US5123372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladder arrangement for a watercraft
Assignee: Yamaha Motor Co Ltd
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Filing: 1991-02-27
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Granted: 1992-06-23
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Expires: 2011-02-27
Abstract
Abstract Apparatus for assisting in boarding or alighting a watercraft having a hull and a deck is disclosed and includes a ladder which is movable between a stowed position, in which it overlies a portion of the deck, and a deployed position in which it extends from the watercraft forwardly and downwardly of the deck to a landing area in order to assist in boarding or alighting the watercraft. The ladder is attached to the watercraft at a forward location thereof. In one embodiment, the ladder is pivotably mounted by means of a pair of spaced brackets to the deck of the watercraft. In another embodiment, the ladder is slidable within a pair of spaced mounting brackets and is adapted to engage a clip, attached to each mounting bracket, to enable the ladder to pivot to its deployed position. In a third embodiment, the ladder includes a pair of hinged sections with one of the sections being pivotably mounted to the deck at a forward location of the watercraft so that the second pivot can be located forward of the bow of the watercraft to enable the second section of the ladder to extend to the landing area when the ladder is in its deployed position. For use with each of the above described embodiments, the deck of the watercraft includes a recessed area in which the ladder lies when it is in its stowed position. In addition, various projections, which are longitudinally spaced with respect to the watercraft, are provided in the recessed area and are disposed between cross-pieces of the ladder when in its stowed position so as to locate the ladder and provide a stepping area for the occupants of the watercraft.
Inventors
- 👤 Noboru Kobayashi
- 👤 Tomoyoshi Koyanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:43
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/14
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
147 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a forward portion of said watercraft, a ladder being attached to said watercraft by said mounting means so as to be movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said ladder extends at least forwardly of the deck, said deck including a recessed area in which a substantial portion of said ladder lies when said ladder is in said stowed position, and said ladder including two longitudinal rails which are interconnected by a plurality of longitudinally spaced cross-pieces, said recessed area including a plurality of longitudinally spaced projections which extend upward from a base portion of said recessed area and project between said cross-pieces when said ladder is in said stowed position.
Claim 2
Dependent Claim
147 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a forward portion of said watercraft, a ladder being attached to said watercraft by said mounting means so as to be movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said ladder extends at least forwardly of the deck, said deck including a recessed area in which a substantial portion of said ladder lies when said ladder is in said stowed position, and said ladder including two longitudinal rails which are interconnected by a plurality of longitudinally spaced cross-pieces, said recessed area including a plurality of longitudinally spaced projections which extend upward from a base portion of said recessed area and project between said cross-pieces when said ladder is in said stowed position.
Claim 3
Dependent Claim
31 words
Apparatus as recited in claim 1, wherein said ladder is attached to its mounting means so as to be movable to a position below deck level and forward of the deck.
Claim 4
Dependent Claim
39 words
Apparatus as recited in claims 1 or 2, said mounting means includes pivot means secured to a forward portion of said deck, said pivot means providing a pivot axis for one end of the ladder, said axis extending athwartship.
Claim 5
Dependent Claim
62 words
Apparatus as recited in claim 3, wherein said pivot means includes bracket means comprising a pair of laterally spaced brackets, each of said brackets including sleeve portions which extend inwardly towards a longitudinal centerline of said watercraft, said one end of said ladder including means received in said sleeves for enabling said ladder to be pivotable between its stowed and deployed positions.
Claim 6
Dependent Claim
22 words
Apparatus as recited in claim 3, wherein said pivot means are mounted within a recess provided in the deck of said watercraft.
Claim 7
Dependent Claim
21 words
Apparatus as recited in claim 3, wherein said ladder comprises at least two sections which are pivotally interconnected by hinge means.
Claim 8
Dependent Claim
20 words
Apparatus as recited in claim 6, wherein said hinge means lies forward of the deck when the ladder is deployed.
Claim 9
Dependent Claim
20 words
Apparatus as recited in claim 7, wherein said mounting means is located rearward of the forward end of the deck.
Claim 10
Dependent Claim
32 words
Apparatus as recited in claim 6 including ladder holding means secured to said deck and adapted to receive a portion of said ladder to releasably retain said ladder in its stowed position.
Claim 11
Dependent Claim
35 words
Apparatus as recited in claim 1 or 2, further including cover means adapted to be secured to said deck and which overlies a portion of said ladder when said ladder is in its stowed position.
Claim 12
Dependent Claim
19 words
Apparatus as recited in claim 10, wherein the said ladder portion overlaid by the cover includes said mounting means.
Claim 13
Dependent Claim
102 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a forward portion of said watercraft, a ladder being attached to said watercraft by said mounting means so as to be movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said ladder extends at least forwardly of the deck, said mounting means comprising at least two brackets which are laterally spaced with respect to the longitudinal direction of said watercraft, said ladder being slidably mounted between said brackets.
Claim 14
Dependent Claim
102 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a forward portion of said watercraft, a ladder being attached to said watercraft by said mounting means so as to be movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said ladder extends at least forwardly of the deck, said mounting means comprising at least two brackets which are laterally spaced with respect to the longitudinal direction of said watercraft, said ladder being slidably mounted between said brackets.
Claim 15
Dependent Claim
40 words
Apparatus as recited in claim 12, wherein each of said brackets includes latch means which engage an end portion of said ladder to enable said ladder to pivot about said brackets when said ladder is moved to its deployed position.
Claim 16
Dependent Claim
26 words
Apparatus as recited in claim 13, wherein said latch means comprises a pair of clips, each of said clips being pivotally secured to a respective bracket.
Claim 17
Dependent Claim
34 words
Apparatus as recited in claim 14, wherein said deck includes a recessed area in which a substantial portion of said ladder lies when said ladder lies when said ladder is in said stowed position.
Claim 18
Dependent Claim
57 words
Apparatus as recited in claim 15, wherein said ladder includes two longitudinal rails which are inter-connected by a plurality of longitudinally spaced cross-pieces, said recessed area including a plurality of longitudinally spaced projections which extend upward from a base portion of said recessed area and project between said cross-pieces when said ladder is in said stowed position.
Claim 19
Dependent Claim
22 words
Apparatus as recited in claim 12, said brackets providing a pivot for the ladder, said pivot rotatable about an axis extending athwartship.
Claim 20
Dependent Claim
120 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a position rearward of the forward end of said watercraft, a ladder including a first portion and a second portion angled relative to each other, said first portion of said ladder being attached to said watercraft by said mounting means so that said ladder is movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said first portion of said ladder extends from said mounting means toward said forward end of said watercraft and said second portion is angled from said first portion toward an alighting area.
Claim 21
Dependent Claim
120 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a position rearward of the forward end of said watercraft, a ladder including a first portion and a second portion angled relative to each other, said first portion of said ladder being attached to said watercraft by said mounting means so that said ladder is movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said first portion of said ladder extends from said mounting means toward said forward end of said watercraft and said second portion is angled from said first portion toward an alighting area.
Claim 22
Dependent Claim
130 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a position rearward of the forward end of said watercraft, a ladder being attached to said watercraft by said mounting means so that said ladder is movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said ladder extends at least forwardly of the deck, said ladder including two longitudinal rails which are inter-connected by a plurality of longitudinally spaced cross-pieces, said rails straddling opposite sides of the forward end of the watercraft with said watercraft forward end disposed in longitudinally spaced relationship with adjacent cross pieces of the ladder in the deployed position of the ladder.
Claim 23
Dependent Claim
130 words
Apparatus for boarding and alighting a watercraft having a hull and a deck, said deck having mounting means secured thereto at a position rearward of the forward end of said watercraft, a ladder being attached to said watercraft by said mounting means so that said ladder is movable between a stowed position in which a substantial portion of said ladder overlies said deck and a deployed position in which said ladder extends at least forwardly of the deck, said ladder including two longitudinal rails which are inter-connected by a plurality of longitudinally spaced cross-pieces, said rails straddling opposite sides of the forward end of the watercraft with said watercraft forward end disposed in longitudinally spaced relationship with adjacent cross pieces of the ladder in the deployed position of the ladder.
References Cited (Backward Citations)
US4293967A
Cited
US4989691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |