Patent US3537403A successfully refreshed from Google Patents.
Patent US3566149A successfully refreshed from Google Patents.
US4159110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding wheeled walker
Assignee: Individual
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Filing: 1978-01-23
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Granted: 1979-06-26
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Expires: 1998-01-23
Abstract
Abstract The walker disclosed herein comprises one equipped with wheels and is hinged at one or two front vertical supports so that it may be easily folded for carrying or for storage. In spite of its collapsible design, the walker is equipped with a locking device to prevent inadvertent folding, the locking device being one which is easily put into or removed from its locking position.
Inventors
- 👤 William J. Dodenhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:27
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2201/00; A61H2201/01; A61H2201/0161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A walker for use by invalids comprising: (a) a top handle bar having front and side portions on which an invalid rests his hands or arms for support: (b) a single vertical bar, (c) side sections attached to said vertical bar adapted to fold inwardly toward each other, each of said side framework supporting sections being tilted inwardly from bottom to top thereof, and said top handle bar being independent of said side framework supporting sections; (d) a swiveled wheel attached to the lower extremity of said vertical bar and a wheel attached to the lower extremity of each of said side framework supporting sections at a point farthest removed from said vertical bar; and (e) a locking mechanism which prevents inward movement of said side framework sections while said walker is in use; said vertical bar being tilted inwardly from the bottom to the top extremities thereof to a degree that said handle bar is located in a position such that the patient using said walker will not have his feet strike either said vertical bar or said side framework supporting sections.
Claim 2
Dependent Claim
183 words
A walker for use by invalids comprising: (a) a top handle bar having front and side portions on which an invalid rests his hands or arms for support: (b) a single vertical bar, (c) side sections attached to said vertical bar adapted to fold inwardly toward each other, each of said side framework supporting sections being tilted inwardly from bottom to top thereof, and said top handle bar being independent of said side framework supporting sections; (d) a swiveled wheel attached to the lower extremity of said vertical bar and a wheel attached to the lower extremity of each of said side framework supporting sections at a point farthest removed from said vertical bar; and (e) a locking mechanism which prevents inward movement of said side framework sections while said walker is in use; said vertical bar being tilted inwardly from the bottom to the top extremities thereof to a degree that said handle bar is located in a position such that the patient using said walker will not have his feet strike either said vertical bar or said side framework supporting sections.
References Cited (Backward Citations)
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Cited
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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) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |