Patent US2446458A successfully refreshed from Google Patents.
Patent US3584890A successfully refreshed from Google Patents.
US3584890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible wheelchair construction
Assignee: Delta Physical Therapy Associates
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Filing: 1969-04-01
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Granted: 1971-06-15
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Expires: 1989-04-01
Abstract
Abstract A wheelchair having removable arm rests capable of being fitted to the chair to extend forwardly thereof and provided with extensible and retractable supports engageable with the floor, thereby enabling the chair to be converted to a structure which may be utilized to assist a patient in rising from and returning to the chair. The supports may be provided with friction means or ground engaging wheels so as to permit it to be used as parallel bars, a pickup walker or a wheeled walker. A stabilizing bar interconnects the arm rests when they are in their forwardly extended positions so as to stabilize them.
Inventors
- 👤 Frank P Presty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:44
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/14; A61G7/00; A61G7/10; A61G7/1038; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
124 words
A wheelchair construction comprising a frame supporting a seat having forward and rearward ends; a pair of removable arm rests having front and rear ends; means for removably mounting said arm rests on said frame at opposite sides of the latter with the front and rear ends of said arm rests adjacent the forward and rearward ends of said seat; extensible and retractable means carried by said arm rests and adapted to provide supports therefor; and means for mounting one end of said arm rests at the forward end of said frame with the other end of said arm rests located forwardly and in prolongation of said seat, whereby said arm rests and said extensible and retractable means may provide support for a person.
Claim 2
Dependent Claim
124 words
A wheelchair construction comprising a frame supporting a seat having forward and rearward ends; a pair of removable arm rests having front and rear ends; means for removably mounting said arm rests on said frame at opposite sides of the latter with the front and rear ends of said arm rests adjacent the forward and rearward ends of said seat; extensible and retractable means carried by said arm rests and adapted to provide supports therefor; and means for mounting one end of said arm rests at the forward end of said frame with the other end of said arm rests located forwardly and in prolongation of said seat, whereby said arm rests and said extensible and retractable means may provide support for a person.
Claim 3
Dependent Claim
17 words
The construction set forth in claim 1 including friction means carried by said extensible and retractable means.
Claim 4
Dependent Claim
17 words
The construction set forth in claim 1 including wheel means carried by said extensible and retractable means.
Claim 5
Dependent Claim
26 words
The construction set forth in claim 1 wherein the means for removably mounting said arm rests at the forward and of said frame includes hinge means.
Claim 6
Dependent Claim
18 words
The construction set forth in claim 1 including stabilizing means for connecting said arm rests to one another.
Claim 7
Dependent Claim
29 words
The construction set forth in claim 1 including a substantially horizontal rail carried by each of said arm rests, and including means for adjusting each of said rails vertically.
Claim 8
Dependent Claim
15 words
The construction set forth in claim 1 wherein the first mentioned mounting means is nonrotatable.
Claim 9
Dependent Claim
124 words
An arm rest construction to a wheelchair having a frame on which is supported a seat having forward and rearward ends, said construction comprising an elongated bar having front and rear ends; means for removably mounting said bar on said frame selectively in a first substantially horizontal position along side said seat with the front and rear ends of said bar adjacent the forward and rearward ends of said seat or in a second substantially horizontal position with one end of said bar adjacent the forward end of said seat and the other end thereof located forwardly and in prolongation of said seat; and vertically adjustable ground engaging means carried by said bar at said other end thereof and adapted to provide support therefor.
Claim 10
Dependent Claim
124 words
An arm rest construction to a wheelchair having a frame on which is supported a seat having forward and rearward ends, said construction comprising an elongated bar having front and rear ends; means for removably mounting said bar on said frame selectively in a first substantially horizontal position along side said seat with the front and rear ends of said bar adjacent the forward and rearward ends of said seat or in a second substantially horizontal position with one end of said bar adjacent the forward end of said seat and the other end thereof located forwardly and in prolongation of said seat; and vertically adjustable ground engaging means carried by said bar at said other end thereof and adapted to provide support therefor.
Claim 11
Dependent Claim
20 words
The construction set forth in claim 8 including friction means carried by said ground engaging means at its lower end.
Claim 12
Dependent Claim
20 words
The construction set forth in claim 8 including wheel means carried by said ground engaging means at its lower end.
Claim 13
Dependent Claim
14 words
The construction set forth in claim 8 wherein said mounting means includes a hinge.
Claim 14
Dependent Claim
22 words
The construction set forth in claim 8 including means on said ground engaging means for connecting the latter to a stabilizing structure.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |