Patent US5797902A successfully refreshed from Google Patents.
Patent US4094331A successfully refreshed from Google Patents.
US4094331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual purpose walking frame for handicapped persons
Assignee: Individual
•
Filing: 1977-02-16
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Granted: 1978-06-13
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Expires: 1997-02-16
Abstract
Abstract A dual purpose invalid walking frame for use on walking surfaces and on stairs comprising first support means defining at least three support points lying in two vertically separated planes and arranged to engage two stair surfaces; second support means defining at least three support points lying in a plane and arranged to engage a walking surface, the first and second support means being joined together in a rigid configuration defining a frame; first handle means disposed on the frame at a location suitable for supporting the hands of a person when the first support means are oriented downwardly and in stair engagement; and second handle means arranged on the frame and disposed at a location suitable for supporting the hands of a person when the frame is positioned such that the second support means are disposed downwardly and in engagement with a walking surface.
Inventors
- 👤 Peter Rozsa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:38
CPC Classifications
A; A61; A61H; A61H3/00; A61H2003/001
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
197 words
A dual purpose invalid walking frame for use on walking surfaces and on stairs comprising: first support means defining at least three support points lying in two vertically separated planes and arranged to engage two stair surfaces; second support means defining at least three support points lying in a plane and arranged to engage a walking surface, said first and second support means being fixedly joined together in a rigid configuration to define generally opposite ends of a frame; first handle means disposed on said frame at a location suitable for supporting the hands of a person descending stairs when said frame is positioned in a first orientation wherein said first support means are oriented downwardly and in stair engagement; second handle means arranged on said frame and disposed at a location suitable for supporting the hands of a person when said frame is positioned in a second orientation wherein said second support means are disposed downwardly and in engagement with a walking surface; and third handle means disposed on said frame at a location suitable for supporting the hands of a person ascending stairs when said first support means are oriented downwardly and in stair engagement.
Claim 2
Dependent Claim
197 words
A dual purpose invalid walking frame for use on walking surfaces and on stairs comprising: first support means defining at least three support points lying in two vertically separated planes and arranged to engage two stair surfaces; second support means defining at least three support points lying in a plane and arranged to engage a walking surface, said first and second support means being fixedly joined together in a rigid configuration to define generally opposite ends of a frame; first handle means disposed on said frame at a location suitable for supporting the hands of a person descending stairs when said frame is positioned in a first orientation wherein said first support means are oriented downwardly and in stair engagement; second handle means arranged on said frame and disposed at a location suitable for supporting the hands of a person when said frame is positioned in a second orientation wherein said second support means are disposed downwardly and in engagement with a walking surface; and third handle means disposed on said frame at a location suitable for supporting the hands of a person ascending stairs when said first support means are oriented downwardly and in stair engagement.
Claim 3
Dependent Claim
11 words
Apparatus according to claim 1, wherein said frame comprises tubular members.
Claim 4
Dependent Claim
28 words
Apparatus according to claim 1, wherein said frame comprises first and second tubular member assemblies arranged in a generally upstanding orientation and coupled together by transverse support means.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 1, wherein said first handle means are formed on the second support means and said second handle means are formed on said first support means.
Claim 6
Dependent Claim
44 words
Apparatus according to claim 1, wherein said first and second handle means are located at recessed positions on the respective second and first support means so as to avoid contact between the first and second handle means and respective walking surfaces and stair surfaces.
Claim 7
Dependent Claim
46 words
Apparatus according to claim 1, wherein means are provided for selectably adjusting the vertical separation between the first and second frame members on the one hand and respective first and second handle means on the other hand so as to accommodate persons of different body proportions.
Claim 8
Dependent Claim
35 words
Apparatus according to claim 1, wherein said first support means comprises means for selectable adjustment of the vertical separation between the two planes in which the support points lie to correspond to varying stair depths.
Claim 9
Dependent Claim
40 words
Apparatus according to claim 1 and including a transverse structural member positioned so as to limit the forward angular disposition of a person ascending stairs so as to prevent inadvertent backward falling of said person when raising said walking frame.
References Cited (Backward Citations)
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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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |