US3814477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chair
Assignee: Individual
•
Filing: 1972-08-25
•
Granted: 1974-06-04
•
Expires: 1992-08-25
Abstract
Abstract A wheeled chair construction having a frame formed by a pair of identical, parallel side frame members and a pair of essentially identical seat frame members each having seat and wheel support portions joined one to each of side frame members in a vertically spaced relationship and a vertically inclined connecting portion extending transversely adjacent the rear of the chair for connecting the seat and wheel support portions.
Inventors
- 👤 E Mattsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:37
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/08; A61G5/0808; A61G5/0816; A61G5/0825; A61G5/10; A61G5/12; A61G5/125; A61G5/128; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
400 words
A wheeled chair comprising in combination: a chair frame, said frame including a pair of side frame members and a pair of seat frame members, each of said side frame members being defined by deforming a single piece of metallic tubing and including an upstanding handle-back rest part, a wheel support part extending forwardly from adjacent a lower end of said handle-back rest part, a lower front part extending upwardly from adjacent a forward end of said wheel support part, a seat part extending rearwardly from adjacent an upper end of said lower front part, a rear part upstanding from adjacent a rearward end of said seat part, an arm rest part extending forwardly from adjacent an upper end of said rear part and an upper front part extending downwardly from adjacent a forward end of said arm rest part and having a lower end thereof fixed adjacent the juncture of said lower front part and said seat part, said rear part being fixed to said handleback rest part, each of said seat frame members having a seat portion fixed to and extending substantially co-extensively with said seat part of one of said side frame members and cooperating therewith to define a seat support unit, a wheel support portion extending substantially coextensively with said wheel support part of an other of said side frame members and cooperating therewith to form a wheel support unit and a vertically inclined connecting portion for rigidly interconnecting the rearwardly disposed ends of said seat and wheel support portions, said seat portions being disposed vertically above said seat parts, said wheel support portions being disposed transversely inwardly of said wheel support parts; a pair of front wheel support devices associated one with each of said wheel support units for clampingly fixing together forward ends of its associated wheel support part and wheel support portion; a pair of front wheels mounted one by each of said front wheel support devices; a siNgle rear wheel support device extending transversely of said frame and being fixed to rearward ends of said wheel support parts and said wheel support portions; a pair of rear wheels mounted adjacent opposite ends of said rear wheel support device; a seat extending transversely of said chair frame and being supported by said seat support units; and a back rest extending transversely of said chair frame and being supported by said handle-back rest parts.
Claim 2
Dependent Claim
400 words
A wheeled chair comprising in combination: a chair frame, said frame including a pair of side frame members and a pair of seat frame members, each of said side frame members being defined by deforming a single piece of metallic tubing and including an upstanding handle-back rest part, a wheel support part extending forwardly from adjacent a lower end of said handle-back rest part, a lower front part extending upwardly from adjacent a forward end of said wheel support part, a seat part extending rearwardly from adjacent an upper end of said lower front part, a rear part upstanding from adjacent a rearward end of said seat part, an arm rest part extending forwardly from adjacent an upper end of said rear part and an upper front part extending downwardly from adjacent a forward end of said arm rest part and having a lower end thereof fixed adjacent the juncture of said lower front part and said seat part, said rear part being fixed to said handleback rest part, each of said seat frame members having a seat portion fixed to and extending substantially co-extensively with said seat part of one of said side frame members and cooperating therewith to define a seat support unit, a wheel support portion extending substantially coextensively with said wheel support part of an other of said side frame members and cooperating therewith to form a wheel support unit and a vertically inclined connecting portion for rigidly interconnecting the rearwardly disposed ends of said seat and wheel support portions, said seat portions being disposed vertically above said seat parts, said wheel support portions being disposed transversely inwardly of said wheel support parts; a pair of front wheel support devices associated one with each of said wheel support units for clampingly fixing together forward ends of its associated wheel support part and wheel support portion; a pair of front wheels mounted one by each of said front wheel support devices; a siNgle rear wheel support device extending transversely of said frame and being fixed to rearward ends of said wheel support parts and said wheel support portions; a pair of rear wheels mounted adjacent opposite ends of said rear wheel support device; a seat extending transversely of said chair frame and being supported by said seat support units; and a back rest extending transversely of said chair frame and being supported by said handle-back rest parts.
Claim 3
Dependent Claim
34 words
A chair according to claim 1, wherein integrally formed forwardly disposed ends of said wheel support portions extend forwardly of said wheel support parts to define foot rests for an occupant of said chair.
