Patent US1616465A successfully refreshed from Google Patents.
US4898508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low slung small vehicle
Assignee: Yamaha Motor Co Ltd
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Filing: 1987-06-30
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Granted: 1990-02-06
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Expires: 2007-06-30
Abstract
Abstract A number of embodiments of low, stable, self-propelled vehicles adapted to carry disabled, infirmed or elderly persons. In each embodiment there is provided a load carrying floor that has its upper surface spaced below the axis of rotation of the rear wheels and which may be raised or lowered for facilitating entry onto the floor. In many embodiments, a wheelchair is adapted to be supported on the floor and a movable stop pivots upon movement of the floor between a raised and a lowered position. In each position, the stop functions to retain a wheelchair in place.
Inventors
- 👤 Osamu Hayata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:41
CPC Classifications
A; A61; A61G; A61G3/00; A61G3/02; A61G3/06; A61G3/065; A61G5/00; A61G5/10; A61G5/1051; B; B62; B62D; B62D61/00; B62D61/06; B62D61/08; B62K; B62K5/00; B62K5/02; B62K5/023; B62K5/025; A61G2220/00; A61G2220/14; A61G2220/145; A61G5/04; A61G5/041; A61G5/045; A61G5/1056; A61G5/1072; Y; Y10; Y10S; Y10S180/00; Y10S180/907; Y10S414/00; Y10S414/134
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
224 words
A vehicle having a load carrying floor suspended from at least a pair of rear wheels and at lease one dirigible front wheel, a body comprising front walls and side walls, said front walls and said side walls each having a generally inverted box shape and defining said floor and open at the rear edge of said vehicle, said front wheel being supported relative to said body for steering movement about a steering axis and for rotation about a rotational axis, power means fixed relative to said body comprising an engine contained within said front wall and driving transmission means comprising a differential position within said front wall and a pair of chains each driven by an output shaft of said differential and extending through a respective one of said side walls for driving a respective one of said rear wheels for propulsion of said vehicle, and means for suspending said floor for pivotal movement about said rotational axis of said front wheel and for movement relative to said rear wheels from a lowered position wherein said floor is angularly disposed relative to the ground and said front wheel rotational axis of the rear edge of said floor is lowered to a ground engaging position and a raised position wherein said floor extends substantially horizontally and the rear edge thereof is above the ground.
Claim 2
Dependent Claim
224 words
A vehicle having a load carrying floor suspended from at least a pair of rear wheels and at lease one dirigible front wheel, a body comprising front walls and side walls, said front walls and said side walls each having a generally inverted box shape and defining said floor and open at the rear edge of said vehicle, said front wheel being supported relative to said body for steering movement about a steering axis and for rotation about a rotational axis, power means fixed relative to said body comprising an engine contained within said front wall and driving transmission means comprising a differential position within said front wall and a pair of chains each driven by an output shaft of said differential and extending through a respective one of said side walls for driving a respective one of said rear wheels for propulsion of said vehicle, and means for suspending said floor for pivotal movement about said rotational axis of said front wheel and for movement relative to said rear wheels from a lowered position wherein said floor is angularly disposed relative to the ground and said front wheel rotational axis of the rear edge of said floor is lowered to a ground engaging position and a raised position wherein said floor extends substantially horizontally and the rear edge thereof is above the ground.
Claim 3
Dependent Claim
38 words
A vehicle as set forth in claim 1 further including braking means carried by the body and engageable with the ground when the floor is in its lowered position for precluding movement of said vehicle above the ground.
Claim 4
Dependent Claim
41 words
A vehicle as set forth in claim 1 further including stop means adapted to extend across the rear edge of the floor for precluding an article loaded onto the floor from falling off when the vehicle is in its raised position.
Claim 5
Dependent Claim
45 words
A vehicle as set forth in claim 3 wherein the stop means is movable from a first position to its operative position extending across the rear edge of the floor in response to movement of the floor between its lowered position and its raised position.
Claim 6
Dependent Claim
55 words
A vehicle as set forth in claim 4 wherein the stop means is in overlying relationship to the floor in its first position for acting as a brake over which the wheels of a wheelchair or the like must pass when rolled onto the floor and to retard motion of said wheelchair when rolled thereacross.
Claim 7
Dependent Claim
33 words
A vehicle as set forth in claim 1 wherein the inner side surfaces of the sidewalls are positioned below the axles of a wheelchair that is adapted to be carried on the floor.
Claim 8
Dependent Claim
30 words
A vehicle as set forth in claim 6 further including grab rails affixed to said sidewalls and extending upwardly therefrom laterally outwardly of the inner side surfaces of said sidewalls.
Claim 9
Dependent Claim
22 words
A vehicle as set forth in claim 7 wherein the grab rails are formed by a raised outer section of the sidewalls.
Claim 10
Dependent Claim
17 words
A vehicle as set forth in claim 6 further including a roof carried by the grab rails.
Claim 11
Dependent Claim
16 words
A vehicle as set forth in claim 1 further including a seat carried by the floor.
Claim 12
Dependent Claim
60 words
A vehicle as set forth in claim 10 wherein the seat is pivotal between a rearwardly facing position and a forwardly facing position and the sidewalls are of such a height that they will not interfere with the legs of a person seated on the seat during the pivotal movement from the rearwardly facing position to the forwardly facing position.
Claim 13
Dependent Claim
20 words
A vehicle as set forth in claim 1 further including a steering shaft and mast for steering the dirigible wheel.
Claim 14
Dependent Claim
25 words
A vehicle as set forth in claim 12 wherein the steering shaft and mast are pivotal between a normal steering position and a lowered position.
Claim 15
Dependent Claim
51 words
A vehicle as set forth in claim 1 wherein the means for supporting the floor for movement relative to the rear wheels comprises a pair of links pivotally connected at a first position to the body and rotatably journaling the wheels at about an axis offset from said first pivotal connection.
Claim 16
Dependent Claim
19 words
A vehicle as set forth in claim 14 further including means for interconnecting said links for simultaneous pivotal movement.
Claim 17
Dependent Claim
48 words
A vehicle as set forth in claim 15 wherein the interconnecting means comprises a stop supported for pivotal movement relative to the body from a retracted position to an operative position extending across the rear edge of the vehicle for precluding an article from falling off the floor.
Claim 18
Dependent Claim
43 words
A vehicle as set forth in claim 16 wherein the stop means is juxtaposed to the floor in its retracted position for engagement with the wheel of a wheelchair rolled onto the floor for precluding the wheelchair from rolling off of the floor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |