994-01-14 | 1994-07-16 | 1995-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-14 | 1998-07-16 | 1999-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-14 | 2002-07-16 | 2003-01-15 | $7700.00 | Window Closed / Lapsed |