Claim 4
Dependent Claim
29 words
A chair according to claim 1, wherein a shelf extends transversely of said chair frame and is supported by said wheel support units intermediate said front and rear wheels.
Claim 5
Dependent Claim
63 words
A chair according to claim 1, wherein said seat is formed with opposite marginal edges looped to receive said seat portions, said back rest is formed with opposite marginal edges looped to receive said handle-back rest parts, and a shelf extends transversely of said chair frame beneath said seat, said shelf having opposite marginal edges thereof looped to receive said wheel support portions.
Claim 6
Dependent Claim
246 words
A frame for a wheeled chair, which comprises in combination: a pair of side frame members, each of said side frame members being of integral bent metal tubular construction and having sequentially end connected parts including an upstanding handle-back rest part, a lower forwardly extending wheel support part, a lower front part, a rearwardly extending seat part, an upstanding connector part, an upper forwardly extending arm rest part, and an upper front part, said upstanding connector part being fixed to said handle-back rest part, and said upper front part being lower end fixed adjacent the juncture of said lower front part and said seat part; and a pair of seat frame members, each of said seat frame members being of integral bent metal tubular construction and including a rearwardly extending seat portion fixed to said seat part of one of said side frame members, a forwardly extending wheel support portion fixed to said wheel support part of an other of said side frame members and a transversely extending connecting portion end connected to rearwardly disposed ends of said seat and wheel support portions, said seat portions being disposed vertically above and extending substantially coextensive with their associated seat parts, said wheel support portions being disposed transversely inwardly of and extending substantially coextensive with their associated wheel support parts, and said wheel support portions having forward end portions arranged forwardly of said side frame members and shaped to define foot rests for an occupant of said chair.
Claim 7
Dependent Claim
246 words
A frame for a wheeled chair, which comprises in combination: a pair of side frame members, each of said side frame members being of integral bent metal tubular construction and having sequentially end connected parts including an upstanding handle-back rest part, a lower forwardly extending wheel support part, a lower front part, a rearwardly extending seat part, an upstanding connector part, an upper forwardly extending arm rest part, and an upper front part, said upstanding connector part being fixed to said handle-back rest part, and said upper front part being lower end fixed adjacent the juncture of said lower front part and said seat part; and a pair of seat frame members, each of said seat frame members being of integral bent metal tubular construction and including a rearwardly extending seat portion fixed to said seat part of one of said side frame members, a forwardly extending wheel support portion fixed to said wheel support part of an other of said side frame members and a transversely extending connecting portion end connected to rearwardly disposed ends of said seat and wheel support portions, said seat portions being disposed vertically above and extending substantially coextensive with their associated seat parts, said wheel support portions being disposed transversely inwardly of and extending substantially coextensive with their associated wheel support parts, and said wheel support portions having forward end portions arranged forwardly of said side frame members and shaped to define foot rests for an occupant of said chair.
Claim 8
Dependent Claim
305 words
A wheeled chair comprising in combination: a pair of side frame members, each of said side frame members being of integral bent metal tubular construction and having sequentially end connected parts including an upstanding handle-back rest part, a lower forwardly extending wheel support part, a lower front part, a rearwardly extending seat part, an upstanding connector part, an upper forwardly extending arm rest part, and an upper front part, said upstanding connector part being fixed to said handle-back rest part, and said upper front part being lower end fixed adjacent the juncture of said lower front part and said seat part; a pair of seat frame members, each of said seat frame members being of integral bent metal tubular construction and including a rearwardly extending seat portion fixed to and extending substantially coextensive with said seat part of one of said side frame members to define a seat support unit, a forwardly extending wheel support portion fixed to and extending substantially coextensive with said wheel support part of an other of said side frame members to define a wheel support unit, and a transversely extending connecting portioN end connected to rearwardly disposed ends of said seat and wheel support portions; a single rear wheel support device extending transversely of said side frame members and being fixed to the rearward end of each said wheel support unit; a pair of front wheel support devices fixed one to each of said wheel support units for fixing together forward ends of its associated wheel support part and wheel support portion; a pair of rear wheels mounted adjacent opposite ends of said rear wheel support device; a pair of front wheels mounted one by each of said front wheel support devices; a seat supported by said seat support units; and a back rest supported by said handle-back rest parts.
Claim 9
Dependent Claim
305 words
A wheeled chair comprising in combination: a pair of side frame members, each of said side frame members being of integral bent metal tubular construction and having sequentially end connected parts including an upstanding handle-back rest part, a lower forwardly extending wheel support part, a lower front part, a rearwardly extending seat part, an upstanding connector part, an upper forwardly extending arm rest part, and an upper front part, said upstanding connector part being fixed to said handle-back rest part, and said upper front part being lower end fixed adjacent the juncture of said lower front part and said seat part; a pair of seat frame members, each of said seat frame members being of integral bent metal tubular construction and including a rearwardly extending seat portion fixed to and extending substantially coextensive with said seat part of one of said side frame members to define a seat support unit, a forwardly extending wheel support portion fixed to and extending substantially coextensive with said wheel support part of an other of said side frame members to define a wheel support unit, and a transversely extending connecting portioN end connected to rearwardly disposed ends of said seat and wheel support portions; a single rear wheel support device extending transversely of said side frame members and being fixed to the rearward end of each said wheel support unit; a pair of front wheel support devices fixed one to each of said wheel support units for fixing together forward ends of its associated wheel support part and wheel support portion; a pair of rear wheels mounted adjacent opposite ends of said rear wheel support device; a pair of front wheels mounted one by each of said front wheel support devices; a seat supported by said seat support units; and a back rest supported by said handle-back rest parts.
Claim 10
Dependent Claim
33 words
A chair according to claim 6, wherein said seat portions are disposed vertically above their associated seat parts, and said wheel support portions are disposed transversely inwardly of their associated wheel support parts.
Claim 11
Dependent Claim
40 words
A chair according to claim 7, wherein said seat portions are bolt affixed to their associated seat parts, and said front wheel support devices clampingly fix together forward ends of said wheel support portions and their associated wheel support parts.
Claim 12
Dependent Claim
276 words
A frame for a wheeled chair including: a pair of side frame members, each of said side frame members being of integral bent metal tubular construction and having sequentially end connected parts including an upstanding handle-back rest part, a lower forwardly extending wheel support part, a lower front part, a rearwardly extending seat part, an upstanding connector part, an upper forwardly extending arm rest part, and an upper front part, said upstanding connector part being fixed to said handle-back rest part, and said upper front part being lower end fixed adjacent the juncture of said lower front part and said seat part; a pair of seat frame members, each of said seat frame members being of integral bent metal tubular construction and including a rearwardly extending seat portion immovably fixed to and extending substantially coextensive with said seat part of one of said side frame members to define a seat support unit, a forwardly extending wheel support portion immovably fixed to and extending substantially coextensive with said wheel support part of an other of said side frame members to define a wheel support unit and a transversely extending connecting portion end connected to rearwardly disposed ends of said seat and wheel support portions, said wheel support portions having forward end portions arranged forwardly of said side frame members and shaped to define foot rests for an occupant of said chair; a pair of front wheel support devices fixed one with each of said wheel support units adjacent forward ends thereof; and a single rear wheel support device extending transversely of said frame and having its opposite ends fixed to rearward ends of said wheel support units.
Claim 13
Dependent Claim
276 words
A frame for a wheeled chair including: a pair of side frame members, each of said side frame members being of integral bent metal tubular construction and having sequentially end connected parts including an upstanding handle-back rest part, a lower forwardly extending wheel support part, a lower front part, a rearwardly extending seat part, an upstanding connector part, an upper forwardly extending arm rest part, and an upper front part, said upstanding connector part being fixed to said handle-back rest part, and said upper front part being lower end fixed adjacent the juncture of said lower front part and said seat part; a pair of seat frame members, each of said seat frame members being of integral bent metal tubular construction and including a rearwardly extending seat portion immovably fixed to and extending substantially coextensive with said seat part of one of said side frame members to define a seat support unit, a forwardly extending wheel support portion immovably fixed to and extending substantially coextensive with said wheel support part of an other of said side frame members to define a wheel support unit and a transversely extending connecting portion end connected to rearwardly disposed ends of said seat and wheel support portions, said wheel support portions having forward end portions arranged forwardly of said side frame members and shaped to define foot rests for an occupant of said chair; a pair of front wheel support devices fixed one with each of said wheel support units adjacent forward ends thereof; and a single rear wheel support device extending transversely of said frame and having its opposite ends fixed to rearward ends of said wheel support units.
References Cited (Backward Citations)
US2084310A
Cited
US2379566A
Cited
US2402085A
Cited
US2486015A
Cited
US2618316A
Cited
US2460459A
Cited
US2629432A
Cited
US2914111A
Cited
US3054638A
Cited
US3390893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |