US5743206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hull for small watercraft
Assignee: Yamaha Motor Co Ltd
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Filing: 1997-02-14
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Granted: 1998-04-28
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Expires: 2017-02-14
Abstract
Abstract An improved hull for watercraft provides a secondary access port to an engine compartment. The secondary access port facilitates service or maintenance of certain engine components (e.g., spark plugs) which are hard to reach from the main access port, whether due to distance from the main access port, angle of approach through the main access port, or obstruction of reach by other watercraft components. The hull design also provides enhanced lift of the watercraft, during initial acceleration, to a cruising position up on plane, and better control during sharp, high speed turns.
Inventors
- 👤 Toshiyuki Hattori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:20
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/04; B63B1/08; B63B34/00; B63B34/10; B63B1/16; B63B1/18; B63B2001/186
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
69 words
A small watercraft comprising a hull, said hull including at least two footrests positioned on either side of a pedestal located in a rider area, the pedestal comprising two side walls bridged by a seat, said hull defining an enclosed space below the seat, at least one of said pedestal side walls having a maintenance port therein communicating with the enclosed space to provide access to the enclosed space.
Claim 2
Dependent Claim
69 words
A small watercraft comprising a hull, said hull including at least two footrests positioned on either side of a pedestal located in a rider area, the pedestal comprising two side walls bridged by a seat, said hull defining an enclosed space below the seat, at least one of said pedestal side walls having a maintenance port therein communicating with the enclosed space to provide access to the enclosed space.
Claim 3
Dependent Claim
15 words
The small watercraft of claim 1, further comprising an engine housed within said enclosed space.
Claim 4
Dependent Claim
18 words
The small watercraft of claim 2, wherein said maintenance port communicates with said enclosed space proximate said engine.
Claim 5
Dependent Claim
22 words
The small watercraft of claim 3, wherein said maintenance port communicates with said enclosed space proximate a spark plug of said engine.
Claim 6
Dependent Claim
20 words
The small watercraft of claim 2, wherein said hull further comprises a primary access port communicating with said enclosed space.
Claim 7
Dependent Claim
22 words
The small watercraft of claim 5, wherein said primary access port is positioned to extend through an upper surface of said hull.
Claim 8
Dependent Claim
20 words
The small watercraft of claim 6 wherein said primary access port is at least partially removably covered by said seat.
Claim 9
Dependent Claim
33 words
The small watercraft of claim 7, further comprising an exhaust system communicating with said engine, wherein a portion of said exhaust system is interposed between said seat and at least one engine component.
Claim 10
Dependent Claim
14 words
The small watercraft of claim 8, wherein said engine component comprises a spark plug.
Claim 11
Dependent Claim
30 words
The small watercraft of claim 2, further comprising an exhaust system communicating with said engine, wherein a portion of said exhaust system is positioned below a cylinder of said engine.
Claim 12
Dependent Claim
18 words
The small watercraft of claim 2, wherein said engine has a plurality of cylinders arranged in a V-configuration.
Claim 13
Dependent Claim
20 words
The small watercraft of claim 1, wherein each of said pedestal side walls is connected to one of said footrests.
Claim 14
Dependent Claim
113 words
A small watercraft comprising a hull defining an engine compartment, and an internal combustion engine housed within said engine compartment, the engine including an engine body and at least one spark plug removably attached to said engine body and movable along a plug insertion axis, the hull including at least first and second maintenance ports communicating with said engine compartment, said first maintenance port being proximate to said spark plug and having a maintenance port axis suitably aligned with said plug insertion axis, and said second maintenance port being positioned above the engine and having a maintenance port axis which is skewed relative to the maintenance port axis of said first maintenance port.
Claim 15
Dependent Claim
113 words
A small watercraft comprising a hull defining an engine compartment, and an internal combustion engine housed within said engine compartment, the engine including an engine body and at least one spark plug removably attached to said engine body and movable along a plug insertion axis, the hull including at least first and second maintenance ports communicating with said engine compartment, said first maintenance port being proximate to said spark plug and having a maintenance port axis suitably aligned with said plug insertion axis, and said second maintenance port being positioned above the engine and having a maintenance port axis which is skewed relative to the maintenance port axis of said first maintenance port.
Claim 16
Dependent Claim
14 words
The small watercraft of claim 13, wherein said internal combustion engine has a V-configuration.
Claim 17
Dependent Claim
23 words
The small watercraft of claim 13, wherein said maintenance port axis diverges from said plug insertion axis by no more than about 90°.
Claim 18
Dependent Claim
23 words
The small watercraft of claim 13, wherein said maintenance port axis diverges from said plug insertion axis by no more than about 45°.
Claim 19
Dependent Claim
20 words
The small watercraft of claim 13, wherein said first maintenance port is positioned on a side wall of said hull.
Claim 20
Dependent Claim
86 words
A small watercraft comprising a hull defining an engine compartment, and an internal combustion engine housed within said engine compartment, the engine including an engine body and at least one spark plug removably attached to said engine body and movable along a plug insertion axis, the hull including a maintenance port communicating with said engine compartment proximate to said spark plug and having a maintenance port axis suitably aligned with said plug insertion axis, said maintenance port being positioned on a side wall of said hull.
Claim 21
Dependent Claim
86 words
A small watercraft comprising a hull defining an engine compartment, and an internal combustion engine housed within said engine compartment, the engine including an engine body and at least one spark plug removably attached to said engine body and movable along a plug insertion axis, the hull including a maintenance port communicating with said engine compartment proximate to said spark plug and having a maintenance port axis suitably aligned with said plug insertion axis, said maintenance port being positioned on a side wall of said hull.
Claim 22
Dependent Claim
68 words
A small watercraft comprising a hull defining an engine compartment, an engine housed within said engine compartment, said hull comprising a primary access port being in communication with said engine compartment and having a primary port axis, and a secondary access port being in communication with the engine compartment and having characterized by a secondary port axis, said secondary port axis oriented non-parallel to said primary port axis.
Claim 23
Dependent Claim
68 words
A small watercraft comprising a hull defining an engine compartment, an engine housed within said engine compartment, said hull comprising a primary access port being in communication with said engine compartment and having a primary port axis, and a secondary access port being in communication with the engine compartment and having characterized by a secondary port axis, said secondary port axis oriented non-parallel to said primary port axis.
Claim 24
Dependent Claim
23 words
The small watercraft of claim 19, wherein said hull further comprises an upper hatch covering at least in part said primary access port.
Claim 25
Dependent Claim
20 words
The small watercraft of claim 19, wherein said primary access port is at least partially covered by a removable seat.
Claim 26
Dependent Claim
20 words
The small watercraft of claim 19, wherein said secondary access port is positioned in a side wall of said hull.
Claim 27
Dependent Claim
22 words
The small watercraft of claim 19, wherein said hull further comprises a secondary access port cap removably covering said secondary access port.
Claim 28
Dependent Claim
22 words
The small watercraft of claim 19, wherein said secondary port axis diverges from said primary port axis by greater than about 45°.
Claim 29
Dependent Claim
23 words
The small watercraft of claim 19, wherein said secondary port axis diverges from said primary port axis by between about 80° and 90°.
Claim 30
Dependent Claim
49 words
A small watercraft comprising a hull having a bow portion and a stern portion, at least the stern portion of the hull including a convex lip defining a downward-facing open recess and at least one lip insert positioned at least partially within at least a portion of said recess.
Claim 31
Dependent Claim
49 words
A small watercraft comprising a hull having a bow portion and a stern portion, at least the stern portion of the hull including a convex lip defining a downward-facing open recess and at least one lip insert positioned at least partially within at least a portion of said recess.
Claim 32
Dependent Claim
26 words
The small watercraft of claim 26, wherein said lip is formed at a joint of an upper deck portion and lower hull portion of said hull.
Claim 33
Dependent Claim
26 words
The small watercraft of claim 26, wherein said lip insert extends toward the bow portion from an aft end of the stern portion of said hull.
Claim 34
Dependent Claim
16 words
The small watercraft of claim 26, wherein said lip insert comprises a downward sloping lower surface.
Claim 35
Dependent Claim
28 words
The small watercraft of claim 26, wherein said lip insert tapers in thickness toward a fore end such that said recess becomes more shallow toward an aft end.
Claim 36
Dependent Claim
21 words
The small watercraft of claim 30, wherein said recess extends about the entire periphery of the stern portion of the hull.
Claim 37
Dependent Claim
26 words
The small watercraft of claim 30 additionally comprising another said lip insert, said lip inserts being arranged within said recess on opposite sides of said hull.
Claim 38
Dependent Claim
44 words
A small motorized watercraft comprising a hull including at least one side edge, said side edge defining at least in part a downward-facing channel, at least a tapered portion of channel being tapered from a fore end to a relatively more shallow aft end.
Claim 39
Dependent Claim
44 words
A small motorized watercraft comprising a hull including at least one side edge, said side edge defining at least in part a downward-facing channel, at least a tapered portion of channel being tapered from a fore end to a relatively more shallow aft end.
Claim 40
Dependent Claim
23 words
The small motorized watercraft of claim 33, wherein said tapered portion of said channel extends about one quarter the length of the watercraft.
Claim 41
Dependent Claim
27 words
The small motorized watercraft of claim 33, wherein said tapered portion of said channel extends along said side edge hull to an aft end of the hull.
Claim 42
Dependent Claim
19 words
The small motorized watercraft of claim 33, wherein said side edge forms part of a bulwark of said hull.
Claim 43
Dependent Claim
68 words
The small motorized watercraft of claim 33, wherein said hull comprises another side edge that defines at least in part another downward facing channel, the another channel having at least a tapered portion that tapers from a fore and to a relatively more shallow aft end, and the another side edge being arranged such that said tapered portions of the channels lie on opposite sides of the hull.
Claim 44
Dependent Claim
23 words
The small motorized watercraft of claim 33, wherein said tapered portion of said channel has a linear shape from fore to aft end.
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) | 2001-04-27 | 2001-10-27 | 2002-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-27 | 2005-10-27 | 2006-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-27 | 2009-10-27 | 2010-04-28 | $7700.00 | Window Closed / Lapsed |