Crutch for use on an icy surface

Details Crutch for use on an icy surface Crutch for use on an icy surface

1982-04-30

1984-05-29

Hafer, Robert A.

Tent, canopy, umbrella, or cane

Canes, sticks, crutches, and walking aids

Tips

A61H 302

Patent

active

044508506

ABSTRACT:
A conventional crutch having a ground engaging blunted tip member adapted to frictionally engage a finished ground surface. A second ground engaging member having a sharp tip adapted to be stuck into an icy surface is fixedly attached to and spaced from the crutch member. In one position, with the crutch assembly slanting downwardly and outwardly from the person, the point of the second member is above the ground surface. However, by rotating the crutch assembly 180 degrees from the first position, the point of the second member comes into ground engagement to firmly engage an icy surface. The blunted tip is compressible and the sharp tip is disposed slightly above the bottom of the compressible blunted tip when the crutch is disposed vertically with no weight applied thereto.

REFERENCES:
patent: 1304978 (1919-05-01), Herrold
patent: 1314000 (1919-08-01), Lansky, Jr.
patent: 1383156 (1921-06-01), Sherman
patent: 1431068 (1922-10-01), Waney
patent: 1523703 (1921-01-01), Morfitt
patent: 2230406 (1941-02-01), Johnson
patent: 3646949 (1972-03-01), Streeter

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