Patent US5619950A successfully refreshed from Google Patents.
US5619950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Watercraft
Assignee: Yamaha Motor Co Ltd
•
Filing: 1996-01-11
•
Granted: 1997-04-15
•
Expires: 2016-01-11
Abstract
Abstract A small personal watercraft having a number of features, such as a pair of rear-view mirrors which form a ventilating function for ventilating the engine compartment. The watercraft has a straddle-type motorcycle-like seat on which passengers may sit in straddle/tandem fashion and an engine. The major portions of its exhaust system are disposed beneath this seat. The exhaust system is centralized in the watercraft to maintain side-to-side balance, and a portion of the seat is removable for accessing the engine. Various grab-handle arrangements are also incorporated for assisting riders to maintain their stability or for assisting in entry of the watercraft from the body of water in which the watercraft is operated using a foldable ladder mounted on a rear deck to the rear of the seat.
Inventors
- 👤 Keijiroh Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:40
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
167 words
A watercraft comprised of a hull, a rider's area formed by said hull and including an elevated seating portion for accommodating a rider seated therein in straddle position, a pair of foot areas disposed in said rider's area on opposite sides of said elevated seating portion, a propulsion system for said hull and contained at least in part therein, said propulsion system comprising a propulsion device for propelling said hull, an internal combustion engine and a transmission for driving said propulsion device from said internal combustion engine, the upper surface of said elevated seating portion defining an access opening through which at least a portion to said propulsion device may be accessed, and a longitudinally extending seat covering at least a portion of said upper surface, said seat being comprised of a first portion affixed to said hull and spaced from said access opening and a second portion longitudinally spaced from said first portion and detachably connected to said hull and covering and closing said access opening.
Claim 2
Dependent Claim
167 words
A watercraft comprised of a hull, a rider's area formed by said hull and including an elevated seating portion for accommodating a rider seated therein in straddle position, a pair of foot areas disposed in said rider's area on opposite sides of said elevated seating portion, a propulsion system for said hull and contained at least in part therein, said propulsion system comprising a propulsion device for propelling said hull, an internal combustion engine and a transmission for driving said propulsion device from said internal combustion engine, the upper surface of said elevated seating portion defining an access opening through which at least a portion to said propulsion device may be accessed, and a longitudinally extending seat covering at least a portion of said upper surface, said seat being comprised of a first portion affixed to said hull and spaced from said access opening and a second portion longitudinally spaced from said first portion and detachably connected to said hull and covering and closing said access opening.
Claim 3
Dependent Claim
21 words
A watercraft as in claim 1, wherein a control for the longitudinally watercraft is disposed forwardly of the elevated seating portion.
Claim 4
Dependent Claim
16 words
A watercraft as in claim 2, wherein the forward most seat portion is the removable portion.
Claim 5
Dependent Claim
37 words
A watercraft as in claim 3, wherein the removable seat portion and elevated seating portion carry cooperating sealing surfaces for sealing the access opening when the removable seat portion is detachably affixed to the elevated seating portion.
Claim 6
Dependent Claim
36 words
A watercraft as in claim 1, wherein the removable seat portion and elevated seating portion carry cooperating sealing surfaces for sealing the access opening when the seat portion is detachably affixed to the elevated seating portion.
Claim 7
Dependent Claim
21 words
A watercraft as in claim 5, wherein the internal combustion engine is disposed at least in part beneath the access opening.
Claim 8
Dependent Claim
23 words
A watercraft as in claim 1, wherein the access opening extends longitudinally a lesser distance than the length of the second seat portion.
Claim 9
Dependent Claim
27 words
A watercraft as set forth in claim 1, wherein the rearward end of the access opening terminates forwardly of the rearward end of the second seat portion.
Claim 10
Dependent Claim
116 words
A watercraft as in claim 2, wherein the seat is adapted to accommodate a pair of riders seated in straddle tandem fashion one on each of the seat portions, the engine being positioned in an engine compartment extending at least in part beneath the forward portion of said elevated seating portion, said engine discharging exhaust gases to an exhaust manifold and from said exhaust manifold to a first expansion chamber device positioned adjacent the engine and beneath said elevated seating portion, exhaust conduit means conveying exhaust gases from said first expansion chamber to a water trap positioned substantially beneath said elevated seating portion, and means for discharging exhaust gases from said watertrap device to the atmosphere.
Claim 11
Dependent Claim
63 words
A watercraft as in claim 1, wherein the hull is further provided with a tunnel at the underside thereof and the propulsion device comprises a jet propulsion unit contained within said tunnel and comprised of a downwardly facing water inlet opening portion through which water is drawn by an impeller contained within an impeller portion to the rear of said water inlet portion.
Claim 12
Dependent Claim
53 words
A watercraft as in claim 1, wherein the rearward most longitudinal portion of the seat is elevated above the rear portion of said elevated seating portion and further including an insert piece contained between said elevated seating portion and the raised rear portion of said seat, said insert piece providing a grab handle.
References Cited (Backward Citations)
US4055140A
Cited
US4393802A
Cited
US4437841A
Cited
US4688508A
Cited
US4688509A
Cited
US4738642A
Cited
JPS62125989A
Cited
US4924797A
Cited
US5007870A
Cited
US5076190A
Cited
US4982682A
Cited
US5096446A
Cited
US5163394A
Cited
US5199913A
Cited
US5255626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-14 | 2000-10-14 | 2001-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-14 | 2004-10-14 | 2005-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-14 | 2008-10-14 | 2009-04-15 | $7700.00 | Window Closed / Lapsed |