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US4253678A Expired / Lapsed US ⏱️ 0.0 years remaining

Invalid walker

Assignee: Individual
•
Filing: 1979-11-26
•
Granted: 1981-03-03
•
Expires: 1999-11-26
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Abstract

Abstract An invalid walker is disclosed. The walker comprises a pair of side frames each including two vertical legs joined by transverse members, an X-shaped frame comprising two cross-members pivotally connected to each other and joining the side frames at the front of the walker, with the upper ends of the cross-members being pivotally mounted on the upper ends of the legs and the lower ends of said cross-members being slidably mounted on the lower ends of the legs for permitting folding of the walker, a removable seat assembly which may be mounted on the side frames at the rear of the walker after entrance of the invalid into the walker, and means at the side frames at the front of the walker for maintaining the side frames apart during use.

Inventors

  • 👤 Stanislas Leclerc

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 11:56
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/04; A61H2003/002; A61H2003/004; A61H2003/046; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1628; A61H2201/1633

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 169 words
An invalid walker comprising: (a) a pair of side frames each including two vertical legs joined by transverse members; (b) an X-shaped frame comprising two cross-members pivotally connected to each other and joining the two side frames at the front of the walker, with the upper ends of said cross-members being pivotally mounted on the upper ends of the legs and the lower ends of said cross-members being slidably mounted on the lower ends of the legs for permitting folding of the walker; (c) a removable seat assembly which may be mounted on the side frames at the rear of the walker after entrance of the invalid person into the walker; (d) means for bridging the side frames at the front of the walker for maintaining the side frames apart during use and (e) wherein the lower end of each front leg is formed of two spaced leg members, and the lower ends of the cross-members are provided with a pin which can slide between the two leg members.
Claim 2
Dependent Claim 169 words
An invalid walker comprising: (a) a pair of side frames each including two vertical legs joined by transverse members; (b) an X-shaped frame comprising two cross-members pivotally connected to each other and joining the two side frames at the front of the walker, with the upper ends of said cross-members being pivotally mounted on the upper ends of the legs and the lower ends of said cross-members being slidably mounted on the lower ends of the legs for permitting folding of the walker; (c) a removable seat assembly which may be mounted on the side frames at the rear of the walker after entrance of the invalid person into the walker; (d) means for bridging the side frames at the front of the walker for maintaining the side frames apart during use and (e) wherein the lower end of each front leg is formed of two spaced leg members, and the lower ends of the cross-members are provided with a pin which can slide between the two leg members.

References Cited (Backward Citations)

CA210961A Cited
CA213958A Cited
CA361042A Cited
CA432983A Cited
US2733754A Cited
US2734554A Cited
CA885241A Cited
US2129260A Cited
US2369040A Cited
US2866495A Cited
US3232251A Cited
US4046374A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-03-02 1984-09-01 1985-03-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-03-02 1988-09-01 1989-03-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-03-02 1992-09-01 1993-03-03 $7700.00 Window Closed / Lapsed

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