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US4763680A Expired / Lapsed US ⏱️ 0.0 years remaining

Adjustable crutch with S-curve

Assignee: Individual
•
Filing: 1987-11-16
•
Granted: 1988-08-16
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Expires: 2007-11-16
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Abstract

Abstract A crutch is provided which is specifically designed for use by people who are overweight, or have scoliosis (a curvature of the spine condition), there being an S-curve defined in the upper portion of the crutch so that the crutch will comfortably fit into the underarm and yet bend out and continue downward spaced further out laterally from the body so that the hip of an overweight person or a person with scoliosis is detoured by the crutch. The crutch is made hinged and collapsible so that it is easier to store and transport to offset the slightly more cumbersome shape of the crutch because of the incorporation of the S-curve. The crutch also features three point adjustability so that the overall length of the crutch, and its length between the S-curve and underarm support, and between the handgrip and the ground and the handgrip and the underarm are independently adjustable.

Inventors

  • 👤 Adam Acosta, Sr.

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 10:38
CPC Classifications
A; A61; A61H; A61H3/00; A61H3/02

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 117 words
A crutch having: (a) an upper portion; (b) a lower portion extended from said upper portion; and, (c) said upper portion being comprised of a pair of spaced substantially parallel tubular support members with an underarm support passing across and between the tops thereof, said support members together extending down from said underarm support, each defining a first portion which is generally vertical in use, and each of said support members continuing downward from said first portion into a second portion which is deflected outwardly to clear the hip of the user, and continuing downwardly therefrom into a third portion which deflects back toward the user and is substantially vertical in use, parallel to said first portion.
Claim 2
Dependent Claim 117 words
A crutch having: (a) an upper portion; (b) a lower portion extended from said upper portion; and, (c) said upper portion being comprised of a pair of spaced substantially parallel tubular support members with an underarm support passing across and between the tops thereof, said support members together extending down from said underarm support, each defining a first portion which is generally vertical in use, and each of said support members continuing downward from said first portion into a second portion which is deflected outwardly to clear the hip of the user, and continuing downwardly therefrom into a third portion which deflects back toward the user and is substantially vertical in use, parallel to said first portion.
Claim 3
Dependent Claim 48 words
Structure according to claim wherein said upper and lower portions are hinged together and move from an extended mode in use, to a collapsed mode for storage or transportation, and said lower portion when collapsed falls substantially between the parallel support members of the upper portion for compactness.
Claim 4
Dependent Claim 38 words
Structure according to claim 1 wherein said upper portion mounts a handgrip between the third portions of said support members so that the handgrip is mounted in a substantially vertical region of the upper portion of said crutch.

References Cited (Backward Citations)

US1184575A Cited
US1666757A Cited
US2388778A Cited
US2741255A Cited
US2490380A Cited
US3213870A Cited
US3710807A Cited
US3886962A Cited
US4253478A Cited
US4291715A Cited
US4625743A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-08-16 1992-02-15 1992-08-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-08-16 1996-02-15 1996-08-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-08-16 2000-02-15 2000-08-16 $7700.00 Window Closed / Lapsed

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