US3574399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheelchair including foot rests and arm rests
Assignee: Individual
•
Filing: 1969-05-15
•
Granted: 1971-04-13
•
Expires: 1989-05-15
Abstract
Abstract A wheelchair is provided with a footrest and an armrest at opposite sides thereof. The footrest and armrest on at least one side of the wheelchair are supported by a frame portion which is pivotable around an axis extending substantially perpendicular to an associated supporting surface, and locking means is provided to lock the frame portion in position. The frame portion includes two swingably interconnected parts along with means for adjusting the angle between the parts. The seat and backrest of the wheelchair are pivotable around an axis disposed adjacent the back of the seat and extending substantially parallel with an associated supporting surface.
Inventors
- 👤 Per Edward Carl Udden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:15
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/04; A61G5/041; A61G5/045; A61G5/10; A61G5/1051; A61G5/1054; A61G5/12; A61G5/125; A61G5/128; B; B60; B60K; B60K1/00; B62; B62D; B62D5/00; B62D51/00; B62D51/005; A61G2203/00; A61G2203/10; A61G2203/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
A wheelchair including footrests at opposite sides of the wheelchair and armrests at opposite sides of the wheelchair, the footrest and armrest on at least one side of the chair being supported by a frame portion which is pivotable around an axis extending substantially perpendicular to an associated support surface to enable the footrest and armrest on said one side of the chair to be simultaneously swung sidewards and outwardly to gain access to the chair and to leave the chair when so desired, and locking mEans for retaining said frame portion and the associated footrest and armrest in a predetermined locked position.
Claim 2
Dependent Claim
103 words
A wheelchair including footrests at opposite sides of the wheelchair and armrests at opposite sides of the wheelchair, the footrest and armrest on at least one side of the chair being supported by a frame portion which is pivotable around an axis extending substantially perpendicular to an associated support surface to enable the footrest and armrest on said one side of the chair to be simultaneously swung sidewards and outwardly to gain access to the chair and to leave the chair when so desired, and locking mEans for retaining said frame portion and the associated footrest and armrest in a predetermined locked position.
Claim 3
Dependent Claim
118 words
A wheelchair including footrests at opposite sides of the wheelchair and armrests at opposite sides of the wheelchair, the footrest and arm on at least one side of the chair being supported by a frame portion which is pivotable around an axis extending substantially perpendicular to an associated support surface, and locking means for retaining said frame portion and the associated footrest and armrest in a predetermined locked position, said frame portion including two parts swingably interconnected with one another about an axis, the axis corresponding to the level of the knee joint of a person sitting in the chair, screw means for controlling the angle between said swingably connected parts and means for operating said screw means.
Claim 4
Dependent Claim
118 words
A wheelchair including footrests at opposite sides of the wheelchair and armrests at opposite sides of the wheelchair, the footrest and arm on at least one side of the chair being supported by a frame portion which is pivotable around an axis extending substantially perpendicular to an associated support surface, and locking means for retaining said frame portion and the associated footrest and armrest in a predetermined locked position, said frame portion including two parts swingably interconnected with one another about an axis, the axis corresponding to the level of the knee joint of a person sitting in the chair, screw means for controlling the angle between said swingably connected parts and means for operating said screw means.
Claim 5
Dependent Claim
39 words
Apparatus as defined in claim 1 wherein said wheelchair includes a seat and backrest, said seat and backrest being pivotable around an axis disposed adjacent the rear of the seat and extending substantially parallel with an associated supporting surface.
Claim 6
Dependent Claim
33 words
Apparatus as defined in claim 2 including an electric motor for controlling the angle between the two swingably interconnected parts of the frame, and selectively operable contact devices for controlling said electric motor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |