Patent US3972443A successfully refreshed from Google Patents.
Patent US3937490A successfully refreshed from Google Patents.
US3937490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheelchair
Assignee: Individual
•
Filing: 1974-06-25
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Granted: 1976-02-10
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Expires: 1994-06-25
Abstract
Abstract A wheelchair having adjustability to suit several body sizes and deformities in that the width of the seat and back rest panels may be adjusted, the height of the seat and arm rests may be adjusted independently of one another, and the length of the seat may be adjusted.
Inventors
- 👤 Ibrahim Abdelrahim Mohamed Nasr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1056; A61G5/1059; A61G5/1062; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
134 words
A wheelchair including a chassis comprising spaced side frame means and adjustable interconnecting frame means extending between said side frame means; ground wheels mounted on said chassis; a flexible seat panel extending between said side frame means; means on said seat panel defining spaced attachment points for attaching said seat panel to both of said side frame means; a flexible back rest panel extending between and attached to the side frame means; means on said back rest panel defining spaced attachment points for attaching said back rest panel to both of said side frame means; and means for adjusting the length of said seat and back rest panels between their points of attachment to the side frames for varying the width of the seat of the chair to suit different widths of intended occupant.
Claim 2
Dependent Claim
134 words
A wheelchair including a chassis comprising spaced side frame means and adjustable interconnecting frame means extending between said side frame means; ground wheels mounted on said chassis; a flexible seat panel extending between said side frame means; means on said seat panel defining spaced attachment points for attaching said seat panel to both of said side frame means; a flexible back rest panel extending between and attached to the side frame means; means on said back rest panel defining spaced attachment points for attaching said back rest panel to both of said side frame means; and means for adjusting the length of said seat and back rest panels between their points of attachment to the side frames for varying the width of the seat of the chair to suit different widths of intended occupant.
Claim 3
Dependent Claim
115 words
A wheelchair as set forth in claim 1, wherein the seat and back rest panels each comprise a web of flexible material and said attachment point defining means each comprise end portions of the material doubled over to form loops wherein said side frame means each include support posts around one of which the respective end of the seat panel may be folded and around the other of which the respective end of the back rest panel may be folded; and wherein means are provided for securing each doubled over material portion of the seat and back rest panels respectively to a different region of the same panel to adjust the length of the panel.
Claim 4
Dependent Claim
45 words
A wheelchair as set forth in claim 2, wherein the said securing means comprise a row of press stud means along one end of each web and at least two further rows of co-operating stud means parallel thereto, spaced inwardly from the said one end.
Claim 5
Dependent Claim
34 words
A wheelchair as set forth in claim 2, wherein both ends of the seat panel and both ends of the back rest panel have means for adjusting the position of the doubled over portion.
Claim 6
Dependent Claim
52 words
A wheelchair as set forth in claim 1, wherein said adjustable interconnecting frame means comprises telescopically interfitting tube means with means for locking the interfitting tube means in any one of several configurations of different length, and means securing each end of the interfitting tube means to a respective side frame means.
Claim 7
Dependent Claim
36 words
A wheelchair as set forth in claim 2, wherein the two seat panel support posts extend horizontally and means are provided for mounting each seat panel support post vertically movably on one of said side frames.
Claim 8
Dependent Claim
46 words
A wheelchair as set forth in claim 6, and including arm rests carried by said side frames, and means for adjustably positioning said arm rests above said horizontal seat panel support posts, said arm rests being free of direct connection to said back rest support posts.
Claim 9
Dependent Claim
58 words
A wheelchair as set forth in claim 7, wherein each arm rest comprises a generally horizontal arm support carried at the top end of an arm rest support pillar, said pillar being slidable vertically relative to a socket of a respective one of the side frames and lockable in a number of alternative positions relative to said socket.
Claim 10
Dependent Claim
51 words
A wheelchair as set forth in claim 2, wherein the back rest support posts are mounted generally upright on said side frame means, and means are provided for adjusting said back rest support posts with respect to the side frame means in a direction longitudinally of the seat panel support members.
Claim 11
Dependent Claim
34 words
A wheelchair as set forth in claim 1, including foot rest means carried by said side frame means, and means for adjusting the positioning of said foot rest means vertically relative to said chassis.
Claim 12
Dependent Claim
65 words
A wheelchair as set forth in claim 10, wherein said foot rest means consists of two foot rests, foot rest support posts each carrying a respective foot rest, support tubes of the side frame means each slidably receiving a respective foot rest support post, and means for locking each support post in any one of a number of positions relative to its associated support tube.
Claim 13
Dependent Claim
156 words
A wheelchair including a chassis, ground wheels carried by said chassis, arm rest means carried by said chassis at each side of the chair, a generally horizontal seat panel, seat panel support means extending horizontally along said chassis below each arm rest means for supporting said seat panel, means mounting said seat panel support means on said chassis for adjustable positioning in a vertical direction relative to said chassis, a generally vertical back rest panel, back rest support pillars extending generally upwardly from said seat panel support means, and means mounting said back rest panel support pillars on said seat panel support means of said chassis in one of several positions spaced in a horizontal direction along said seat panel support means said support pillar mounting means comprising a plurality of longitudinally spaced vertical sockets in said seat panel support means for securing said support pillars, and pillar engaging fastening means for securing said pillars therein.
Claim 14
Dependent Claim
156 words
A wheelchair including a chassis, ground wheels carried by said chassis, arm rest means carried by said chassis at each side of the chair, a generally horizontal seat panel, seat panel support means extending horizontally along said chassis below each arm rest means for supporting said seat panel, means mounting said seat panel support means on said chassis for adjustable positioning in a vertical direction relative to said chassis, a generally vertical back rest panel, back rest support pillars extending generally upwardly from said seat panel support means, and means mounting said back rest panel support pillars on said seat panel support means of said chassis in one of several positions spaced in a horizontal direction along said seat panel support means said support pillar mounting means comprising a plurality of longitudinally spaced vertical sockets in said seat panel support means for securing said support pillars, and pillar engaging fastening means for securing said pillars therein.
Claim 15
Dependent Claim
28 words
A wheelchair as set forth in claim 12, and including means for adjusting the position of said foot rest means in a vertical direction relative to said chassis.
Claim 16
Dependent Claim
148 words
A wheelchair including a chassis; arm rest means carried by said chassis; seat panel support means extending horizontally along said chassis below each of said arm rest means; vertical tubular support means under each arm rest means and carrying said seat panel support means; means on each side of said chassis for slidably receiving said vertical tubular support means; means for locking said tubular support means in any one of several vertically spaced positions relative to said receiving means; a generally vertical arm rest support pillar under each arm rest means and carrying said arm rest, said arm rest support pillar being adapted to be slidably received in said tubular support means; means locking said arm rest support pillars in any one of a plurality of vertically spaced positions relative to said tubular support means; and a generally horizontal seat panel carried by said seat panel support means.
Claim 17
Dependent Claim
148 words
A wheelchair including a chassis; arm rest means carried by said chassis; seat panel support means extending horizontally along said chassis below each of said arm rest means; vertical tubular support means under each arm rest means and carrying said seat panel support means; means on each side of said chassis for slidably receiving said vertical tubular support means; means for locking said tubular support means in any one of several vertically spaced positions relative to said receiving means; a generally vertical arm rest support pillar under each arm rest means and carrying said arm rest, said arm rest support pillar being adapted to be slidably received in said tubular support means; means locking said arm rest support pillars in any one of a plurality of vertically spaced positions relative to said tubular support means; and a generally horizontal seat panel carried by said seat panel support means.
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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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |