Patent EP0145278A2 successfully refreshed from Google Patents.
EP0145278A2
Expired / Lapsed
EP
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Wheelchair
Assignee: Lieuse Technology Ltd
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Filing: 1984-11-09
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Granted: —
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Expires: 2004-11-09
Abstract
Abstract A wheelchair (1) comprises a carriage (3) consisting of two side frames (7) of moulded plastics construction interconnected by cross braces giving a folding action. A substantially rigid seat (2) comprises a substantially rigid seat base (6) having a seat back (5) pivoted thereto (at 4) and is releasable from the carriage by virtue of coaxial pegs (21,23) at each side of the carriage, engaging lugs (22) which completely enclose the studs and downwardly open grooves (17 in Figure 2) which can first of all engage the pegs (21,23). in order to ensure that the side frames are correctly spaced from one another (by downward pressure on the seat base) and then the seat base can be pushed rearwardly to engage the lugs (22) on the pegs to hold the seat and carriage together. A locking bolt (14) prevents the seat from moving forwardly, and hence being released, once the seat back (5) is erect. The wheelchair forms part of a system in which one seat (2) can fit two or more different types of carriage (3) having alternative propulsion mechanisms or being equipped for attendant-propulsion or occupant-propulsion.
Inventors
- 👤 Robert Fenwick
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:02
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/08; A61G5/0808; A61G5/0816; A61G5/0891; A61G5/10; A61G5/1054; A61G5/1083; A61G5/12; A61G5/125; A61G5/128; A61G5/04; A61G5/041; A61G5/045; Y; Y10; Y10S; Y10S180/00; Y10S180/907; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
58 words
A wheelchair system comprising a carriage (3), wheels (8,9) rotatably supported on the carriage, and a substantially rigid seat (2) removably connected to said carriage, characterised by further including an alternative carriage having a different wheel configuration to the first-mentioned carriage, said substantially rigid seat being adapted to be attached alternately to both of the two said carriages.
Claim 2
Dependent Claim
58 words
A wheelchair system comprising a carriage (3), wheels (8,9) rotatably supported on the carriage, and a substantially rigid seat (2) removably connected to said carriage, characterised by further including an alternative carriage having a different wheel configuration to the first-mentioned carriage, said substantially rigid seat being adapted to be attached alternately to both of the two said carriages.
Claim 3
Dependent Claim
107 words
A wheelchair system according to claim 1, characterised in that the carriage is foldable and includes first locating means and first retaining means (18,21) and the seat includes second locating means (17) and second retaining means (22), and the various said locating means and retaining means are arranged such that engagement of the locating means positions the seat relatively to the carriage and spreads the carriage to a fully erected configuration merely by resting the seat on the carriage, and in that sliding movement of the seat relative to the carriage brings said first and second retaining means into engagement to maintain the seat on the carriage.
Claim 4
Dependent Claim
126 words
A wheelchair system according to claim 2, characterised in that on each side of the carriage in the upper portion thereof is a horizontal bar (18,21), in that said second locating means comprise a downwardly open elongate recess (17) running along each side of the substantially rigid seat on the underside thereof and said first locating means comprise a co-operating upper surface of said bar on which the recess slidably rests; and in that said second retaining means comprise a bore extending parallel to and positioned as an extension of said recess, at each side of the seat, for enveloping the entire circumference of said bar, said bar upper surface constituting the first locating means and the remainder of the circumference constituting said first retaining means.
Claim 5
Dependent Claim
42 words
A wheelchair system according to claim 3, characterised by including forward (18) and rearward (21) said bars on each side of the carriage and respective forward and rearward recesses and bores on each side of the seat for engagement with said bars.
Claim 6
Dependent Claim
31 words
A wheelchair system according to claim 4, characterised in that said forward and rearward bars are co-axial with one another and said forward and rearward bores are co-axial with one another.
Claim 7
Dependent Claim
50 words
A wheelchair system according to any one of the preceding claims, characterised in that said substantially rigid seat includes a substantially rigid seat base (6) and a seat back (5) which is foldable relative to said base to bring the seat back and the seat base into substantially parallel relationship.
Claim 8
Dependent Claim
41 words
A wheelchair system according to any one of the preceding claims, characterised by including means (13) (127) for locking the seat relative to the carriage to prevent sliding movement of the seat in a direction to disengage the said retaining means.
Claim 9
Dependent Claim
30 words
A wheelchair system according to claims 6 and 7 taken together, characterised in that said locking means (127) also locks the seat back against folding relative to the seat base.
Claim 10
Dependent Claim
199 words
A wheelchair system according to any one of the preceding claims, characterised in that the carriage is formed of two side frames (7) each adapted to be equipped with a front wheel and a rear wheel; in that at least one (8) (108) of the wheels equipping each of the carriage side frames is mounted on a respective wheel carrier (10) (110) which is releasably engageable with said carriage side frame for allowing releasable attachment of said wheel to the carriage at that side of the carriage, and in that each wheel carrier and its associated side frame include interengaging means (37,40) (109,135) for preventing both play of the wheel carrier relative to the side frame in the sense of pivoting around a vertical axis, and play of the wheel carrier relative to the side frame in the sense of pivoting around a horizontal axis longitudinal to the side frame, said interengaging means comprising on the one hand a projection formed on one of the wheel carrier or the side frame and, on the other hand, a recess formed on the other of the wheel carrier and the side frame for receiving the said projection as a tight fit.
Claim 11
Dependent Claim
36 words
A wheelchair system according to claim 9, characterised in that each said wheel carrier includes means for fastening a rotatable wheel to said wheel carrier at different locations thereon for receiving respective wheels of different diameters.
References Cited (Backward Citations)
No citation records indexed.
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